Abstract:
An eyewear system enables a person to switch lenses among a variety of frames or switch a variety of lenses within a single frame. The lenses are positioned in one or more subframe assemblies that can be easily attached to and detached from a frame assembly that may not otherwise contain lenses.

Description:
RELATED APPLICATIONS  
       [0001]     This application claims the priority benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 60/508,674, filed on Oct. 2, 2003, which is hereby incorporated by reference in its entirety. 
     
    
     BACKGROUND OF THE INVENTION  
       [0002]     1. Field of the Invention  
         [0003]     The present invention generally relates to eyewear frames and lenses. More particularly, the present invention relates to an eyewear assembly in which a single set of lenses can be inserted and removed from behind a plurality of frames or multiple sets of lenses can be inserted and removed from behind a single frame.  
         [0004]     2. Description of the Related Art  
         [0005]     The cost of quality prescription lenses has risen dramatically in the past ten years. Many people who wear eyeglasses today desire so-called progressive lenses in which the power of the lens varies along the surface of the lens. Unfortunately, progressive lenses are more expensive than ordinary prescription lenses or bifocal lenses. Additionally, a type of thin lens that is designed to replace a relatively thicker lens also is available but has an elevated cost. Further, coatings and the like can be added to a lens to, for example, reduce glare or allow the lens to change tint. These coatings also increase the cost of the lens.  
         [0006]     At the same time, people who wear eyeglasses often purchase more than one pair of eyeglasses for different functional and aesthetic reasons. For instance, different eyeglasses may be purchased to increase strength or comfort, to alter the fit or the weight, to vary the flexibility or the rigidity or to provide a different aesthetic look by changing the shape of the frame or the coloring of the frame. This, of course, requires the purchase of a complete set of eyewear, including the frame and the expensive prescription lenses.  
         [0007]     On the other hand, some people purchase more than one pair of eyewear having a single style of frame but use one of the frames for tinted lenses and the other for non-tinted lenses. Of course, these people must then carry both pair of eyewear and must absorb the additional costs associated with the second frame.  
       SUMMARY OF THE INVENTION  
       [0008]     It would be desirable to create a system of eyewear that enables a person to use a single pair of lenses with multiple frame structures or a single frame structure with multiple pairs of lenses.  
         [0009]     In the first arrangement, the frame structures can vary among one another by virtue of functionality, features or aesthetic appearance. As such, variations among the frames can be provided by design, materials used, coloring, shape, decorations, construction or the like. Such a system would allow a person who wears eyewear to have several sets of frames without the need for more than one set of lenses.  
         [0010]     In the second arrangement, the lenses can vary among one another by virtue of tinting or magnification features, for instance. Different eyeglass lenses may also be purchased for various vision correcting purposes, for purposes such as glare reduction, magnification, protection from UV rays, lighter weights, as for aesthetic reasons such as thinness of the lenses, tints and coloring of the lenses. Thus, a person can maintain a single frame in which the lenses are removed and replaced quickly and easily to accommodate changes in the lenses. For instance, sun lenses can be installed in place of clear lenses or a magnifying lens can be used in place of a wearer&#39;s usual lens.  
         [0011]     Accordingly, one aspect of certain embodiments of the present invention involves providing a user with one pair of lenses that can be easily attached and detached to a plurality of complementary frame designs.  
         [0012]     Another aspect of certain embodiments of the present invention involves enabling a user to remove the lenses from one frame and insert the lenses in another frame without the use of mechanical tools or equipment or enabling a user to remove at least one lens from a frame and replace that lens with another lens without the use of mechanical tools or equipment.  
         [0013]     A further aspect of certain embodiments of the present invention involves enabling an eyeglass wearer to easily attach to and detach from a single pair of lenses multiple frames without contacting with one&#39;s fingers a region of the lenses through which one looks.  
