Patent Publication Number: US-2021170540-A1

Title: Processing system for processing spectacle lenses

Description:
The present invention relates to a processing system for processing spectacle lenses according to the generic concept of claim  1  or  17 , and to a method for processing spectacle lenses according to claim  22 . 
     Numerous solutions for processing optical or spectacle lenses are known from the prior art. 
     WO 2013/131656 A2 describes a system and a method for processing optical lenses. The processing is carried out by means of various separate processing devices for independent processing of the lenses. Each processing device has its own conveying device, which is controlled by the processing device itself. A transfer device is arranged between each of the processing devices. Lenses are preferably transferred between the processing devices by conveyor belts. The system allows a very flexible processing of lenses which can be adapted to different needs. In certain areas of application, however, a processing system with a smaller footprint is desirable. 
     A device for milling, turning and polishing lenses is known from DE 10 2005 057 725 A1. The device has a movably mounted workpiece spindle so that a lens held by the workpiece spindle can be processed successively with a milling tool and a turning tool and then polished. It is therefore not possible to process several lenses simultaneously in the fixture. 
     EP 1 554 082 B1 describes a process for polishing and signing optical glasses, whereby the polishing and signing steps are carried out in a common production cell and the glasses are handled by the same robot during polishing and signing. The manufacturing cell comprises a polishing station, a washing station and a signing station. In particular, this document relates to a manufacturing process that takes place after a machining by grinding or turning. All handling operations between individual stations as well as, in part, the processing steps themselves are performed by the same robot. This means that only a single handling element is required for all operations within the production cell. The disadvantage is the low throughput. 
     It is an object of the present invention to provide an apparatus and a method, wherein a low space requirement exists, a processing or surface processing of spectacle lenses which is as complete or extensive as possible can be realized and/or a high throughput of processed spectacle lenses per time unit can be achieved. 
     The above object is solved by a processing system according to claim  1  or  17  or by a method according to claim  22 . Advantageous further developments are the subject of the subclaims. 
     A processing system according to the proposal has several processing stations which (can) operate in particular simultaneously and/or independently of each other. Preferred examples of processing stations are a milling station, a turning station, a cleaning station, a polishing station and/or a signing station. The processing system can have any combination of said processing stations, in particular also several stations of the same type, for example two polishing stations. The several processing stations enable extensive or as complete as possible processing or surface processing (surfacing) of spectacle lenses in the processing system. 
     Furthermore, the processing system preferably has a common base frame and/or a common housing or casing for the processing stations. 
     A common base frame on which one or more processing stations are arranged and/or which supports the processing station(s) enables a compact and simple assembly of the processing system. In particular, this also facilitates transport of the processing system from the manufacturer to the installation site as well as installation and commissioning of the processing system at the installation site. 
     The casing or housing is designed in particular in such a way that the processing stations are surrounded by it or are arranged within it. Hereby, the desired operational reliability of the processing system is achieved. 
     Preferably, the processing system has a transport system for transporting the spectacle lenses or transport containers for the spectacle lenses within the processing system. This enables fully automated conveying and processing of the spectacle lenses in the processing system. 
     According to a first aspect of the present invention, the processing system is preferably configured to process different spectacle lenses simultaneously in different processing stations. The processing stations are selected from the group consisting of the milling station, the turning station and the polishing station. In other words, the processing system is preferably designed to simultaneously mill and turn different spectacle lenses, simultaneously mill and polish different spectacle lenses, and/or simultaneously turn and polish different spectacle lenses. This is conducive to high throughput. 
     According to a further aspect that can also be implemented independently, the transport system preferably has transport sections or transport devices that run parallel to one another and are preferably directly adjacent or arranged next to one another. The transport devices are preferably designed as conveyor belts. The arrangement of the transport devices with respect to each other minimizes the footprint or installation area of the processing system and enables a cost-effective and compact design of the processing system. In addition, access to different processing stations, for example for cleaning, inspection, maintenance, repair or replacement of parts, is facilitated. 
     Preferably, the transport devices of the transport system have opposite transport directions and/or the spectacle lenses or transport containers with the spectacle lenses are transported in opposite directions. This is conducive to a compact design of the processing system. 
     Alternatively or additionally, an entrance and an exit or a pick-up and delivery of the transport system are preferably arranged directly adjacent to each other or next to each other and/or on the same side of the processing system. This is conducive to a compact design of the processing system. 
     The processing stations are preferably arranged at least partially below and/or laterally, in particular on sides facing away from each other, of the transport system. This is conducive to a compact design and easy access to the processing stations, for example for inspection, maintenance, servicing or repair. 
     According to a further aspect of the present invention, which can also be implemented independently, the base frame preferably has several, in particular two, subframes, which can be connected to one another and each form a base frame for one or more processing stations. In particular, the subframes are interconnectable on site, i.e. at a location where the processing system is set up or put into operation. This facilitates transport or delivery of the processing system and/or reduces the related costs. In addition, the assembly and/or commissioning of the processing system can be accelerated and/or facilitated in this way. 
     According to a further aspect that can also be implemented independently, the processing system preferably has at least one handling apparatus for the spectacle lenses and/or for tools for processing the spectacle lenses. The handling apparatus is preferably displaceable parallel to the transport system and/or assigned to several processing stations. This is conducive to a compact design or low space requirement of the processing system. In addition, this reduces the costs for the processing system and enables an optimum process sequence or a high throughput. 
     The processing system preferably has several handling apparatuses designed according to the above aspect, in particular one or more (independent) handling apparatuses for the spectacle lenses and at least one handling apparatus for tools for processing the spectacle lenses, in particular polishing tools. This enables efficient processing and high throughput. 
     Some preferred aspects of the handling apparatuses are explained below, wherein the features explained below may also be implemented together in one or more handling apparatuses. This will become clear in particular in the later description with reference to the drawings. 
     The processing system preferably has a handling apparatus which serves to hold spectacle lenses and has a linear movement axis running at least partially above the transport system and/or obliquely to the vertical. Particularly preferably, the handling apparatus has a guide or linear guide which is arranged at least partially above the transport system and/or obliquely to the horizontal and forms or has the movement axis. This is conducive to a compact design of the processing system. 
     The processing system preferably has several independent handling apparatuses, which are in particular arranged at least substantially above the transport system. This is conducive to a compact design of the processing system. 
     Preferably, the processing system has a handling apparatus that is designed for handing over spectacle lenses between the transport system and two processing stations. In particular, the handling apparatus is assigned to several processing stations and is preferably designed for handing over spectacle lenses between the transport system and each of the two processing stations and/or for handing over spectacle lenses between the two processing stations. This is conducive to a compact and cost-effective design of the processing system and a high throughput of spectacle lenses. 
     In particular, the processing system has a handling apparatus with two holding devices on a swivel head for exchanging a spectacle lens at a processing station, in particular a milling and/or turning station. This is conducive to a compact and cost-effective design of the processing system and a high throughput of spectacle lenses. 
     It is preferred that the processing system has a handling apparatus which is designed for the simultaneous exchange of spectacle lenses at two spectacle lens holders or chucks—preferably of workpiece spindles—of a processing station, in particular a polishing station. The handling apparatus is in particular designed to remove two finished, in particular polished, spectacle lenses from the processing station or polishing station simultaneously or in pairs and/or to insert two spectacle lenses to be processed or polished simultaneously or in pairs into the spectacle lens holders or chucks in the processing station or polishing station. This is conducive to a compact and cost-effective design of the processing system and a high throughput of spectacle lenses. 
     The processing system preferably has a handling apparatus with several holding devices for holding spectacle lenses, the holding devices being arranged on different arms and/or movable independently of one another. The arms are preferably arranged parallel to one another and/or movable, in particular linearly. In particular, this enables spectacle lenses to be changed quickly. This is conducive to a compact and cost-effective design of the processing system and a high throughput of spectacle lenses. 
     The processing system preferably has a handling apparatus with two suction cups and two grippers—in particular finger grippers—for holding spectacle lenses. Preferably, the suction cups serve to hold spectacle lenses still to be processed, in particular still to be polished, and the grippers serve to hold spectacle lenses already processed, in particular already polished, preferably only at the edge. This is conducive to a compact and cost-effective design of the processing system and a high throughput of spectacle lenses. 
     Preferably, the processing system has a handling apparatus which is designed for the simultaneous or paired exchange of tools, in particular polishing tools, at two tool holders of a processing station, in particular polishing station. This is conducive to a compact and cost-effective design of the processing system and a high throughput of spectacle lenses. 
     The processing system preferably has a handling apparatus with several holding devices for holding tools, in particular polishing tools, wherein the holding devices are arranged on different arms and/or—in particular two pairs of holding devices—can be moved independently of one another. The arms are preferably arranged parallel to one another and/or movable, in particular linearly. This is conducive to a quick change and therefore a high throughput of spectacle lenses. 
     The processing system preferably has a handling apparatus for exchanging tools, in particular polishing tools, which is assigned to two polishing stations and/or is arranged and/or movable between two processing or polishing stations. This is conducive to a compact and cost-effective design of the processing system and a high throughput of spectacle lenses. 
     Preferably, the processing system has two polishing stations which are assigned a common tool magazine for polishing tools. This is conducive to a compact and cost-effective design of the processing system and a high throughput of spectacle lenses. 
     It is advantageous if the processing system or the handling apparatus has a sensor, in particular a sensing device, to determine whether there are one or more spectacle lenses in a transport container. In this way, errors during processing can be avoided and/or fast processes can be achieved. 
     Preferably, the processing system has an operating apparatus with an input device and a display device. The operating apparatus is preferably used to control or operate the processing system, in particular individual processing stations of the processing system. 
     According to an aspect that can also be implemented independently, the operating apparatus is preferably arranged on an arm, in particular a pivot arm, and can be moved to opposite sides of the processing system and/or in front of different processing stations. This facilitates operation of the processing system and/or the processing stations. 
     According to a further aspect which can also be implemented independently, a control menu can preferably be displayed by means of the display device and the display device is designed to display different control menus, in particular for one of the processing stations in each case, depending on a relative position and/or orientation of the operating apparatus with respect to the processing station(s). This facilitates easier and flexible operation of different processing stations of the processing system and improves operating safety. 
     Preferably, the arm and the operating apparatus are arranged outside the casing or housing of the processing system. In particular, the arm can be at least partially arranged above the housing. The operating apparatus is preferably arranged or arrangeable on an at least substantially vertically extending or lower section of the arm and/or laterally of the casing or housing. This enables convenient operation. 
     The arm can preferably be pivoted about a vertical axis, in particular by at least 180°, particularly preferably by at least substantially 270° or 360°. This allows flexible positioning of the operating apparatus at a desired position with respect to the processing system or the processing stations. 
     The arm preferably has several articulated axes and/or sections that are hingedly connected to one another. This is conducive to flexible positioning of the operating apparatus. 
     Preferably, the operating apparatus is designed for individual control of the respective nearest processing station(s). Alternatively or additionally, the operating apparatus is preferably designed to automatically switch to the nearest processing station or to display a corresponding control menu for the nearest processing station. This facilitates the operation of the processing system or the processing stations. 
     According to another aspect which can also be implemented independently, the present invention relates to a method for processing spectacle lenses in a processing system having several processing stations and a common base frame and/or a common casing or housing for the processing stations. 
     Preferably, the method is carried out in or with a processing system according to any of the aspects described above, and/or the processing system described above is configured to carry out the method described below. 
     In the method, a spectacle lens is processed sequentially in different processing stations of the processing system. 
     According to one aspect of the method, different spectacle lenses are preferably processed simultaneously in different processing stations, while at least one other spectacle lens is further transported and/or moved to a processing station. This is conducive to a high throughput of spectacle lenses. 
     According to a further aspect, which can also be implemented independently, different lenses are preferably milled and turned simultaneously in different processing stations. Alternatively or additionally, different lenses are polished and machined simultaneously in different processing stations, in particular milled and/or process by turning. This is conducive to a high throughput of spectacle lenses. 
     According to a further aspect of the method that can also be realized independently, the spectacle lens is preferably removed from a transport container for processing, processed in different processing stations and then deposited back into the transport container, the transport container being transported further along the processing stations during (before, at the same time and/or after) the processing and/or between the removal and the depositing of the spectacle lens, in particular by means of a transport system. This is conducive to a high throughput of spectacle lenses. 
     According to another aspect that can also be realized independently, a handling apparatus preferably transfers the spectacle lens after milling in a milling station from the milling station preferably directly to a downstream turning station for turning processing. In particular, it is provided that the handling apparatus takes the spectacle lens directly from a spectacle lens holder or a chuck of the milling station or its workpiece spindle, with which the spectacle lens is held during milling, and/or transfers it directly to a spectacle lens holder or a chuck of the turning station or its workpiece spindle, with which the spectacle lens is held during processing in the turning station. Preferably, therefore, no transfer devices, such as grippers or suction cups, are provided which are interposed between the spectacle lens holders or chucks and the handling apparatus. This is conducive to a high throughput of spectacle lenses. 
     It is a particular advantage of the present invention that the shaping processing or machining of the spectacle lenses is not carried out in a single processing station which both mills and turns the spectacle lenses, but that the milling and turning are divided or distributed between two separate processing stations. This results in improvements or optimizations in the processing times or the throughput of the processing system, since the milling of the spectacle lenses is usually completed after a significantly shorter time than the turning processing of the spectacle lenses. Turning processing of a spectacle lens typically requires about two to three times the time required for milling. Therefore, by splitting milling and turning, dead times or downtimes of the processing stations, especially the turning station, can be reduced and a higher throughput can be achieved. 