         [0014]     An aspect of the present invention also involves an eyeglass assembly comprising a frame assembly and a subframe assembly. The frame assembly comprises a pair of temples, a front side and a back side. The back side of the frame assembly is closer to a wearer&#39;s face than the front side. The subframe assembly comprises at least one lens. The subframe assembly also comprises a front side and a back side. The back side of the subframe assembly is closer to the wearer&#39;s face than the front side of the subframe assembly. The subframe assembly is secured to the frame assembly at least in part by at least one pair of magnetic members such that the front side of the subframe assembly faces the back side of the frame assembly and the subframe assembly is at least partially positioned between the frame assembly and the wear&#39;s face. A first magnetic member of the at least one pair of magnetic members is a magnet that is secured to one of the frame assembly and the subframe assembly and a second magnetic member of the at least one pair of magnetic members is a magnet or a material that is attracted to a magnet and the second magnetic member being secured to the other of the frame assembly and the subframe assembly such that the first magnetic member and the second magnetic member are generally aligned when the subframe assembly is secured to the frame assembly.  
         [0015]     Another aspect of the present invention involves an eyeglass assembly comprising a frame assembly and a subframe assembly. The frame assembly comprises a front side and a back side with the back side being closer to a face of a wearer than the front side. The frame assembly further comprises a first brow bar, a second brow bar and a bridge connecting the first brow bar to the second brow bar. A first projection extends from the first brow bar and a second projection extends from the second brow bar. A first temple is connected to the first projection and a second temple connected to the second projection. The subframe assembly comprises a front side and a back side. The back side is closer to the face of a wearer than the front side. The subframe assembly further comprises a brow bar with a lens being secured to the brow bar. The subframe assembly is secured to the frame assembly such that the front side of the subframe assembly faces the back side of the frame assembly and such that the front side of the subframe assembly generally is positioned rearward of the front side of the frame assembly.  
         [0016]     A further aspect of the present invention involves a method of exchanging lenses in an eyewear system. The eyewear system comprises a first subframe assembly that comprises a first lens, a second subframe assembly that comprises a second lens, the second lens not being matched to the first lens, and a frame assembly that will accommodate individually both the first subframe assembly and the second subframe assembly. The method comprises releasing and removing the first subframe assembly from behind the frame assembly, placing the second subframe assembly behind the frame assembly and securing the second subframe assembly to the frame assembly.  
         [0017]     A further aspect of the present invention involves a method of exchanging lenses in an eyewear system. The eyewear system comprises a first subframe assembly that comprises a first lens and a second lens, and at least a second subframe assembly that comprises a different first lens and a different second lens, and a frame assembly that will accommodate individually each subframe assembly, which is not limited in number. In other words, three, four or more subframes can be used. The method comprises releasing and removing the first subframe assembly from behind the frame assembly, placing the second subframe assembly behind the frame assembly and securing the second subframe assembly to the frame assembly.  
         [0018]     An additional aspect of the present invention involves a method of exchanging frames in an eyewear system. The eyewear system comprises a first frame assembly that does not comprise a lens, a second frame assembly that does not comprise a lens, and a subframe assembly that comprises a lens where the subframe assembly is sized and configured to be accommodated within the first frame assembly and the second frame assembly. The method comprises releasing and removing the subframe assembly from behind the first frame assembly, placing the subframe assembly behind the second frame assembly and securing the subframe assembly to the second frame assembly. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0019]     These and other features, aspects and advantages of the present invention will now be described with reference to the drawings of several preferred embodiments. The illustrated embodiments are intended to illustrate and not to limit the invention. The drawings comprise the figures briefly described below.  
         [0020]      FIG. 1  is a front elevation view of a first eyewear assembly comprising a first frame and a first pair of lenses.  
         [0021]      FIG. 2  is a front elevation view of the first pair of lenses.  
         [0022]      FIG. 3  is a side elevation of the first eyewear assembly as presented in  FIG. 1 .  
         [0023]      FIG. 4  is a top plan view of the first eyewear assembly as presented in  FIG. 1 .  
         [0024]      FIG. 5  is a perspective view of a portion of the first eyewear assembly as presented in  FIG. 1  with the first pair of lenses shown removed from the first frame.  
         [0025]      FIG. 6  is a section view taken along the line  6 - 6  in  FIG. 4 .  
         [0026]      FIG. 7  is a front elevation view of a second eyewear assembly comprising a first frame and a first pair of lenses.  
         [0027]      FIG. 8  is a front elevation view of the first pair of lenses of the second eyewear assembly.  
         [0028]      FIG. 9  is a side elevation of the second eyewear assembly as presented in  FIG. 7 .  
         [0029]      FIG. 10  is a top plan view of the second eyewear assembly as presented in  FIG. 7 .  
         [0030]      FIG. 11  is a top plan view of the first pair of lenses as presented in  FIG. 7 .  
         [0031]      FIG. 12  is a top plan view of the first frame as presented in  FIG. 7 .  
         [0032]      FIG. 13  is a section view taken along the line  13 - 13  in  FIG. 12 .  
         [0033]      FIG. 14  is a front elevation view of a third eyewear assembly comprising a first frame and a first pair of lenses.  
         [0034]      FIG. 15  is a front elevation view of the first pair of lenses of the third eyewear assembly.  
         [0035]      FIG. 16  is a side elevation of the third eyewear assembly as presented in  FIG. 14 .  
         [0036]      FIG. 17  is a top plan view of the third eyewear assembly as presented in  FIG. 14 .  
         [0037]      FIG. 18  is a perspective view of a portion of the first pair of lenses as presented in  FIG. 14 .  
         [0038]      FIG. 19  is a perspective view of a portion of the first frame as presented in  FIG. 14 .  
         [0039]      FIG. 20  is a top plan view of a portion of the first pair of lenses as presented in  FIG. 14 .  
         [0040]      FIG. 21  is a top plan view of a portion of the first frame as presented in  FIG. 14 .  
         [0041]      FIG. 22  is a front elevation view of a fourth eyewear assembly comprising a first frame and a first pair of lenses.  
         [0042]      FIG. 23  is a front elevation view of the first pair of lenses of the fourth eyewear assembly.  
         [0043]      FIG. 24  is a side elevation of the fourth eyewear assembly as presented in  FIG. 22 .  
         [0044]      FIG. 25  is a top plan view of the fourth eyewear assembly as presented in  FIG. 22 .  
         [0045]      FIG. 26  is a perspective view of a portion of the fourth eyewear assembly as presented in  FIG. 22  with the first pair of lenses shown removed from the first frame.  
         [0046]      FIG. 27  is a front elevation view of a fifth eyewear assembly comprising a first frame and a first pair of lenses.  
         [0047]      FIG. 28  is a front elevation view of the first pair of lenses of the fifth eyewear assembly.  
         [0048]      FIG. 29  is a side elevation of the fifth eyewear assembly as presented in  FIG. 27 .  
         [0049]      FIG. 30  is a top plan view of the fifth eyewear assembly as presented in  FIG. 27 .  
         [0050]      FIG. 31  is a perspective view of a portion of the fifth eyewear assembly as presented in  FIG. 27  with the first pair of lenses shown removed from the first frame.  
         [0051]      FIGS. 32A and 32B  are a perspective view of a portion of the fifth eyewear assembly as presented in  FIG. 27  with the first pair of lenses shown installed on the first frame.  
         [0052]      FIG. 33  is a front elevation view of a sixth eyewear assembly comprising a first frame and a first pair of lenses.  
         [0053]      FIG. 34  is a front elevation view of the first pair of lenses of the sixth eyewear assembly.  
         [0054]      FIG. 35  is a side elevation of the sixth eyewear assembly as presented in  FIG. 33 .  
         [0055]      FIG. 36  is a top plan view of the sixth eyewear assembly as presented in  FIG. 33 .  
         [0056]      FIG. 37  is a perspective view of a portion of the sixth eyewear assembly as presented in  FIG. 33  with the first pair of lenses shown removed from the first frame.  
         [0057]      FIG. 38  is a perspective view of a portion of the sixth eyewear assembly as presented in  FIG. 33  with the first pair of lenses shown installed on the first frame.  
         [0058]      FIG. 39  is a front elevation view of a seventh eyewear assembly comprising a first frame and a pair of first lenses.  
         [0059]      FIG. 40  is a front elevation view of the pair of first lenses of the seventh eyewear assembly.  