     In the context of the present invention, the term “turning” with respect to spectacle lenses preferably denotes a machining process of the spectacle lens in which chips are separated from the spectacle lens, in particular in order to produce a desired shape of the spectacle lens. The term “turning” of a spectacle lens particularly refers to a shaping or machining processing, especially preferably a face turning, of the spectacle lens, in particular of a flat side or optical surface of the spectacle lens, and not merely the turning of the spectacle lens about an axis without a (shaping or machining) processing of the spectacle lens. The term “rotating” is preferably used for rotating the spectacle lens without machining. 
     In particular, the terms “turning” and “turning processing” as well as derivatives thereof are used synonymously here and are interchangeable. The term “turning” is here preferably understood to mean face turning. 
     According to a preferred method aspect, immediately after removal of the spectacle lens from a processing station with a handling apparatus, a further spectacle lens already stocked by this handling apparatus is transferred to the same processing station. In this way, dead times or downtimes of the processing station during the exchange of spectacle lenses can be reduced and thus the throughput of spectacle lenses can be increased. 
     Preferably, the same handling apparatus is used to remove the spectacle lens from the transport container, hand it over to a processing station and between two processing stations, remove it from the second processing station and place it back into the (same) transport container. This is conducive to a cost-effective and compact design of the processing system. 
     The above aspects and features, as well as further aspects and features resulting from the claims and the following description, can be realized independently of each other and in any combination. 
    
    
     
       Further advantages, features, characteristics and aspects of the present invention will be apparent from the claims and the following description of a preferred embodiment with reference to the drawing. It shows: 
         FIG. 1  a schematic top view of a processing system according to the proposal; 
         FIG. 2  a perspective depiction of the processing system; 
         FIG. 3  a schematic section of a blocked spectacle lens with a block piece; 
         FIG. 4  a side view of the processing system with a handling apparatus; 
         FIG. 5  a front view of the processing system from  FIG. 4 ; 
         FIG. 6  a perspective depiction of the handling device; 
         FIG. 7  a perspective rear view of the handling device; 
         FIG. 8  a modified side view of the processing system with a further handling apparatus; 
         FIG. 9  a front view of the processing system of  FIG. 8 ; 
         FIG. 10  a perspective depiction of the further handling device; 
         FIG. 11  a side view of the further handling device; 
         FIG. 12  a front view of the processing system with a handling apparatus for tools; 
         FIG. 13  a modified side view of the processing system from  FIG. 12 ; 
         FIG. 14  a perspective view of a tool magazine and a cleaning station; 
         FIG. 15  a perspective view of the tool magazine and the handling apparatus for tools; 
         FIG. 16  a perspective view of the handling apparatus for tools; and 
         FIG. 17  a perspective view of a signing station. 
     
    
    
     In the figures, some of which are not to scale and are only schematic, the same reference signs are used for the same or similar parts, wherein corresponding or comparable properties and advantages can be achieved even if a repeated description is omitted. 
     Overall Concept 
       FIG. 1  shows a very schematic view of a processing system  1  according to the present invention.  FIG. 2  shows the processing system  1  in a simplified perspective view. 
     The processing system  1  is designed for in particular simultaneous processing of several spectacle lenses  2 . 
     In particular, the processing system  1  enables a high throughput of spectacle lenses  2  with a small footprint, i.e. a small required installation area on the floor. 
     The footprint or the required installation area of the processing system  1  is preferably at most 20 m 2 , preferably at most 10 m 2 , in particular about 2 m×3.2 m. 
     Preferably, the processing system  1  is designed to (completely) process more than 60 spectacle lenses  2 , in particular about 80 or more spectacle lenses  2  per hour. One focus of the processing system  1  is in particular on the lowest possible downtimes or dead times of individual processing stations, a high utilization of individual processing stations and/or the lowest possible dwell time of the spectacle lenses  2  in the processing system  1 . 
     Preferably, the processing system  1  is designed for milling, turning, marking or signing, polishing and/or cleaning or washing and/or drying and optionally for measuring, edge processing or edging and/or coating of spectacle lenses  2 . In particular, the milling, turning and polishing refers to the processing of a flat side or optical surface of a spectacle lens  2 . The flat side preferably forms an optical surface or optically effective surface of the spectacle lens  2  and is usually not planar, but somewhat curved, for example spherical or toric, as is also indicated in particular in  FIG. 3 . 
     The processing system  1  is preferably designed for processing blocked spectacle lenses  2  or spectacle lenses  2  that are attached to a block piece  2 A. However, this is not mandatory, the processing system  1  can also be designed for blockless processing of spectacle lenses  2 . 
       FIG. 3  shows a schematic section of a spectacle lens  2  which is blocked, i.e. temporarily fixed, on an associated block piece  2 A by means of a block material  2 B. 
     A protective layer  2 C may be provided between the block material  2 B and the spectacle lens  2 , which may be formed, for example, by a coating such as a varnish or film or the like, or by a (for example adhered) foil. 
     The block piece  2 A is designed in particular for clamping with a defined rotational position for machining the associated spectacle lens  2 . 
     Accordingly, the spectacle lens  2  preferably has a “block side” and a “processing side”. Usually, the block side, i.e. the side or flat side of the spectacle lens  2  to which the block piece  2 A is attached or which faces the block piece  2 A, is already fully machined and/or only the (still unprocessed) processing side is processed. 
     Preferably, the block piece  2 A facilitates the handling and alignment of the spectacle lens  2 . In the following, the block piece  2 A will not be explicitly discussed. In particular, the term “spectacle lens  2 ” also includes spectacle lenses  2  with block pieces  2 A arranged thereon. 
     In the case of blockless processing, the processing system  1  preferably has a system for detecting the position of the spectacle lenses  2  and/or for aligning the spectacle lenses  2 . 
     This may, for example, comprise one or more measuring devices for determining the orientation and/or alignment devices for aligning the spectacle lenses  2  in a specific orientation and/or for maintaining a specific orientation of the spectacle lenses  2 . 
     In particular, such devices may be associated with one or more handling apparatuses and/or one or more processing stations of the processing system  1 . 
     In the following, when describing the arrangement of different components in relation to each other, reference is made in particular to the axes X, Y and Z indicated by arrows in  FIGS. 1 and 2 . 
     The X, Y and Z axes are preferably orthogonal to each other. The X and Y axes are preferably horizontal. The Z axis is preferably vertical or perpendicular. 
     In the following, the X, Y and Z directions are referred to as directions that run parallel to the X, Y and Z axes. The X direction or X axis preferably runs in the central, longitudinal or main axis of the processing system  1  or parallel thereto. 
     The processing system  1  preferably has several processing stations  3 . In particular, the processing system  1  has at least two processing stations  3  of different type or at least two processing stations  3  for performing different processing operations. 
     Preferably, the processing system  1  has a milling station  3 A, a turning station  3 B, a signing station  3 C, a polishing station  3 D and/or a cleaning station  3 E. The stations  3 A-E each constitute a processing station  3 . 
     A processing station  3 , in particular the milling station  3 A, turning station  3 B and/or polishing station  3 D, preferably has a tool for processing the spectacle lens  2 , a workpiece spindle or spindle for the spectacle lens  2  to be processed and/or a tool spindle for the processing tool. In particular, the workpiece spindle has a chuck  2 D for the spectacle lens  2  or the block piece  2 A, as exemplified in  FIG. 17 . Furthermore, a processing station  3  preferably comprises a working space for processing spectacle lenses  2 , in particular wherein the workpiece spindle and/or tool spindle are arranged in the working space. Different processing stations  3  preferably have different workpiece spindles, tool spindles and/or work spaces. 
     The turning station  3 B is preferably vibration-decoupled, for example by means of an air bearing. However, other solutions are also possible here. 
     Preferably, the processing system  1  is designed to perform a complete processing or surface processing, also referred to as surfacing, of the spectacle lenses  2 . A surface processing is in particular a processing of the optical surface(s) or flat side(s) of a spectacle lens  2 . A “complete processing” in the sense of the present invention comprises in particular a milling, turning, polishing and/or cleaning and optionally a signing. Furthermore, a complete processing may optionally comprise a coating and/or an edge processing (edging). However, other solutions are also possible here, in particular not complete or only partial processing in the processing system  1 . 
     In the following, processing stations  3  that perform the same type of processing, for example, each polishing the spectacle lenses  2 , are referred to as processing stations  3  “of the same type”. In contrast, processing stations  3  that perform different types of machining are referred to as processing stations  3  “of different type”. In particular, the milling station  3 A, turning station  3 B, signing station  3 C, polishing station  3 D and cleaning station  3 E are each processing stations  3  of different type. 
     The processing system  1  can also have several processing stations  3  of the same type in each case. In the example shown, the processing system  1  preferably has exactly two polishing stations  3 D. 
     Preferably, the spectacle lens  2  is processed in all processing stations  3  of differently type for different processings. The (different) processings in the processing stations of different type preferably build on each other or preferably form a subsequent processing of the spectacle lens  2 . In particular, the processing sequence is the same for each lens  2 . 
     If the processing system  1  has several processing stations  3  of the same type or several processing stations  3  for the same processing, the spectacle lens  2  is preferably processed in only one of the processing stations  3  of the same type. 
     The processing system  1  preferably has a transport system  4  for transporting the spectacle lenses  2  within the processing system  1 . Preferably, the spectacle lenses  2  are transported in transport containers  5 , which are transported by means of the transport system  4 . 
     The transport containers  5  and/or spectacle lenses  2  are preferably transported (by means of the transport system  4 ) in the X direction. 
     The transport system  4  preferably has several, in particular separate, transport devices  4 A, in the illustrated example two transport devices  4 A. 
     The transport devices  4 A can also be formed by different sections of a common transport system  4 , for example forming a continuous conveyor track. 
     The following explanations on transport devices  4 A preferably also apply accordingly to transport sections. 
     The transport sections or transport devices  4 A preferably run in a straight line at least in areas, in pieces or to the greatest possible extent. 
     The transport devices  4 A are preferably designed as roller conveyor or conveyor belt. 
     The transport devices  4 A are preferably arranged parallel to the X-axis and/or to each other or run in the X-direction. The transport system  4  or the transport devices  4 A preferably serve to transport the transport containers  5  and/or spectacle lenses  2  along and/or past the processing stations  3 . 
     The processing system  1  preferably has one or more handling apparatuses  6 ,  7 ,  8 ,  18  for handling the spectacle lenses  2  and/or for handling tools  15  for processing the spectacle lenses  2 . 
     The term “handling” of a spectacle lens  2  is understood to mean in particular one or more of the following steps: Removal of the spectacle lens  2  from a transport container  5 , transfer of the spectacle lens  2  from the transport container  5  to one or more processing stations  3 , handing over of the spectacle lens  2  to the processing station  3 , in particular insertion into a spectacle lens holder or a chuck  2 D of the processing station  3 , removal of the spectacle lens  2  from a processing station  3 , in particular direct removal of the spectacle lens  2  from a spectacle lens holder or chuck  2 D of the processing station  3 , transfer of the spectacle lens  2  between two processing stations  3  and/or handing over of the spectacle lens  2  from a processing station  3  to a further processing station  3  and/or between two processing stations  3  and/or handing over of the spectacle lens  2  to a transport container  5  or depositing of the spectacle lens  2  in a transport container  5 . Furthermore, the handling of a spectacle lens  2  can comprise changing a relative position of the spectacle lens  2 , for example rotating, tilting, pivoting and/or otherwise aligning the spectacle lens  2 . 
     Handling apparatuses  6 - 8  are omitted in  FIG. 2  for clarity and are shown in detail in further figures. 
     The handling apparatuses  6 - 8  are preferably designed for handling spectacle lenses  2  and/or tools  15  independently of the processing in the processing stations  3  and/or independently of the transport of the transport containers  5  by means of the transport system  4 . Preferably, the different handling apparatuses  6 - 8  are independent of each other and/or do not have common movement axes. 
     Preferably, individual, several or all handling apparatuses  6 - 8  are assigned to several processing stations  3 . 
     The handling apparatuses  6 - 8  are preferably designed either for handling spectacle lenses  2  or for handling tools  15 . However, it is also possible that one or more of the handling apparatuses  6 - 8  is/are designed both for handling spectacle lenses  2  and for handling tools  15 . 
     Preferably, the handling apparatuses  6 - 8  operate independently of each other and/or independently of a processing of the spectacle lenses  2  in the processing stations  3 . In particular, spectacle lenses  2  and/or tools  15  are handled by means of one or more of the handling apparatuses  6 - 8 , in particular moved or transferred between different positions, while a spectacle lens  2  is being processed in a processing station  3  (which is assigned to the handling apparatus  6 - 8 ). In this way, dead times of the processing stations  3 , i.e. periods of time in which no processing of a spectacle lens  2  takes place in a processing station  3 , can be minimized. This increases the throughput of the processing stations  3  or the processing system  1 . 
     The handling apparatuses  6 - 8  are preferably positioned as close as possible to the transport system  4  and/or the respective assigned processing stations  3  in order to realize short handling times and/or short travel distances. 
     Preferably, some, several or all of the handling apparatuses  6 - 8 ,  18  are designed to detect transport containers  5  and/or spectacle lenses  2  and/or to determine or detect the position thereof, for example by means of a detection device  4 E described later and/or one or more other or further position detection devices. 
     The processing system  1  preferably has a base frame  9  which supports the processing stations  3  and/or the transport system  4  or on which the processing stations  3  and/or the transport system  4  are arranged. The base frame  9  preferably comprises or is formed by a metal frame. 
     The processing system  1  preferably has a housing or casing  10 . The processing stations  3  and/or the transport system  4  are preferably arranged within the casing  10  or surrounded by the casing  10 . In particular, the casing  10  forms an outer enclosure or boundary of the processing system  1 . 