         [0060]      FIG. 41A  is a perspective view of one of the first lenses being connected to the first frame of the seventh eyewear assembly as presented in  FIG. 39 .  
         [0061]      FIG. 41B  is a perspective view of the first lens showing in  FIG. 41A  after being rotated into position on the first frame of the seventh eyewear assembly as presented in  FIG. 39 .  
         [0062]      FIGS. 42A and 42B  illustrate in front view the fitting of the lens to the frame shown in  FIGS. 41A and 41B .  
         [0063]      FIG. 43  is a front elevation view of the first frame of the seventh eyewear assembly as presented in  FIG. 39 .  
         [0064]      FIG. 44  is a front elevation view of the pair of first lenses of the seventh eyewear assembly.  
         [0065]      FIG. 45  is a side elevation view of the seventh eyewear assembly.  
         [0066]      FIG. 46  is a perspective view of a portion of the seventh eyewear.  
         [0067]      FIG. 47  is a sectioned view taken along the line  47 - 47  in  FIG. 46 .  
         [0068]      FIG. 48  is a partially sectioned view of a portion of the seventh eyewear assembly showing a connection between one of the first lenses and the first frame.  
         [0069]      FIG. 49  is a front elevation view of an eighth eyewear assembly comprising a first frame and a first pair of lenses.  
         [0070]      FIG. 50  is a front elevation view of the first pair of lenses of the eighth eyewear assembly.  
         [0071]      FIG. 51  is a top plan view of the eighth eyewear assembly.  
         [0072]      FIG. 52  is a perspective view of a portion of the eighth eyewear assembly.  
         [0073]      FIGS. 53 and 54  illustrate in schematic fashion that a single pair of lenses can be used interchangeably with a plurality of frames to create some flexibility in eyewear fashion and function.  
         [0074]      FIG. 55  illustrates in schematic fashion that a single frame assembly can be used with a variety of different lens combinations. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0075]     Prior to describing each of the illustrated embodiments, some general comments are set forth. As shown in the drawings, various mechanisms can be provided by which a set of lenses can be removably connected to a frame assembly. In most embodiments of the present invention, the lens assembly will be mounted rearward of a front surface, and more preferably a rear surface, of the frame assembly. Desirably, the frame assembly will obscure at least a portion of the lens assembly. As such, certain features, aspects and advantages of the present invention can be used with eyeglasses, sunglasses, goggles, protective eyewear and the like.  
         [0076]     Thus, either the lenses can be replaced by other lenses relative to a single frame assembly or the frame assembly can be replaced by another frame assembly relative to the lenses or both. In one embodiment, auxiliary lenses can be placed behind the primary lenses such that magnifiers, sun lenses, corrective lenses or the like can be positioned behind a primary lens. As shown in  FIGS. 53 and 54 , a single set of lenses contained in a subframe assembly can be installed in any number of frame assemblies to provide completed eyewear.  FIG. 53  shows an arrangement with a mechanical interconnection between the subframe assembly and the frame assembly while  FIG. 54  shows an arrangement with a magnetic interconnection between the subframe assembly and the frame assembly.  FIG. 55  illustrates the use of a single frame assembly with subframe assemblies comprising blue lenses, brown lenses and clear lenses. Other lens variations also can be used. Configurations such as those shown in  FIGS. 53-55  will address the desires to use either a single set of lenses with multiple frames, a single frame with multiple sets of lenses or multiples sets of lenses with multiple frames.  
         [0077]     As used herein and as discussed in further detail below, the frame assembly preferably comprises a brow bar, a pair of temples and a bridge but other suitable frame assemblies also can be used. The frame can be made of any suitable material and in any suitable manner. Notably, the frame assembly advantageously is not provided with any lenses that are secured within optical openings of the frame assembly in any typical fashion.  