     The casing  10  may be attached to or connected to the base frame  9 . However, it is also possible for the casing  10  to be separate from the base frame  9 , for example by being anchored in the ground without contact with the base frame  9 . 
     In  FIGS. 4 and 8 , different embodiments of the casing  10  are indicated. In particular, it is possible that parts of the processing system  1  are arranged outside the casing  10 . In the example shown in  FIG. 8 , the switch cabinet  11 A is arranged outside the casing  10 . 
     The casing  10  preferably has a plurality of access points, such as openings, flaps, doors, windows and/or other devices, which allow access to the space surrounded or limited by the casing  10 . In particular, this allows access to individual processing stations  3 , to the transport system  4  and/or to the switch cabinet  11 A, for example for inspection, maintenance, servicing and/or repair. The accesses are preferably openable and/or closable. 
     In particular, in embodiments deviating from the illustrative example, access to parts of the processing system  1  other than the processing stations  3  can also be enabled through accesses of the casing  10 . For example, the transport system  4  can be arranged in the vicinity of the casing  10  in such a way that direct access to the transport system  4  is possible through accesses of the casing, e.g. if the transport system  4  is arranged at the outer edge of the processing system  1  or at least partially in the vicinity of the casing and/or has only one transport device  4 A. 
     The processing system  1  preferably has an integrated or common control system for the processing stations  3 , the transport system  4  and/or the handling apparatuses  6 - 8 . 
     The control system is preferably arranged or accommodated in one or more switch cabinets  11 A. The control system or the switch cabinet  11 A is preferably arranged on a front face of the processing system  1 , the transport system  4  and/or the casing  10  and/or on a transverse side of the base frame  9  or on or at the base frame  9 . 
     The switch cabinet  11 A may be movable so that access to the processing system  1  or parts thereof, such as the transport system  4  and/or one or more processing stations  3 , is enabled or facilitated, for example by moving, rotating, folding or pivoting the switch cabinet  11 A. 
     The control system may comprise or be formed by one or more separate or independently operating control devices  11  for controlling one or more components of the processing system  1 . This will be discussed in more detail later. 
     The processing system  1  preferably has an operating apparatus  12 . The operating apparatus  12  preferably has a display device  12 A and/or an input device  12 B. The display device  12 A and input device  12 B can in particular also be formed by the same element, for example a touch screen or a touch-sensitive display. 
     The operating apparatus  12  can preferably be used to control or operate different processing stations  3  of the processing system  1  individually or independently of one another. This will be discussed in more detail later. 
     It is advantageous if the operating apparatus  12  is arranged on an arm  13 , in particular at the end thereof. 
     The processing system  1  or the arm  13  is preferably designed in such a way that the operating apparatus  12  can be used flexibly or can be positioned around the processing system  1  or optionally on different sides or in front of different processing stations  3 . This will be discussed in more detail later. 
     The processing system  1  preferably has a tool magazine  14 . The tool magazine  14  can be assigned to one or more processing stations  3  or have or stock tools  15  for one or more processing stations  3 . 
     Particularly preferably, the tool magazine  14  is assigned to one or two polishing stations  3 D and/or arranged between two polishing stations  3 D. In this case, the tools  15  are in particular polishing tools or polishing heads. 
     In principle, however, the processing system  1  can also have one or more tool magazines  14  for other tools  15 , for example milling and/or turning tools. 
     Preferably, the cleaning station  3 E is associated with one or more polishing stations  3 D and/or is designed for cleaning spectacle lenses  2  and/or tools  15 , in particular polishing tools. 
     The cleaning station  3 E is preferably arranged next to one or more polishing stations  3 D, in particular between two polishing stations  3 D. 
     The cleaning station  3 E is preferably designed for washing and/or drying spectacle lenses  2  and/or tools  15 . This will be discussed in more detail later. 
     Preferably, the tool magazine  14  and the cleaning station  3 E form a common unit or the tool magazine  14  is integrated into the cleaning station  3 E. 
     The processing system  1  preferably has a supply system  20  for supplying one or more processing stations  3  with operating fluids. The arrangement or position of the supply system  20  is schematically indicated in  FIG. 1 . The supply system  20  is not shown in the further figures. 
     The supply system  20  is preferably located near the entrance E and/or exit A, near the polishing station  3 D, on the polishing side  1 B and/or on the side of the processing system  1  opposite the switch cabinet  11 A. 
     Preferably, the supply system  20  is arranged laterally offset from the transport system  4  and/or at least partially below the transport system  4 . 
     In particular, the supply system  20  has reservoirs for different operating fluids of the processing stations  3 , in particular the polishing stations  3 D, for example coolant, polishing agent, cleaning fluid or the like. 
     The supply system  20  preferably has one or more lines  20 A for supplying operating fluids to the processing stations  3  and/or for discharging (used or consumed) operating fluids or waste, waste water or the like from the processing stations  3 . Accordingly, the supply system  20  may also have collection containers for operating fluids, waste, waste water or the like discharged from the processing stations. 
     The transport system  4  or the processing system  1  is preferably connected to an external transfer system  16  or a transfer system  16  separate from the processing system  1 , via which the spectacle lenses  2  or transport containers  5  with the spectacle lenses  2  are or can be conveyed to the processing system  1  or transport system  4  and/or are or can be conveyed away from the processing system  1 . 
     Divisibility 
     The base frame  9  preferably has several, in particular two, subframes  9 A, each of which forms a base frame for one or more processing stations  3  and in particular a transport device  4 A. The subframes  9 A can preferably be connected to each other to form the base frame  9  or can be fastened to each other. 
     In particular, the subframes  9 A can be connected to each other on site, i.e. at the assembly location of the processing system  1 , easily or with little effort and/or in a short time to form the base frame  9 . 
     According to a preferred aspect, the processing system  1  is divisible into two parts  1 A,  1 B or is or can be assembled from two parts  1 A,  1 B. 
     Optionally, each of the two parts  1 A,  1 B is functional separately and/or independently of the respective other part  1 A,  1 B. In particular, the parts  1 A,  1 B are then each designed in such a way that they form an independently functional processing system  1  for the same or different machining operations. 
     In the illustrative example, the processing system  1  is divided into two parts  1 A,  1 B, preferably a processing side  1 A and a polishing side  1 B. 
     Preferably, the two sides or parts  1 A,  1 B of the processing system  1  each form a ready-assembled unit with a transport device  4 A, one or more processing stations  3 , one or more handling apparatuses  6 - 8  and/or a control system or switch cabinet  11 A. In particular, the processing side  1 A has the milling station  3 A and the turning station  3 B and optionally the signing station  3 C. However, the signing station  3 C can also be integrated into the polishing side  1 B. In the example shown, the polishing side  1 B has two preferably identically designed polishing stations  3 D. Furthermore, the polishing side  1 B preferably has the tool magazine  14  and/or the cleaning station  3 E. 
     The processing side  1 A may form a processing system  1  for milling, turning and/or signing spectacle lenses  2 . 
     The polishing side  1 B may form a processing system  1  for polishing, cleaning and/or signing spectacle lenses  2 . 
     Preferred Procedure 
     Preferably, a method for processing spectacle lenses  2  comprises one or more of the following steps. In particular, the processing system  1  is designed to perform these steps. 
     The method is described below primarily with reference to a single spectacle lens  2 . Preferably, in the method, several spectacle lenses  2  are processed simultaneously in different processing stations  3 . Preferably, different spectacle lenses  2  pass through the same processing stations  3  and/or all spectacle lenses  2  pass through the processing stations  3  in the same order. 
     The steps explained below are intended to provide an overview of the method. The method may in particular have further steps which will be described later. In particular, the processing system  1  is also designed to perform these further steps. 
     Preferably, the spectacle lens  2  is first handed over or conveyed to the processing system  1  or transport system  4 , in particular by means of the external transfer system  16  and/or in transport containers  5 . 
     Preferably, several lenses  2  are processed and/or transported and/or handled simultaneously. 
     The spectacle lens  2  is preferably processed successively in several, in particular different, processing stations  3 . Preferably, a transport of the transport container  5  assigned to the spectacle lens  2  by the transport system  4  and a handling of the spectacle lens  2  by one or more handling apparatuses  6 ,  7  take place in parallel or simultaneously. 
     The spectacle lens  2  is preferably first processed or milled in the milling station  3 A. For this purpose, the transport container  5  with the spectacle lens  2  is preferably transported in front of the milling station  3 A by means of the transport system  4  and the spectacle lens  2  is removed from the transport container  5  by means of the handling apparatus  6  and handed over to the milling station  3 A. 
     After processing in the milling station  3 A or milling, the spectacle lens  2  is preferably removed from the milling station  3 A with the same handling apparatus  6  and transferred to a further processing station  3 , in particular to the turning station  3 B. Subsequently, a turning of the spectacle lens  2  preferably takes place in the turning station  3 B. After the turning, the spectacle lens  2  is removed from the turning station  3 B, preferably with the same handling apparatus  6 . In particular, the spectacle lens  2  is not transferred back to the transport system  4  or not deposited in the transport container  5  between the milling and the turning. 
     Subsequently, the spectacle lens  2  is preferably deposited again, in particular by means of the same handling apparatus  6 , in a transport container  5 , particularly preferably in the same transport container  5  from which it was previously removed. 
     The transport container  5  was preferably transported further in the meantime or transported from the milling station  3 A to or in front of the turning station  3 B. The further transport preferably takes place during the processing of the spectacle lens  2  and/or the handling of the spectacle lens  2  by means of the handling apparatus  6 . 
     It is preferred if several spectacle lenses  2  are handled simultaneously by means of the handling apparatus  6 . In particular, it is preferred if the handling apparatus  6 , during the processing of a first spectacle lens  2  in the milling station  3 A, already removes a further spectacle lens  2  from the same or a further transport container  5  and preferably already holds or stocks it for subsequent processing in the milling station  3 A. When the processing of the first spectacle lens  2  in the milling station  3 A is completed, the handling apparatus  6  can then remove this spectacle lens  2  from the milling station  3 A and immediately thereafter transfer the stocked, not yet milled further spectacle lens  2  to the processing station  3  or milling station  3 A. 
     Preferably, the first fully milled spectacle lens  2  is then handed over to the turning station  3 B as described. It is also possible that after the first spectacle lens  2  has been milled, it is first handed over to the turning station  3 B and only then the (already stocked) further lens  2  is handed over to the milling station  3 A. 
     If a spectacle lens  2  is already being processed in the turning station  3 B, it is preferable to wait until the processing is finished to first remove the spectacle lens  2  from the turning station  3 B and only then transfer the next spectacle lens  2  to the turning station  3 B. 
     Turning and/or milling is preferably performed as described in DE 10 2005 057 725 A1. 
     Preferably, a spectacle lens holder or workpiece spindle of the milling station  3 A and/or turning station  3 B is aligned horizontally and/or the spectacle lens  2  is rotated about a horizontally extending rotation axis during turning or milling. 
     Preferably, marking or signing of the spectacle lens  2  is carried out after the milling and/or turning of the spectacle lens  2 . However, marking or signing can also be carried out at a later time, in particular after polishing of the spectacle lens  2 . 
     The transport container  5  with the spectacle lens  2  is preferably transported further after the turning of the spectacle lens  2 , in particular transported to the signing station  3 C. 
     Preferably, the spectacle lens  2  is removed from the transport container  5  by means of a handling apparatus  18  of the signing station  3 C, then signed or marked, in particular with a laser  21  or laser beam, and handed over back to the transport container  5  or deposited therein. 
     Preferably, the transport container  5  with the spectacle lens  2  is subsequently transported further and/or transferred from the processing side  1 A to the polishing side  1 B. In particular, the transport container  5  is transferred to a further or the second transport device  4 A of the transport system  4 , preferably with a changing device  4 B arranged in particular at the end of the transport system  4  or the first transport device  4 A. 
     Preferably, the spectacle lens  2  is polished as a further or next processing step. For this purpose, the processing system  1  preferably has two polishing stations  3 D, in particular of the same type or identical design. This can increase the throughput of the processing system  1 , since the polishing process usually takes considerably longer than the turning and/or milling of the spectacle lens  2 . 
     The processing system  1  preferably has a further handling apparatus  7  and/or one that is separate from and/or operates independently of the aforementioned handling apparatus  6  for handling spectacle lenses  2 . The handling apparatus  7  is preferably assigned to several processing stations  3 , in particular the two polishing stations  3 D. 
     Preferably, the handling apparatus  7  removes the spectacle lens  2  from the transport container  5  and hands it over to one of the polishing stations  3 D. The spectacle lens  2  is preferably processed or polished in only one of the two polishing stations  3 D. 
     Preferably, the polishing station  3 D or each of the polishing stations  3 D is designed for simultaneous or parallel polishing of two spectacle lenses  2 . 
     The handling apparatus  7  is preferably designed for handling two spectacle lenses  2  simultaneously or in pairs. Preferably, the handling apparatus  7  is used to remove two spectacle lenses  2  simultaneously or in pairs from the transport container  5  and/or hand them over to the polishing station  3 D. Preferably, by means of the handling apparatus  7 , two spectacle lenses  2  are removed simultaneously or in pairs from the polishing station  3 D and/or handed over to the transport container  5 . 
     Preferably, by means of the handling apparatus  7 , two spectacle lenses  2  to be polished are removed simultaneously from the transport container  5 , then two already polished spectacle lenses  2  are removed from the polishing station  3 D and immediately thereafter the two spectacle lenses  2  still to be polished are transferred to the polishing station  3 D and only then the two already polished spectacle lenses  2  are deposited again in a or the original transport container  5 . 
     Preferably, the handling apparatus  7  moves, in particular parallel to the transport system  4 , while a processing of spectacle lenses  2  takes place in a polishing station  3 D. In particular, spectacle lenses  2  are transferred to and/or removed from one of the polishing stations  3 D, while further spectacle lenses  2  are polished in the other polishing station  3 D. 
     Preferably, a change of polishing tools takes place simultaneously with the handing over and/or removal or a change of the spectacle lenses  2  in the polishing station  3 D. The handling apparatus  8  is preferably provided for changing the polishing tools. 
     Preferably, polishing is performed as described in US 2014/0038494 A1 or the polishing station  3 D is designed as set forth in this paper. 
     After polishing, the spectacle lenses  2  are preferably cleaned, in particular washed and/or dried. This is done in particular while further spectacle lenses  2  are being polished in the polishing station(s)  3 D. 
     The previously described signing of the spectacle lenses  2  can also be carried out after the polishing and/or cleaning of the spectacle lenses  2 . 
     Preferably, the transport containers  5  or spectacle lenses  2  are finally transferred back to the external transfer system  16 . 
     In summary, in the processing system  1  preferably several spectacle lenses  2  are processed simultaneously in different processing stations  3 , in particular milled, processed by turning, signed and polished, preferably in one of several polishing stations  3 D. Preferably, the transport of the transport containers  5  is performed by the transport system  4 , while the spectacle lenses  2  are handled by means of a plurality of handling apparatuses  6 ,  7 ,  18  and/or processed in the processing stations  3 . 
     Transport System 
     Preferably, the transport system  4  is arranged at least substantially in the center or central axis of the processing system  1  and/or the processing stations  3  or at least parts thereof are arranged on different, in particular mutually remote, sides of the transport system  4 . 
     The transport devices  4 A are preferably arranged directly adjacent to each other, in particular next to each other. 
     The processing stations  3  preferably form two rows, in particular with the transport system  4  and in particular the two transport devices  4 A being arranged between the rows. According to another embodiment, however, it can also be provided that the processing stations  3  are arranged between the transport devices  4 A and/or the transport devices  4 A are each arranged at the edge of the processing system  1 . 
     Preferably, each of the parts  1 A,  1 B has a transport device  4 A. 
     The processing stations  3  are preferably arranged at least partially laterally of and/or below the transport system  4 . 
     Preferably, the transport devices  4 A are at least substantially of the same type or identical in design. The explanations with respect to one of the transport devices  4 A preferably also apply to the other transport device  4 A. 
     As already mentioned at the beginning, the transport devices  4 A can also be formed merely by different sections of a transport system  4 . 
     The transport devices  4 A are preferably designed as linear conveyors, particularly preferably as conveyor belts, and/or are arranged parallel to each other. 
     The transport system  4  or the transport devices  4  can be clocked. 
     The transport devices  4 A preferably have opposite or antiparallel transport directions R 1 , R 2 . The transport directions R 1  and/or R 2  preferably run parallel to the X axis and/or horizontally. 
     It is also possible that one or more transport devices  4 A have multiple transport directions or are designed to transport containers  5  or spectacle lenses  2  in opposite directions or back and forth. 
     The transport containers  5  are preferably designed as boxes. In particular, the box is open on the upper side so that handling of the spectacle lenses  2  from above is made possible. 
     Preferably, each transport container  5  is assigned to a spectacle lens  2  or a pair of spectacle lenses  2  or vice versa. After processing in a processing station  3 , the spectacle lenses  2  are preferably deposited again in the same transport container  5  from which they were previously removed for processing. 
     Preferably, the transport containers  5  have an identifier for the transport container  5  or the spectacle lenses  2  transported with the transport container  5 . The identifier can be designed as a barcode or RFID chip, for example. 
     Alternatively or additionally, the spectacle lenses  2  and/or block pieces  2 A may each be provided with an identifier. 
     Preferably, the identifier can be used to retrieve information about the spectacle lenses  2  or about the processing of the spectacle lenses  2  and/or the identifier has such information. 
     The processing system  1  or transport system  4  preferably has one or more readers or detection devices  4 E for detecting, in particular reading out, the identifiers, in particular of the transport containers  5 . The detection devices  4 E are preferably arranged laterally on the transport devices  4 A, in particular laterally on a transport belt or conveyor belt. 
     Alternatively or additionally, one or more of the handling apparatuses  6 ,  7 ,  18  have a detection device  4 E. In the example shown, the handling apparatus  7  for spectacle lenses  2  of the polishing side  1 B in particular has a detection device  4 E. 
     The processing system  1  or transport system  4  preferably has a pick-up and a delivery or an entrance E and an exit A for spectacle lenses  2  or transport containers  5 . 
     The term “entrance” refers in particular to the point at which the spectacle lenses  2  or transport containers  5  enter the processing system  1  or are handed over (by the external transfer system  16 ) to the processing system  1 . Correspondingly, the term “exit” designates the point at which the spectacle lenses  2  or transport containers  5  leave the processing system  1  or transport system  4  again and/or are handed over to the external transfer system  16 . 
     The entrance E and exit A of the processing system  1  or transport system  4  are preferably arranged directly adjacent to each other or next to each other and/or on the same side of the processing system  1 . 
     Preferably, the processing system  1  or transport system has a plate  10 A, which is arranged at the entrance E and/or exit A or forms the entrance E and/or exit A. Preferably, the plate  10 A has two openings through which the spectacle lenses  2  or transport containers  5  enter or leave the processing system  1  or transport system  4 . 
     In particular, the plate  10 A may form a part of the casing  10 . However, it is also possible that the plate  10 A is arranged within the casing  10 . 
     In particular, the transport system  4  is designed in such a way that the transport containers  5  or spectacle lenses  2  enter and leave the processing system  1  on the same side of the processing system  1  or do not completely pass through the processing system  1  in one direction or along one axis. 
     The transport system  4  preferably has a changing device  4 B by means of which the spectacle lenses  2  or transport containers  5  can change between transport devices  4 A or can change or be transported from one transport device  4 A to another transport device  4 A. Preferably, the changing device  4 B is arranged in an end region of the transport system  4  or transport devices  4 A and/or adjacent to or shortly before the switch cabinets  11 A. In particular, the changing device  4 B is arranged at the end of the transport system  4  or the transport device  4 A and/or opposite the entrance E and/or exit A. 
     Preferably, the changing device  4 B has a transport direction R 3  or the transport containers  5  are conveyed by means of the changing device  4 B in the transport direction R 3 . The transport direction R 3  preferably runs transversely, in particular perpendicularly, to the first and/or second transport direction R 1 , R 2 . Preferably, the transport direction R 3  runs in the Y-direction. 
     The changing device  4 B is preferably designed for transverse transport of the transport containers  5  or spectacle lenses  2 . 
     The changing device  4 B can also be designed to rotate the transport containers  5 . For this purpose, the changing device  4 B can, for example, have two cam elements, so that a U-shaped transport system  4  is formed by the transport devices  4 A and the changing device  4 B. However, the changing device  4 B can alternatively or additionally be designed to turn the transport containers  5  on the spot and/or to rotate them about a rotation axis. 
     Furthermore, the changing device  4 B can also be formed by or have a robot arm or the like, wherein the robot arm is designed to grip a transport container  5  and/or spectacle lenses  2  and transfer them from one transport device  4 A to the other transport device  4 A. If necessary, the transport container  5  can also be rotated during this. 
     By rotating the transport containers  5  by means of the changing device  4 B, the relative orientation of the transport containers  5  with respect to the respective local transport direction R 1 , R 2 , R 3  is maintained. 
     In particular, the spectacle lenses  2  or transport containers  5  are first handed over to the first transport device  4 A at the entrance E, transported within the processing system  1  in the first transport direction R 1 , preferably in a straight line or linearly, handed over to the other or second transport device  4 A by means of the changing device  4 B, transported in the second transport direction R 2 , opposite to the first transport direction R 1 , by means of the further transport device  4 A and, preferably at the exit A, finally handed over back to the external transfer system  16  or another device. 
     According to one variant, one or more further changing devices  4 B can also be provided, in particular in the area of the entrance E and/or exit A and/or on the side of the transport system  4  opposite the first changing device  4 B, but also at any other positions. 
     The transport system  4  can also have more than two and/or one or more further transport devices  4 A, in particular in order to enable a circulation of spectacle lenses  2  and/or transport containers  5  and/or an overtaking of spectacle lenses  2  and/or transport containers  5 . The further transport device(s)  4 A is/are preferably arranged parallel to the transport devices  4 A shown in the figures and/or has/have transport directions parallel to the transport directions R 1  and/or R 2 . The further transport devices  4 A are preferably arranged immediately adjacent to the transport devices  4 A shown in the figures, for example above, below, next to and/or between them. In particular, the transport devices  4 A form a circuit for the spectacle lenses  2  and/or transport containers  5 . For this purpose, the transport system  4  and/or the further transport devices  4 A can in particular have one or more (additional) changing devices  4 B. 
     As an alternative or in addition to the formation of a circuit, it can be provided to stop the transport containers  5  or spectacle lenses  2  by means of the further transport device  4 A as required and/or to move or transport them forward and/or backward, in particular along and/or against the transport direction R 1  and/or R 2 . Preferably, the same (further) transport device  4 A is designed for stopping and/or for moving or transporting the transport containers  5  or spectacle lenses  2  in two mutually opposite directions. Several connections or (changing) devices can be provided for connecting the further transport device(s)  4 A, so that at different positions transport containers  5  or spectacle lenses  2  can change between the further transport device  4 A and a transport device  4 A which transports the spectacle lenses  2  along the processing stations  3 , and/or overtaking of spectacle lenses  2  or transport containers  5  is made possible. 
     An overtaking of spectacle lenses  2  or transport containers  5  can alternatively or additionally also be enabled or realized via a parking or waiting area for the transport containers  5 . The waiting area can have or be formed by a (stationary) transport device  4 A, in particular a stationary conveyor belt, or another device which is suitable for temporarily receiving or temporarily holding a transport container  5 , such as a shelf or the like. Preferably, the parking or waiting area is arranged between the transport devices  4 A. The parking or waiting area is preferably connected to the transport devices  4 A via a changing device  4 B, so that the transport containers  5  can be changed or transferred between the storage or waiting area and the transport devices  4 A by means of the changing device  4 B. 
     In particular, the further transport device(s)  4 A and/or the waiting area make it possible that transport containers  5  or spectacle lenses  2  are conveyed past one or more processing stations  3 , i.e. to omit individual processing stations  3 , and/or spectacle lenses  2  are not processed in all processing stations  3  or only in selected processing stations  3 . 
     Preferably, the transport system  4  is only provided or designed for transporting the transport containers  5 . The handling of the spectacle lenses  2  itself, in particular the handing over of the spectacle lenses  2  to the processing stations  3  and the removal of the spectacle lenses  2  from the processing stations  3 , is preferably performed by means of the handling apparatuses  6 ,  7 ,  18 . 
     The handling apparatuses  6 ,  7 ,  18  preferably operate independently of the transport system  4  and/or are controlled separately. 
     For processing, the spectacle lenses  2  are preferably removed from the transport system  4  or transport container  5  by means of one of the handling apparatuses  6 ,  7 ,  18  and/or placed back into the same transport container  5  after processing or handed over to the transport system  4  or transport container  5 . 
     In particular, the transport container  5  is further transported by means of the transport system  4 , while spectacle lenses  2  removed from the transport container  5  are processed in one or more processing stations  3  and/or handled by means of the handling apparatus  6 ,  7 . 
     The transport system  4  preferably has one or more stoppers  4 C. 
     The stopper  4 C is preferably designed to stop or halt transport containers  5  or to (temporarily) prevent further transport of transport containers  5 . 
     In particular, the stopper  4 C is formed by a plate or a slider that can be moved perpendicularly to the transport device  4 A or the conveyor belt, in particular in the Z-direction. 
     The stopper  4 C is preferably assigned to a processing station  3  and/or positioned near or in front of the processing station  3  in such a way that the spectacle lens  2  can be removed from the transport container  5  by means of the handling apparatus  6 ,  7 ,  18  and/or handed over to the processing station  3 . 
     In particular, a stopper  4 C can (additionally) be arranged at the entrance E and/or at the exit A and/or the stopper  4 C can be assigned to different transport directions. This is particularly advantageous if the transport device  4 A, to which the stopper  4 C is assigned, is designed to transport containers  5  or spectacle lenses  2  in opposite directions or back and forth. 
     The processing system  1  or transport system  4  preferably has one or more storage devices  4 D for storing transport containers  5  or spectacle lenses  2 . 
     The storage device  4 D is preferably designed to temporarily hold or temporarily store one or more transport containers  5 . In particular, the transport containers  5  can be stacked in the storage device  4 D or arranged vertically or one above the other in the Z direction. 
     The storage device  4 D is preferably arranged in the vicinity of the entrance E and/or exit A of the transport system  4 . Preferably, the storage device  4 D is arranged at an end of the transport system  4  opposite the changing device  4 B. 
     According to a preferred embodiment, each of the transport devices  4 A comprises a storage device  4 D, in particular in the vicinity of the entrance E and/or exit A. 
     Alternatively or additionally, the transport device  4 A can have several storage devices  4 D, for example in the vicinity of the changing device  4 B and/or between two processing stations  3  (in each case). 
     The external transfer system  16  is preferably formed by one or more conveyor belts. 
     The conveying direction of the transfer system  16  or the conveyor belt preferably runs in the Y-direction and/or transversely, in particular perpendicularly, to the transport devices  4 A and/or the transport directions R 1 , R 2 . 
     In  FIG. 1 , the transfer system  16  is indicated as a continuous conveyor belt from which two sections branch off transversely and connect the transfer system  16  to the transport system  4  or its entrance E and exit A. In this embodiment, preferably a transverse conveying of the transport containers  5  to the entrance E and/or from the exit A takes place. The processing system  1  or the transport system  4  is preferably arranged transversely, in particular perpendicularly, to the transfer system  16  and/or to a main conveying direction H of the transfer system  16 . In particular, the transport direction R 1 , R 2  runs transversely, in particular perpendicularly, to the main conveying direction H of the transfer system  16 . 
     The orientation of the transport containers  5  with respect to the transfer system  16  or the main conveying direction H may be maintained or may change during the transition between the transfer system  16  and the transport system  4 . 
     According to one example, the transfer system  16  or processing system  1  has curve elements at each of the entrance E and exit A, via which sections of the transfer system  16  running transversely or at right angles to the main conveying direction H are connected to a conveyor belt of the transfer system  16  that conveys the transport containers  5  in the main conveying direction H. In this case, the transport containers  5  are conveyed in a curve before the entrance E and are also conveyed in a curve after the exit A, so that the transport system  4  and the transfer system  16  form a continuous conveyor belt with several bends or curves. As the case may be, in this embodiment it is not possible to transport the transport containers  5  past the processing system  1  by means of the transfer system  16 . In this embodiment, the orientation of the transport containers  5  with respect to the main conveying direction H changes at the transition between the transfer system  16  and the transport system  4 . However, with respect to the respective “local” conveying direction, i.e. the main direction H in the transfer system  16  and the conveying direction R 1 , R 2  in the transport system  4 , the orientation of the transport containers  5  is maintained. This can also be achieved by rotating the transport containers  5  before they enter the processing system  1  or after they leave the processing system  1 , without providing cam elements. 
     However, solutions are also possible in which the transport containers  5  are not rotated or the orientation of the transport containers  5  relative to the transfer system  16  or the main conveying direction H is maintained during the transition between the transfer system  16  and the processing system  1  or transport system  4 . 
     The processing system  1  or transport system  4  and/or the handling apparatuses  6 ,  7 ,  18  preferably have a sensor  4 F with which it can be determined whether there are one or more spectacle lenses  2  in a transport container  5 . 
     Particularly preferably, the sensor  4 F is designed as a sensing device. In particular, the sensor  4 F is arranged laterally on the transport device  4 A in such a way that a feeler of the sensor  4 F can be moved vertically or in the Z direction and/or is arranged above the transport containers  5  or spectacle lenses  2  transported with the transport device  4 . Preferably, by moving the feeler, in particular in the Z direction, it can be determined whether there are one or two spectacle lenses  2  in a transport container  5 . 
     Preferably, the sensor  4 F has several, in particular two, feelers arranged next to each other. 
     The processing system  1  or transport system  4  and/or the handling apparatuses  6 ,  7 ,  18  can have several sensors  4 F. For example, several or all processing stations  3  can each be assigned a sensor  4 F. 
     In an embodiment not shown, the transport system  4  or the transport device  4 A can be of interchangeable and/or modular design or form a module or an interchangeable unit. The transport system  4  or the transport device  4 A is preferably designed in such a way that it can be moved and/or exchanged out of the processing system  1  at least substantially completely or as a unit. In particular, this is advantageous in order to enable or facilitate repair, maintenance, inspection, servicing and/or access to the transport device  4 A and/or the transport system  4 . 
     Handling Apparatus Processing Side 
     While the handling apparatuses  6 - 8 ,  18  are only indicated very schematically in  FIG. 1  for the sake of clarity and have been omitted in  FIG. 2 ,  FIGS. 4 and 5  show the processing system  1  with the handling apparatus  6  in different views.  FIGS. 6 and 7  show the handling apparatus  6  in different views. 
     The handling apparatus  6  is preferably designed for handling spectacle lenses  2 , in particular for handling several spectacle lenses  2  simultaneously, especially preferably two spectacle lenses  2 . 
     Preferably, the handling apparatus  6  is assigned to several processing stations  3 , in particular the milling station  3 A and the turning station  3 B, and/or is arranged on the processing side  1 A. 
     The handling apparatus  6  is preferably designed for handing over spectacle lenses  2  between the transport system  4  and several processing stations  3 . In particular, the handling apparatus  6  is designed for the direct handing over of spectacle lenses  2  to a workpiece spindle or a chuck  2 D of the workpiece spindle of the milling station  3 A and/or the turning station  3 B. 
     The handling apparatus  6  is preferably movable along or parallel to the transport system  4 , and/or parallel to the X-axis. 
     The handling apparatus  6  is preferably arranged at least partially above the transport system  4  and/or designed for handling the spectacle lenses  2  from above the transport system  4  and/or the transport devices  4 A. This is conducive to a compact design. 
     The handling apparatus  6  or at least parts thereof are preferably arranged vertically above the transport system  4  or the transport device  4 A. In particular, this is conducive to a compact design of the processing system  1 . 
     The handling apparatus  6  preferably has several movement axes B 1 , B 2 , B 3  and/or is movable or displaceable along the movement axes B 1 -B 3 . Preferably, the movement axis B 1 , the movement axis B 2  and/or the movement axis B 3  is a linear movement axis. 
     The movement axis B 1  preferably runs at least essentially horizontally and/or parallel to the X axis. 
     Particularly preferably, the movement axis B 1  runs parallel to the transport device  4 A or transport direction R 1 , R 2 . 
     The movement axis B 1  is preferably arranged vertically above or above the transport system  4 . 
     The movement axis B 2  preferably runs transversely, in particular orthogonally, to the movement axis B 1 . Preferably, the movement axis B 2  runs at an angle to the vertical or Z-direction and/or at least partially above the transport system  4 . 
     The movement axis B 3  preferably runs vertically and/or perpendicularly and/or in the Z direction. 
     The handling apparatus  6  preferably has a rail or guide  6 A or is arranged thereon. The handling apparatus  6  is preferably movable along the guide  6 A or parallel to the guide  6 A. 
     In particular, the guide  6 A is designed as a linear guide and/or arranged parallel to the transport device  4 A or transport direction R 1 , R 2  and/or X axis. 
     The guide  6 A is preferably arranged above, in particular vertically or centrally above, the transport device  4 A or the transport system  4 . 
     Preferably, the guide  6 A has or forms the movement axis B 1 . 
     For better differentiation, the guide  6 A is also referred to as longitudinal guide  6 A in the following. 
     The handling apparatus  6  preferably has a guide  6 B, hereinafter also referred to as transverse guide  6 B for better differentiation. 
     The longitudinal guide  6 A and/or transverse guide  6 B are preferably formed by or have a guide rail and/or a carriage. The transverse guide  6 B is preferably slidably mounted on the longitudinal guide  6 A and/or movable or displaceable along the longitudinal guide  6 A. 
     The transverse guide  6 B is preferably arranged transversely, in particular orthogonally, to the longitudinal guide  6 A and/or movement axis B 1 . 
     Preferably, the transverse guide  6 B is arranged at least partially above the transport system  4 . 
     The transverse guide  6 B preferably runs at an angle to the vertical or Z axis and/or perpendicularly to the X axis. 
     Preferably, the transverse guide  6 B has or forms the movement axis B 2 . 
     The handling apparatus  6  preferably has an adjusting device  6 C. 
     The adjusting device  6 C is preferably movable or adjustable in the Z direction or along the movement axis B 3 . Preferably, the adjusting device  6 C forms or has the movement axis B 3 . 
     The adjusting device  6 C is preferably slidably mounted on the transverse guide  6 B and/or movable or displaceable along the transverse guide  6 B and/or movement axis B 2 . 
     The handling apparatus  6  preferably has a swivel head  6 D. Preferably, the adjusting device  6 C has the swivel head  6 D or the swivel head  6 D is arranged on the adjusting device  6 C, in particular at its lower end. 
     The swivel head  6 D can preferably be swiveled about a swivel axis, as indicated by an arrow in  FIG. 7 . Preferably, the swivel axis runs perpendicular to the movement axis B 3  or Z direction and/or in Y direction. 
     The swivel head  6 D can preferably be swiveled by at least about 90°. 
     The handling apparatus  6 , in particular the swivel head  6 D, preferably has several holding devices  6 E, in particular grippers and/or suction cups, for holding spectacle lenses  2 . In the illustrated example, the holding devices  6 E are each designed as suction cups. The suction cups or holding devices  6 E are preferably arranged at an angle of about 90° to one another. In particular, this supports fast changing of spectacle lenses  2 . 
     The handling apparatus  6  or the swivel head  6 D is preferably designed to hold two spectacle lenses  2  simultaneously. 
     Preferably, the following procedure is used to exchange spectacle lenses  2  or to exchange a processed spectacle lens  2  for a spectacle lens  2  to be processed in a processing station  3 , in particular the milling station  3 A and/or the turning station  3 B. 
     Preferably, during the processing of a first spectacle lens  2  in a processing station  3 , in particular in the milling station  3 A and/or turning station  3 B, the swivel head  6 D or one of the holding devices  6 E is positioned above a transport container  5  with a second spectacle lens  2  to be processed and this second spectacle lens  2  is gripped by means of the holding device  6 E and removed from the transport container  5 . Then, preferably, the swivel head  6 D with the second spectacle lens  2  to be processed is moved into the vicinity of the processing station  3 , in particular in such a way that the first spectacle lens  2  can be removed from the processing station  3  as quickly as possible with the swivel head  6 D or the free holding device  6 E when the processing is finished. 
     When the first spectacle lens  2  is now finished being processed in the processing station  3 , the handling apparatus  6  or the swivel head  6 D is preferably moved or displaced to the finished processed spectacle lens  2  and the finished processed first spectacle lens  2  is gripped with the unoccupied holding device  6 E and removed from the chuck  2 D. Subsequently, the swivel head  6 D is preferably swiveled, preferably by about 90°, and, if necessary, the adjusting device  6 C is moved before, during and/or after the swiveling of the swivel head  6 D, so that the second spectacle lens  2  to be processed can be inserted into the processing station  3 , in particular a chuck  2 D of a workpiece spindle of the processing station  3 . The second spectacle lens  2  is inserted into the processing station  3  or the chuck  2 D. Afterwards, the swivel head  6 D with the finished processed spectacle lens  2  is preferably moved out of the processing station  3  again. 
     Preferably, the finished processed spectacle lens  2  is then optionally handed over to a further processing station  3 , in particular the turning station  3 B, or to the transport container  5  for the spectacle lens  2 . 
     The handling of spectacle lenses  2  with the handling apparatus  6  preferably takes place during the processing of further spectacle lenses  2  in the processing stations  3 , in particular the milling station  3 A and/or the turning station  3 B. In particular, during the processing of one or more spectacle lenses  2  in the milling station  3 A and/or turning station  3 B, one or more further spectacle lenses  2  are removed from transport containers  5 , deposited in transport containers  5  and/or transferred between the transport containers  5  and/or the processing stations  3 . 
     In this way, the processing times of the processing stations  3  can be used sensibly and the throughput of spectacle lenses  2  can be increased or downtimes of the processing stations  3  can be minimized. The processing times for a spectacle lens  2  are typically about 10 to 15 seconds in the milling station  3 A and typically about 30 seconds in the turning station  3 B. Therefore, for optimum utilization of the processing system  1 , it is particularly advantageous, especially in the case of the turning station  3 B, to change the spectacle lenses  2  quickly and/or to use the time in which one or more spectacle lenses  2  are being processed in the turning station  3 B for further handling steps. 
     Handling Apparatus Polishing Side 
       FIGS. 8 and 9  show the processing system  1  with the handling apparatus  7  in different views.  FIGS. 10 and 11  show the handling apparatus  7  in different views. 
     The handling apparatus  7  is preferably designed for handling spectacle lenses  2 , in particular for handling several spectacle lenses  2  simultaneously, particularly preferably four spectacle lenses  2  or two pairs of spectacle lenses  2 . 
     Preferably, the handling apparatus  7  is assigned to several processing stations  3 , in particular one or more polishing stations  3 D and/or the cleaning station  3 E, and/or is arranged on the polishing side  1 B. 
     The handling apparatus  7  is preferably designed for handing over spectacle lenses  2  between the transport system  4  and several processing stations  3 , in particular the polishing station  3 D and/or cleaning station  3 E. In particular, the handling apparatus  7  is designed for the direct handing over of spectacle lenses  2  to one or more workpiece spindles or chucks  2 D of the workpiece spindles of the polishing station  3 D. 
     The handling apparatus  7  is preferably movable along and/or parallel to the transport system  4  or at least one of the transport devices  4 A, in particular parallel to the X axis. Alternatively or additionally, the handling apparatus  7  of the polishing side  1 B and the handling apparatus  6  of the processing side  1 A are arranged and/or movable parallel to each other. 
     The handling apparatus  7  is preferably arranged at least partially above the transport system  4  and/or designed for handling the spectacle lenses  2  from above the transport system  4  or the transport devices  4 A. This is conducive to a compact design. 
     The handling apparatus  7  or at least parts thereof are preferably arranged vertically above the transport system  4  or the transport device  4 A. In particular, this is conducive to a compact design of the processing system  1 . 
     The handling apparatus  7  preferably has several movement axes B 4 , B 5 , B 6  and/or is movable or displaceable along the movement axes B 4 -B 6 . 
     The movement axis B 4  preferably runs at least substantially horizontally and/or parallel to the X axis. The movement axis B 4  is preferably arranged perpendicularly above the transport system  4  or the transport device  4 A. The movement axis B 4  is preferably a linear movement axis. 
     The movement axis B 5  preferably runs vertically or perpendicularly or in the Z direction. The movement axis B 5  is preferably a linear movement axis. 
     The handling apparatus  7  preferably has two, in particular parallel, movement axes B 5 . 
     The movement axis B 6  preferably runs vertically or perpendicularly or in the Z direction. The movement axis B 6  is preferably a swivel or rotation axis. 
     Preferably, the handling apparatus  7  has two, in particular parallel, movement axes B 6  or swivel axes or rotation axes. 
     The handling apparatus  7  preferably has a guide  7 A or is arranged thereon. The handling apparatus  7  is preferably displaceable along or parallel to the guide  7 A. 
     In particular, the guide  7 A is designed as a linear guide and/or is arranged parallel to the transport device  4 A or transport direction R 1 , R 2  and/or to the guide  6 A of the handling apparatus  6  of the processing side  1 A. 
     The guide  7 A is preferably arranged above, in particular (perpendicularly) above, the (polishing-side) transport device  4 A or the transport system  4 . 
     Preferably, the guide  7 A has or forms the movement axis B 4 . 
     For better differentiation, the guide  7 A is also referred to as longitudinal guide  7 A in the following. 
     The handling apparatus  7  preferably has a rail or guide  7 B, hereinafter also referred to as vertical guide  7 B for better differentiation. 
     The vertical guide  7 B preferably runs vertically or in the Z direction. 
     Preferably, the vertical guide  7 B has the movement axis B 5  or the vertical guide  7 B forms the movement axis B 5 . 
     The longitudinal guide  7 A and/or vertical guide  7 B are preferably each formed by or have a guide rail and/or a carriage. 
     Preferably, the handling apparatus  7  has two vertical guides  7 B, in particular of similar or identical design. The vertical guides  7 B are preferably arranged parallel to each other and/or next to each other. 
     The handling apparatus  7  preferably has an arm  7 C. The arm  7 C is preferably movably mounted on the vertical guide  7 B and/or movable or displaceable along the vertical guide  7 B. Preferably, the arm  7 C projects from the vertical guide  7 B at an angle to the movement axis B 5 . 
     Preferably, the handling apparatus  7  has two (at least predominantly) similar or identically formed arms  7 C. In particular, the arms  7 C are arranged parallel to each other and/or next to each other. Preferably, each of the arms  7 C is mounted on a vertical guide  7 B. 
     The handling apparatus  7  preferably has a carriage or carrier  7 E for the arms  7 C and/or vertical guides  7 B. In particular, the arms  7 C and/or vertical guides  7 B are arranged or supported on or held by the common carrier  7 E. 
     The arms  7 C are preferably movable or displaceable independently of each other. 
     The arm  7 C preferably has, in particular at the end or at the lower end, one or preferably more holding devices  7 D for holding and/or gripping spectacle lenses  2 . 
     Preferably, the different holding devices  7 D of an arm  7 C are predominantly identical in design, although preferably the holding devices  7 D of the first arm  7 C are designed differently from the holding devices  7 D of the second arm  7 C. 
     Preferably, the holding devices  7 D of the first arm  7 C are designed as suction cups and/or the holding devices  7 D of the second arm  7 C are designed as grippers with which the spectacle lenses  2  are held at the edge, in particular so that damage to the surfaces of the spectacle lenses is avoided. In particular, the grippers of the second arm  7 C have several fingers which are applied or can be applied to the edge of the spectacle lens  2  for holding it. 
     In the following, for better differentiation, preferably the arm  7 C with the holding devices  7 D designed as suction cups is referred to as the first arm and the arm  7 C with the holding devices  7 D designed as grippers is referred to as the second arm. 
     In particular, it is provided that in the polishing station  3 D spectacle lenses  2  still to be processed or polished are gripped or held with the suction cups and/or finished polished spectacle lenses  2  are gripped or held with the grippers. 
     Preferably, the guide  7 B has the rotation axis or swivel axis or movement axis B 6 , or the two guides  7 B each have a rotation axis or swivel axis or movement axis B 6 . 
     In particular, the arm  7 C is rotatable or swivable about the vertical guide  7 B or movement axis B 6 . By rotating or swiveling the arm  7 C about the movement axis B 6 , the holding device  7 D or the spectacle lens  2  held by it can be moved from a position above the transport system  4  or transport container  5  into a position above the polishing station  3 D, in particular a workpiece spindle of the polishing station  3 D. 
     Preferably, the two arms  7 C are rotatable in opposite directions about their respective axis of rotation B 6 , in particular simultaneously. 
     The handling of spectacle lenses  2  by means of the handling apparatus  7  is preferably performed as follows: 
     The first arm  7 C is preferably moved over a transport container  5  with one or two spectacle lenses  2 . The spectacle lenses  2  located in the transport container  5  are gripped or sucked in by means of the holding devices  7 D, wherein for this purpose the arm  7 C is moved or can be moved vertically or along the movement axis B 5  and/or vertical guide  7 B. 
     The first arm  7 C is then moved upward along the movement axis B 5  and rotated about the movement axis B 6 , preferably by about 180°. 
     If necessary, for positioning the holding device  7 D or spectacle lenses  2  or for changing the spectacle lenses  2  in the polishing station  3 D, the handling apparatus  7  is also moved along the longitudinal guide  7 A or along the movement axis B 4 . 
     In particular, the handling apparatus  7  and/or the second arm  7 C are moved in such a way that the grippers of the second arm  7 C are in a position in which they can remove finished polished spectacle lenses  2  from the polishing station  3 D or workpiece spindle of the polishing station  3 D. 
     When the spectacle lenses  2  have been finished polishing in the polishing station  3 D, preferably first the second arm  7 C is moved along the movement axis B 5 , the finished polished spectacle lenses  2  located in the polishing station  3 D are gripped and removed from the polishing station  3 D by moving the arm  7 C back along the movement axis B 5  or the vertical guide  7 B. Then, preferably, the handling apparatus  7  is moved along the movement axis B 4  or longitudinal guide  7 A so that the first arm  7 C with the stocked spectacle lenses  2  or those to be polished is positioned above the polishing station  3  or its workpiece spindles. Then, preferably, the first arm  7 C is moved or lowered along the movement axis B 5  or vertical guide  7 B and the spectacle lenses  2  are inserted into the polishing station  3 D. 
     The handling apparatus  7  is then preferably moved in such a way that the finished polished spectacle lenses  2  held by the grippers can be cleaned in the cleaning station  3 E. After cleaning, the finished polished and cleaned spectacle lenses  2  are preferably placed back into the transport container  5 , for which purpose the handling apparatus  7  is moved accordingly. 
     The polishing of a spectacle lens  2  or the simultaneous polishing of two spectacle lenses  2  in the polishing station  3 D usually takes about 2 to 3 minutes. Therefore, similar to the handling apparatus  6  of the processing side  1 A, it is advantageous for an optimal utilization of the processing system  1  or the polishing station  3 D to change the spectacle lenses  2  as quickly as possible and to carry out the further handling of the spectacle lenses  2 , such as removal from transport containers  5 , transfer from the polishing station  3 D to the cleaning station  3 E or the like, during the processing of further spectacle lenses  2  in the polishing station  3 D. In this way, the processing times of the processing stations  3  or polishing stations  3 D can be used sensibly, in particular for further handling steps of spectacle lenses  2 , and the throughput of spectacle lenses  2  can be increased or downtimes of the processing station(s)  3  or polishing station(s)  3 D can be minimized. 
     The handling of spectacle lenses  2  with the handling apparatus  7  preferably takes place during the processing of further spectacle lenses  2  in the processing stations  3 , in particular the polishing stations  3 D. In particular, during the processing of one or more spectacle lenses  2  in the polishing stations  3 D, one or more further spectacle lenses  2  are removed from a transport container  5 , deposited in a transport container  5 , cleaned in the cleaning station  3 E and/or transferred between transport containers  5 , the processing stations  3  and/or the cleaning station  3 E. 
     Handling Apparatus for Tools 
       FIGS. 12 and 13  show the processing system  1  with the handling apparatus  8  for tools  15 , in particular polishing tools.  FIG. 14  shows the tool magazine  14  and the cleaning station  3 E.  FIG. 15  shows the tool magazine  14  and the handling apparatus  8  for tools  15 .  FIG. 16  shows a perspective view of the handling apparatus  8  for tools  15 . In the following, properties and features of the handling apparatus  8  are explained in particular with reference to  FIGS. 12-16 . 
     The handling apparatus  8  is preferably assigned to the polishing station(s)  3 D and/or the tool magazine  14 . In particular, the handling apparatus  8  is arranged on the polishing side  1 B and/or between the polishing stations  3 D. The handling apparatus  8  is preferably movable between the polishing stations  3 D and the tool magazine  14 . 
     The handling apparatus  8  is preferably arranged laterally offset in the Y direction with respect to the transport system  4  or the transport device  4 A and/or on the side of the handling apparatus  7  for spectacle lenses  2  facing away from the transport device  4 . 
     The handling apparatus  8  for the tools  15  is preferably movable independently of the handling apparatus  7  for spectacle lenses  2 , in particular in the X direction. 
     The handling apparatus  8  preferably has several movement axes B 7 , B 8 . Preferably, the movement axis B 7  and/or the movement axis B 8  is a linear movement axis. 
     Preferably, the movement axis B 7  runs at least essentially horizontally and/or in the X direction. Preferably, the movement axis B 7  runs parallel to the transport direction R 1 , R 2 , to the transport device  4 A and/or to the movement axis B 4  of the handling apparatus  7 . 
     The movement axis B 8  preferably runs vertically or perpendicularly or in the Z direction and/or parallel to the movement axis B 5  of the handling apparatus  7 . The movement axis B 8  is preferably a linear movement axis. 
     The handling apparatus  8  preferably has two movement axes B 8 . 
     The handling apparatus  8  preferably has a guide  8 A or is arranged thereon. The guide  8 A is preferably arranged above the transport system  4 , the polishing station  3 D, the tool magazine  14  and/or the cleaning station  3 E. 
     In particular, the guide  8 A is designed as a linear guide and/or is arranged parallel to the transport device  4 A or transport direction R 1 , R 2  and/or to the guide  7 A of the handling apparatus  7 . 
     The handling apparatus  8  is preferably displaceable along the guide  8 A or parallel to the guide  8 A. Preferably, the guide  8 A has or forms the movement axis B 7 . 
     For better differentiation, the guide  8 A is also referred to as longitudinal guide  8 A in the following. 
     The handling apparatus  8  preferably has a (further) guide  8 B, hereinafter also referred to as vertical guide  8 B for better differentiation. 
     The vertical guide  8 B preferably runs vertically or in the Z direction. Preferably, the vertical guide  8 B has or forms the movement axis B 8 . 
     Preferably, the handling apparatus  8  has two vertical guides  8 B, in particular of similar or identical design. 
     The longitudinal guide  8 A and/or vertical guide  8 B are preferably each formed by or have a guide rail and/or a carriage. 
     The vertical guide  8 B is preferably movably mounted on the longitudinal guide  8 A and/or movable or displaceable along the longitudinal guide  8 A. 
     The handling apparatus  8  preferably has an arm  8 C. The arm  8 C is preferably arranged on the vertical guide  8 B and/or can be moved longitudinally to the vertical guide  8 B. The arm  8 C preferably extends in the Z-direction or parallel to the vertical guide  8 B or movement axis B 8 . 
     Preferably, the handling apparatus  8  has two arms  8 C, in particular of similar or identical design. The arms  8 C are in particular arranged parallel to each other and/or next to each other. Preferably, each of the arms  8 C is mounted on a vertical guide  8 B. 
     The handling apparatus  8  preferably has a carriage or carrier  8 E for the arms  8 C and/or vertical guides  8 B. In particular, the arms  8 C and/or vertical guides  8 B are arranged or supported on or held by the common carrier  8 E. 
     The arms  8 C are preferably movable or displaceable independently of each other. 
     The arm  8 C preferably has, in particular at the end or at the lower end, one or preferably more grippers or holding devices  8 D for holding or gripping tools  15 , in particular polishing tools. Particularly preferably, the handling apparatus  8  has four holding devices  8 D and/or each arm  8 C has two holding devices  8 D. The holding devices  8 D are preferably arranged on a cross strut of the arm  8 C and/or next to each other. 
     Preferably, the tools  15  have a gripping groove extending in particular in the circumferential direction, in which the holding devices  8 D can engage or. 
     The holding devices  8 D are preferably arranged at a fixed distance from each other. In particular, the distance between the holding devices  8 D corresponds to the distance between the tools  15  arranged on the tool magazine  14 . 
     Preferably, the holding devices  8 D can be moved or displaced transversely, in particular perpendicularly, to the arm  8 C or the direction of movement B 8 , preferably in the Y direction. This facilitates or enables the removal of tools  15  from the tool magazine  14 . 
     In particular, the handling apparatus  8  is designed for changing tools  15  in pairs. The arm  8 C or the holding devices  8 D is/are preferably designed for holding or gripping two polishing tools simultaneously or in pairs. 
     Preferably, the handling of tools  15  by means of the handling apparatus  8  is performed as follows: 
     The handling apparatus  8  is preferably positioned with one of the arms  8 C by moving along the movement axis B 7  and/or the movement axis B 8  relative to the tool magazine  14  in such a way that one or two tools  15  or polishing tools can be gripped and/or removed from the tool magazine  14  by means of the holding devices  8 D of the arm  8 C. 
     Preferably, two tools  15  are gripped and/or removed from the tool magazine  14 , in particular simultaneously, with the holding devices  8 D of the arm  8 C. 
     Preferably, the holding devices  8 D engage in a groove of the tools  15  provided for this purpose in order to remove the tools  15 . The holding devices  8 D with the gripped tools  15  are then preferably moved a short distance away from the tool magazine  14  in order to release the tools  15  from the tool magazine or respective holders. 
     Then, the handling apparatus  8  is preferably moved to the polishing station  3 D. When a polishing of spectacle lenses  2  in the polishing station  3 D is finished, one or two tools  15  are preferably removed from the polishing station  3 D with the unoccupied arm  8 C by moving this arm  8 C accordingly and gripping the tools  15 . 
     Preferably, the arm  8 C now preferably moves out of the polishing station  3 D again. Then, preferably, the handling apparatus  8  is moved, preferably in the X direction or along the movement axis B 7 , so that the tools  15  already stocked with the other arm  8 C can be inserted into the polishing station  3 D. 
     Then, preferably, the tools  15  held or stocked with the other arm  8 C are inserted into the polishing station  3 D, for which the arm  8 C is moved accordingly. The arm  8 C or the holding devices  8 D are then moved out of the polishing station  3 D again. 
     Preferably, the handling apparatus  8  is then moved back to the tool magazine  14  and/or the used tools  15  are deposited in the tool magazine  14 . 
     Preferably, in the polishing station  3 D, the changing of the tools  15  by means of the handling apparatus  8  is carried out simultaneously with the changing of the spectacle lenses  2  by means of the handling apparatus  7 . The handling apparatuses  7  and  8  are preferably arranged or designed in such a way that the arms  7 C,  8 C or holding devices  7 D,  8 D can be moved or displaced into a working space of the polishing station  3 D simultaneously or at least directly one after the other. 
     In particular, the handling apparatus  7  for the spectacle lenses  2  and the handling apparatus  8  for the tools  15  operate independently of each other and/or the handling apparatuses  7 ,  8  do not have common movement axes. 
     The tools  15  can be cleaned in the cleaning station  3 E before being deposited in the tool magazine  14 . 
     Tool Magazine and Cleaning Station 
     The tool magazine  14  is preferably assigned to the polishing station  3 D or polishing stations  3 D and/or arranged between two polishing stations  3 D. Preferably, a large number of tools  15 , in particular polishing tools, are stored or can be stored in the tool magazine  14 . 
     The tool magazine  14  preferably has or is formed by an (at least substantially cylindrical) drum  14 B on which the tools  15  are arranged or held in the circumferential direction. The tools  15  held by the tool magazine are preferably radially aligned on the tool magazine  14 . 
     A longitudinal axis L of the tool magazine  14  or the drum  14 B preferably runs horizontally and/or parallel to the transport system  4  and/or the conveying direction R 1 , R 2  and/or to the movement axis B 7  and/or in the X direction. 
     The drum  14 B is preferably rotatable about the longitudinal axis L, in particular so that the tools  15  can each be moved into a position in which they can be gripped with the holding devices  8 D of the handling apparatus  8  for the tools  15 , in particular from above or a position above the tool magazine  14 . Preferably, horizontally aligned tools  15  are gripped with the handling apparatus  8  or its holding devices  8 D. 
     Preferably, the tool magazine  14  or the drum  14 B is exchangeable or removable from the processing system  1 . This enables a quick exchange of a large number of tools  15 . This minimizes downtimes. 
     The drum  14 B and/or the tool magazine  14  is preferably arranged on a rotary axis or shaft  14 A and/or is rotatably mounted by means of the shaft  14 A. 
     Preferably, the drum  14 B or the tool magazine  14  has an in particular radial and/or slot-like recess  14 C, preferably so that the drum  14 B and/or the tool magazine  14  can be pushed onto the shaft  14 A or arranged on the shaft  14 A by a linear movement in radial direction to the longitudinal axis L of the drum  14 B. Preferably, the recess  14 C extends over approximately half the diameter of the drum  14 B and/or from the edge to approximately the center or longitudinal axis L of the drum  14 B. Further, the recess  14 C preferably extends along the entire length of the drum  14 B parallel to the longitudinal axis L. This allows the tool magazine  14  to be easily changed. 
     In the illustrative example, the tool magazine  14  and/or the drum  14 B has several, here four, separate segments  14 D or is formed by them. The segments  14 D are preferably ring-like and/or circular disc-like. 
     Preferably, the segments  14 D are rigidly or non-rotatably connected to each other, for example by means of a connecting element such as a rod or the like, and/or form a structural unit. In this way, in particular the drum  14 B can be replaced or exchanged as a whole, or the segments  14 D can be replaced or exchanged together, which is advantageous in particular for a quick and uncomplicated exchange. However, it is also possible that the segments  14 D are not connected to each other and, in particular, can be exchanged or replaced individually. 
     The cleaning station  3 E is preferably designed for cleaning or washing and/or drying spectacle lenses  2  and/or tools  15 . 
     The cleaning station  3 E preferably has several nozzles  17  for dispensing or spraying a preferably liquid cleaning agent, in particular water. By means of the cleaning station  3 E and/or the nozzles  17 , residues of a polishing agent can preferably be removed, in particular rinsed off, from the tools  15  and/or spectacle lenses  2 . 
     The cleaning station  3 E preferably comprises a washing container  19 , in particular wherein the nozzles  17  are arranged in the washing container  19 . 
     Preferably, the washing container  19  is designed to collect and/or drain the cleaning liquid sprayed by the nozzles  17  and/or the contaminants rinsed off the tools  15  or spectacle lenses  2 . 
     Preferably, the tool magazine  14  is integrated in the cleaning station  3 E and/or in the washing container  19  and/or the washing container  19  or the cleaning station  13 E and the tool magazine  14  form a structural unit. 
     The cleaning station  3 E is preferably designed alternatively or additionally for drying the (cleaned or rinsed) spectacle lenses  2  and/or tools  15 . Drying can remove residues or residues of the cleaning agent, in particular water. 
     For drying, the cleaning station  3 E preferably has a blower for blowing away residues of the cleaning agent, in particular liquid residues or drops, or other deposits or soiling. 
     Alternatively or additionally, the cleaning station  3 E can also have a device for heating the tools  15  and/or spectacle lenses  2  so that drying can take place by evaporation of the cleaning agent or liquid. 
     The processing system  1  can alternatively or additionally also have one or more cleaning stations  3 E, for example for cleaning the spectacle lenses  2  after milling and/or turning. For this purpose, corresponding cleaning stations  3 E are preferably arranged immediately downstream of the milling stations  3 A and/or turning station  3 B and/or in the vicinity of these stations. As the case may be, some of the cleaning stations  3 E are also designed only for drying spectacle lenses  2  or blowing away deposits or contamination. 
     The cleaning of tools  15  and/or spectacle lenses  2  is preferably performed during a processing of further spectacle lenses  2  in the polishing station  3 D or polishing stations  3 D or simultaneously therewith. 
     Signing Station 
     The marking or signing station  3 C is designed for marking or signing spectacle lenses  2 , in particular with a laser  21  or laser beam. 
     By means of the signing station  3 C, preferably markings or signatures for a later processing, which for example indicate or identify a position of optical axes, other indications or the like, can be introduced into a spectacle lens  2 . This is particularly important for a later edge processing or edging of the spectacle lens  2 , in which the spectacle lens  2  is adapted to the shape of an associated spectacle frame, so that the spectacle lens  2  or its optical axes lie in the correct relative orientation to the spectacle frame. 
     The signing station  3 C preferably has an integrated handling apparatus  18  for handling spectacle lenses  2 . 
     The handling apparatus  18  is preferably designed to remove a spectacle lens  2  from a transport container  5  or from the transport system  4  and/or to move it into a signing position in which marking or signing is performed. 
     The handling apparatus  18  is preferably movable transversely, in particular perpendicularly, to the transport system  4 , the transport direction R 1 , R 2  and/or the X-axis and/or parallel to the Y-axis. 
     The handling apparatus  18  is preferably arranged at least partially above the transport system  4  and/or designed to handle the spectacle lenses  2  from above the transport system  4  or the transport device  4 A. This is conducive to a compact design. The handling apparatus  18  or at least parts thereof are preferably arranged vertically above the transport system  4  and/or the corresponding transport device  4 A. In particular, this is conducive to a compact design of the processing system  1 . 
     The handling apparatus  18  preferably has a plurality of movement axes B 9 , B 10  and/or is movable or traversable along the movement axes B 9 , B 10 . Preferably, the movement axis B 9  and/or the movement axis B 10  is a linear movement axis. 
     Preferably, the movement axis B 9  runs at least substantially horizontally and/or parallel to the Y-axis. Particularly preferably, the movement axis B 9  runs transversely, in particular perpendicularly, to the transport device  4 A or transport direction R 1 , R 2  and/or to the X axis, 
     The movement axis B 10  preferably runs transversely, in particular orthogonally, to the movement axis B 9 . Preferably, the movement axis B 10  runs vertically or perpendicularly or in the Z direction. The movement axis B 10  is preferably arranged over or above the transport system  4 . 
     The handling apparatus  18  preferably has a guide  18 A or is arranged thereon. The handling apparatus  18  is preferably displaceable along or parallel to the guide  18 A. 
     In particular, the guide  18 A is designed as a linear guide and/or is arranged transversely, in particular perpendicularly, to the transport device  4 A or transport direction R 1 , R 2  and/or X axis and/or parallel to the Y axis. 
     The guide  18 A is preferably arranged at least partially vertically above the transport device  4 A or the transport system  4 . 
     Preferably, the guide  18 A has or forms the movement axis B 9 . 
     For better differentiation, the guide  18 A is also referred to as transverse guide  18 A in the following. 
     The handling apparatus  18  preferably has a guide  18 B, hereinafter also referred to as vertical guide  18 B for better distinction. 
     The transverse guide  18 A and/or vertical guide  18 B are preferably formed by or have a guide rail and/or a carriage. The vertical guide  18 B is preferably movably mounted on the transverse guide  18 A and/or movable or displaceable along the vertical guide  18 A. 
     The vertical guide  18 B is preferably arranged transversely, in particular orthogonally, to the transverse guide  18 A and/or movement axis B 9 . 
     Preferably, the vertical guide  18 B has or forms the movement axis B 10 . 
     The handling apparatus  18  preferably has a holding device  18 C. The holding device  18 C is preferably displaceable in the Z direction and/or along the movement axis B 10 . 
     The holding device  18 C is preferably displaceably mounted on the vertical guide  18 B and/or movable or displaceable along the vertical guide  18 B or movement axis B 10 . 
     The holding device  18 C preferably has or is formed by a suction cup for holding or gripping a spectacle lens  2 . 
     The signing station  3 C preferably has a laser  21  for marking or signing the spectacle lenses  2 . 
     The laser  21  may be designed to generate different laser beams, in particular to generate laser beams for signing the spectacle lenses  2  and to generate laser beams for measuring the spectacle lenses  2 . These laser beams may differ, for example, in wavelength, intensity and/or power. 
     The laser  21  is preferably arranged transversely, in particular perpendicularly, to the transport system  4  or the transport direction R 1 , R 2  and/or to the X axis. 
     Preferably, the laser  21  is arranged horizontally and/or above the transport system  4  or at least partially or in sections above the transport system  4 . 
     Preferably, the laser  21  is arranged parallel to the transverse guide  18  and/or the movement axis B 9 . In particular, the laser  21  is arranged directly adjacent to the transverse guide  18 . 
     Preferably, the laser beam generated by the laser  21  for marking or signing the spectacle lenses  2  is deflected, in particular by at least substantially 90° and/or from a horizontal direction to a vertical direction. 
     Preferably, the following procedure is used to mark or sign a spectacle lens  2  with the signing station  3 C. 
     The spectacle lens  2  or the transport container  5  with the spectacle lens  2  is preferably first positioned in such a way that the spectacle lens  2  can be gripped by the holding device  18 C. In particular, the spectacle lens  2  is positioned vertically or perpendicularly below the holding device  18 C. 
     Preferably, the holding device  18 C is then moved along the movement axes B 9  and/or B 10  so that the holding device  18 C is preferably positioned directly above the spectacle lens  2  and can preferably grip, in particular suck, the spectacle lens  2 . The spectacle lens  2  is preferably gripped by the holding device  18 C. 
     Subsequently, the spectacle lens  2  is preferably moved into a marking position or signing position by corresponding movement along the movement axes B 9  and/or B 10  and deposited or positioned in the signing position or the chuck  2 D. The holding device  18 C is preferably moved away from the spectacle lens  2  after the depositing or positioning of the spectacle lens  2 , in particular in order to enable or not to hinder a signing of the spectacle lens  2 . 
     Particularly preferably, the spectacle lens  2  is correctly aligned in the signing position, for example rotated and/or tilted, and/or a laser beam is adjusted, moved and/or focused to the position or alignment of the spectacle lens  2  in the signing position. 
     It is also possible to measure or determine the orientation of the spectacle lens  2  in the signing position, in particular by means of the laser  21 . This is particularly advantageous when working with blockless or non-blocked spectacle lenses  2 . 
     Then, preferably, the spectacle lens  2  is signed or marked with the laser  21  or laser beam. Signing usually takes only a few seconds, preferably less than 5 seconds. However, signing can also take more time, for example if special characters or a logo are introduced into the spectacle lens  2 . 
     Subsequently, the holding device  18 C is preferably moved back to the spectacle lens  2 , the spectacle lens  2  is gripped with the holding device  18 C, the holding device  18 C with the spectacle lens  2  is moved back to the transport container  5  and/or the spectacle lens  2  is deposited again in the transport container  5 . 
     Quality Control 
     Preferably, after a processing in one or more of the processing stations  3 , a quality control of the processed spectacle lenses  2  is carried out, in particular after polishing and/or before an edge processing or edging and/or coating of the spectacle lenses  2 . For this purpose, the processed surface of the spectacle lens  2  is measured and/or checked whether the shape or surface of the processed spectacle lens  2  corresponds to a desired or predetermined shape or surface. 
     Preferably, the quality control is performed without contact and/or by an optical measurement of the processed spectacle lens  2 , in particular by phase-measuring deflectometry (PMD) and/or by reflectance measurements. 
     In particular, the quality control can also be carried out in or by the signing station  3 C. For this purpose, the spectacle lens  2  is preferably measured or checked by means of the laser  21 . 
     Control and Procedure 
     As mentioned at the outset, the control system preferably has one or more control devices  11  and/or the control system of the processing system  1  is housed in one or more switch cabinets  11 A. 
     Preferably, the processing system has a plurality of control devices  11  which are designed for controlling, in particular separately or independently, different components of the processing system  1 , for example one or more processing stations  3 , one or more handling apparatuses  6 - 8  and/or the transport system  4  or the transport devices  4 A and/or the changing device  4 B. 
     Preferably, the switch cabinets  11 A are each assigned to one of the parts  1 A,  1 B. In particular, one of the switch cabinets  11 A is assigned to the processing side  1 A and the other switch cabinet  11 A or its control device  11  is assigned to the polishing side  1 B or is designed to control the components of the respective part  1 A,  1 B, in particular the processing stations  3 , the handling apparatuses  6 - 8  and/or the transport device  4 A. 
     Preferably, the control system is designed to manage processing statuses of the spectacle lenses  2 . 
     The control system preferably forms a lens management system. 
     The processing status of a spectacle lens  2  is particularly important in the event of malfunctions and/or a restart of the processing system  1  and/or individual processing stations  3 . In such a case, it is advantageous if the processing status of a spectacle lens  2  which has not yet been processed completely or only partially or in only some processing stations  3  can be retrieved and processing can be continued immediately after the malfunction has been rectified or after a restart. 
     Preferably, for each spectacle lens  2  that is or is to be processed in the processing system  1 , a processing status is stored or can be stored in the control system and/or can be retrieved by the control system. 
     Preferably, the processing status of a spectacle lens is stored or saved in the identifier, already mentioned above, of the transport container  5  in which the spectacle lens  2  is located or to which the spectacle lens  2  is assigned, or can be retrieved by means of the identifier. 
     In particular, the processing status is stored externally, for example on a server or in a database. However, it is also possible to store the processing status in the identifier, for example if the identifier is designed as a writable RFID chip or the like, or to store the processing status in a memory device of the processing system  1 , for example in the switch cabinet  11 A. 
     The processing status is preferably retrieved by the control system in such a way that the identifier is first read in by the detection device  4 E and then the control system retrieves the processing status by means of the identifier or information contained in the identifier. 
     The processing status may have or contain information about which processing operations (for example milling, turning, polishing and/or signing) have to be performed and/or have already been performed on the spectacle lens  2 . Furthermore, the processing status may have information about an (expected) processing time in one or more of the processing stations  3 . 
     Preferably, the processing status of a spectacle lens  2  is changed or updated when or after the spectacle lens  2  has been finished being processed in one of the processing stations  3 . In particular, the processing stations  3  are adapted to change the processing status or to transmit information that the spectacle lens  2  has been finished being processed in the respective processing station  3 . The information that the spectacle lens  2  has been processed can be transmitted, for example, to a control system or system control, a computing unit, a database, a server, the control device  11  or another device, wherein the stored processing status is changed or updated after receipt of the information. 
     Preferably, the spectacle lenses  2  are processed in the processing system  1  in the order in which they or the corresponding transport containers  5  enter the processing system  1  or pass through the processing system  1 . Preferably, the order of the transport containers  5  in the transport system  4  is maintained while passing through the processing system  1 . 
     However, it is also possible that—in particular depending on a processing status—by means of the handling apparatus  6 ,  7  the spectacle lenses  2  are not transferred to the processing stations  3  in the sequence of the transport containers  5  assigned to the spectacle lenses  2  or an overtaking of spectacle lenses  2  takes place or is made possible. For example, it is possible that from a first and second transport container  5  arranged one after the other in the transport system  4 , the spectacle lenses  2  of the second transport container  5  are first transferred to one or more processing stations  3  and only after the processing of the spectacle lenses  2  of the second transport container  5 , the spectacle lenses  2  of the first transport container  5  are transferred to one or more processing stations  3 . This can be expedient in order to achieve the highest possible utilization or the lowest possible dead times or downtimes of individual processing stations  3 , for example if the processing of the spectacle lenses  2  of the second transport container  5  takes less time than the processing of the spectacle lenses  2  of the first transport container  5 . 
     As already explained before, one or more further transport devices  4 A and/or a parking and/or waiting area can also be provided for overtaking spectacle lenses  2  and/or transport containers  5 . 
     The actual processing sequence of the spectacle lenses  2  in the processing stations  3  can depend in particular on the processing status of the spectacle lenses  2  or be changed taking into account the processing status of the spectacle lenses  2 . It is also possible that the processing sequence depends on a utilization of the processing stations  3  or is changed taking into account the utilization of the processing stations  3 . 
     An “overtaking” of the spectacle lenses  2  or a processing of the spectacle lenses  2  in a different sequence than the sequence of the transport containers  5  assigned to the spectacle lenses  2  can be particularly expedient if several processing stations  3  or processing stations  3  of the same type are provided for the same processing, in the illustration example particularly in the case of the two polishing stations  3 D. Also a failure of a processing station  3  or a faulty processing of one or more spectacle lenses  2  in a processing station  3  can lead to a change of the processing sequence. 
     Likewise, it is conceivable that a processing of a spectacle lens  2  must be repeated in a processing station  3  or that a spectacle lens  2  must be processed again in a processing station  3 . 
     In another example, it may happen that spectacle lenses  2  or transport containers  5  with spectacle lenses  2  are removed from the processing system  1  or transport system  4  in the meantime and are returned to it later, so that only selected processing operations have to be carried out. 
     Operating Apparatus 
     The operating apparatus  12  is preferably designed for operating or controlling the processing system  1  and/or individual components of the processing system  1 , such as the processing stations  3 , the transport system  4  and/or the handling apparatuses  6 - 8 . 
     The processing system  1  can preferably be operated via the input device  12 B of the operating apparatus  12 . 
     The input device  12 B may have or be formed by a keyboard, one or more levers, buttons, knobs, switches, and/or other control elements and/or a touchscreen or touch-sensitive display. 
     The display device  12 A is preferably formed by an electronic screen, in particular a touch screen or a touch-sensitive display. 
     Preferably, the operating apparatus  12  or display device  12 A is designed to display a control menu for one or more processing stations  3 , in particular different control menus for different processing stations  3 . 
     Preferably, different processing stations  3  of the processing system  1  can be controlled or operated individually or independently of each other by means of the operating apparatus  12 . 
     According to one aspect, the operating apparatus  12  is arranged on the arm  13 , in particular at the end thereof. Preferably, the arm  13  is pivotable about a pivot axis S. Preferably, the arm  13  is a pivot arm. 
     The arm  13  is preferably arranged outside the housing or casing  10 . 
     In particular, the arm  13  has several sections  13 A,  13 B, in particular a first section  13 A and a second section  13 B. The sections  13 A,  13 B are preferably connected to each other in an articulated manner. 
     The first section  13 A is preferably arranged above the casing  10 . Preferably, the first section  13 A runs at least substantially horizontally. 
     The second section  13 B preferably extends at least substantially vertically or in the Z-direction and/or is arranged laterally or outside the casing  10 . 
     The second section  13 B is preferably arranged at right angles to the first section  13 A. 
     The operating apparatus  12  is preferably arranged at the second section  13 B or its end. 
     Preferably, the second section  13 B is rotatable relative to the first section  13 A and/or the operating apparatus  12  is pivotable or rotatable relative to the second section  13 B, in particular about the Z-axis or vertical. 
     In particular, the position or pivot position or pivot angle of the arm  13  and/or the relative orientation of the first section  13 A, the second section  13 B and/or the operating apparatus  12 A to one another can be used to determine in front of which processing station  3  the operating apparatus  12  is located and/or in which direction or to which processing station  3 D the operating apparatus  12  is oriented. In particular, this information can be used to display a corresponding control menu for the nearest processing station  3  and/or the processing station  3  in whose direction the operating apparatus  12  is aligned. 
     Preferably, the arm  13  and/or the operating apparatus  12  have one or more sensors for detecting or determining the pivot position or the pivot angle. 
     The arm  13 , in particular the second section  13 B, or the operating apparatus  12  can preferably be moved or pivoted to different sides of the processing system  1 . In particular, the arm  13 , in particular the second section  13 B, or the operating apparatus  12  can be moved or positioned in front of each of the processing stations  3  and/or in front of the switch cabinet  11 A. This allows the operating apparatus to be positioned and operated as required and conveniently for operating the processing system  1  and/or the processing stations  3 . 
     However, it is also possible that the operating apparatus  12  is freely movable and/or not arranged on an arm  13 . For example, the operating apparatus  12  can be formed by a smartphone, a tablet, a laptop or the like. Also in this case, the relative position and/or orientations of the operating apparatus with respect to the processing stations  3  can preferably be determined and a corresponding control menu displayed. 
     The operating apparatus  12  preferably has an emergency stop switch  12 C. Preferably, one or more processing stations  3  and/or the transport system  4  or the processing system  1  as a whole can be halted or stopped by means of the emergency stop switch  12 C. This increases the operating safety of the processing system  1 . 
     Preferably, user guidance can be provided by the operating apparatus  12  and/or the control menu. In particular, the operating apparatus  12  or display device  12 A issues or displays instructions to an operator, for example when a tool  15  needs to be replaced, when a maintenance, inspection, repair and/or servicing measure needs to be carried out for the respective processing station  3  and/or the transport system  4 , when a part or tool needs to be replaced, when a fault has occurred, when an operating medium, such as coolant, polishing agent or cleaning agent, needs to be refilled or the like. 
     The operating apparatus  12  may alternatively or additionally be designed to display the processing status of one or more spectacle lenses  2 , to display a utilization of one or more processing stations  3 , to display operating parameters of the processing system  1  or the processing stations  3 , or the like. 
     The processing system  1  may have an additional operating apparatus  11 B, as can be seen, for example, in  FIGS. 4, 8 and 13 . 
     The operating apparatus  11 B is preferably permanently installed or—in contrast to the operating apparatus  12 —not movable. Preferably, the operating apparatus  11 B is arranged on the switch cabinet  11 A, on a transverse side or front side of the processing system  1  and/or opposite the entrance E and/or exit A. 
     The operating apparatus  11 B preferably has a display device and/or an input device. Preferably, the explanations relating to the display device  12 A and/or input device  12 B of the operating apparatus  12  also apply accordingly to the operating apparatus  11 . 
     The operating apparatus  11 B is preferably designed to operate or control the (entire) processing system  1 . 
     The operating apparatus  11 B can be arranged inside or outside the casing  10  (cf.  FIGS. 4 and 8 ). 
     Individual aspects and features of the processing system  1  according to the proposal and the described processes and different embodiments can also be implemented independently of one another, but also in any combination. 
     A superordinate aspect or a fundamental idea of the present invention, which can also form the basis of an independent claim, consists in particular in specifying a processing system or a method for processing spectacle lenses, the processing system having a plurality of processing stations and a transport system for the spectacle lenses, and a plurality of spectacle lenses being processable or being processed simultaneously in different or different types of processing stations. In particular, all further features described above are in each case not mandatory, but merely represent preferred embodiments and can be combined in any desired combination in an independent claim. 
     LIST OF REFERENCE SIGNS 
     
         
           1  Processing system 
           1 A Part/Processing side 
           1 B Part/polishing side 
           2  Spectacle lens 
           2 A Block piece 
           2 B Block material 
           2 C Protective layer 
           2 D Chuck 
           3  Processing station 
           3 A Milling station 
           3 B Turning station 
           3 C Signing station 
           3 D Polishing station 
           3 E Cleaning station 
           4  Transport system 
           4 A Transport device 
           4 B Changing device 
           4 C Stopper 
           4 D Storage device 
           4 E Detection device 
           4 F Sensor 
           5  Transport container 
           6  Handling apparatus for spectacle lenses (processing side) 
           6 A Guide/longitudinal guide 
           6 B Leadership/cross leadership 
           6 C Adjusting device 
           6 D Swivel head 
           6 E Holding device 
           7  Handling apparatus for spectacle lenses (polishing side) 
           7 A Guide/longitudinal guide 
           7 B Guide/vertical guide 
           7 C Arm 
           7 D Holding device 
           7 E Carrier 
           8  Handling apparatus for tools 
           8 A Guide/longitudinal guide 
           8 B Guide/vertical guide 
           8 C Arm 
           8 D Holding device 
           8 E Carrier 
           9  Base frame 
           9 A Subframe 
           10  Casing 
           10 A Plate 
           11  Control device 
           11 A Switch cabinet 
           11 B Operating apparatus 
           12  Operating apparatus 
           12 A Display device 
           12 B Input device 
           12 C Emergency stop switch 
           13  Arm (operating apparatus) 
           13 A first section 
           13 B second section 
           13  Tool magazine 
           14 A Shaft 
           14 B Drum 
           14 C Recess 
           14 D Segment 
           15  Tool 
           16  Transfer system 
           17  Nozzle 
           18  Handling apparatus (signing station) 
           18 A Guide/transverse guide 
           18 B Guide/vertical guide 
           18 C Holding device 
           19  Washing container 
           20  Supply system 
           20 A Line 
           21  Laser 
         E Entrance 
         A Exit 
         B 1  Movement axis 
         B 2  Movement axis 
         B 3  Movement axis 
         B 4  Movement axis 
         B 5  Movement axis 
         B 6  Movement axis 
         B 7  Movement axis 
         B 8  Movement axis 
         B 9  Movement axis 
         B 10  Movement axis 
         H Main conveying direction 
         L Longitudinal axis 
         R 1  Transport direction 
         R 2  Transport direction 
         S Pivot axis 
         X Axis 
         Y Axis 
         Z Axis