         [0078]     Instead, the lenses preferably are mounted in the sub-frame or in a pair of sub-frames that are independently mountable to the frame assembly. The sub-frame or sub-frames in the illustrated arrangements preferably do not feature temples or nose support pads. Instead, once mounted in the frame assembly, the frame assembly provides these components. In some embodiments, however, the frame assembly may be made without the temples and/or the nose support pads and these components can be mounted to the sub-frame or sub-frames. Such a construction, however, reduces the illusion of an integrated frame and lens assembly. The sub-frame preferably is of the semi-rimless variety to increase the number of frame assembly variations with which the sub-frame can be used. In some embodiments, the sub-frame can comprise a very narrow frame, however, the integrity of the frame assembly can become a concern in such embodiments.  
         [0079]     The illustrated embodiments depict two general types of interconnection techniques with which the subframe assembly can be secured to the frame assembly: magnetic interlock and mechanical interlock. A combination of a magnetic interlock and a mechanical interlock also can be used. While a few mechanical interlocking constructions are illustrated, a variety of other suitable types of interlocking constructions also can be used. In some arrangements, these mechanical interlocks can be snap-fit. With respect to the magnetic interlock, magnetic members are provided on at least one of the frame assembly or the lens assembly. The magnetic members can be a magnet or a material that is attracted to a magnet (e.g., a ferrous metal). Therefore, each pair of attracting magnetic members includes at least one magnetic member that is a magnet while the other magnetic member may be a magnet or a material that is attracted to a magnet. The magnetic members can have any suitable shape and size. The magnetic members can be embedded, recessed, positioned flush with or raised from the surface to which or in which the magnetic member is secured. Preferably, a pair of magnetic members is provided such that one of the pair is in or on the frame assembly and the other is in or on a corresponding region of the subframe assembly. The magnetic members can be attached in any suitable manner, including without limitation, embedding, adhering, or through the use of a sleeve or housing. In some embodiments, the frame assembly or the subframe assembly can include a component made of a magnetic member, such as a brow bar or the like. The magnetic members can be used to join the frame assembly to the subframe assembly regardless of whether there is direct contact between the paired magnetic members. Accordingly, “magnetically secured” means that the magnetic force between the respective magnetic members is sufficient to hold the subframe assembly in a usable position relative to the frame assembly.  
         [0080]     The specific illustrated embodiments now will be described, beginning with the embodiment illustrated in  FIGS. 1-6 . In the arrangement of  FIGS. 1-6 , the eyewear  100  generally comprises a frame assembly  102  and a lens subframe assembly  104  (see, for example,  FIG. 2 ). As introduced above, the lens subframe assembly  104  preferably is mountable to the frame assembly  102  rearward of the frame assembly  102  such that at least a portion of the lens subframe assembly  104  will be positioned between the frame assembly  102  and the eye of a wearer. As used herein, the term rearward means on the side adjacent the eyes and forward means in the opposite direction.  
         [0081]     The frame assembly  102  preferably comprises a brow bar  110 , a pair of temples  112  and a bridge  114 . The brow bar  110  and the temples  112  can be connected in any suitable manner. In the arrangement illustrated in  FIGS. 1 and 3 , corresponding hinges  116  connect the temples  112  to the brow bar  110 . More particularly, projections  118  extend from the brow bar  110  and the hinges  116  connect the brow bar  110  to the projections  118 . Other suitable configurations can be used.  
         [0082]     The bridge  114  extends in a region generally corresponding to the region between the eyes of a user. In the illustrated arrangement, the brow bar  110  actually is formed in two portions that are connected by the bridge  114 . Other suitable configurations can be used including, but not limited to, a brow bar that forms at least a portion of, or, in some embodiments, the entirety of, the bridge  114 . Any of the above described components of the frame assembly  102  may be omitted or integrated with other components in some embodiments. For instance, the temples  112  can be omitted where other technology or other structure is used to secure the eyewear in position in the proximity of the user&#39;s eyes. The frame assembly  102  also can comprise other structures, such as nose pads and the structures that connect the nose pads to the rest of the frame assembly  102 .  
         [0083]     With reference now to  FIG. 2 , the lens subframe assembly  104  in the arrangement of  FIGS. 1-6  comprises a pair of lenses  120 . A brow bar  122  and a bridge  124  combine in the illustrated arrangement to define a rigid frame structure of the lens subframe assembly  104 . Preferably, the brow bar  122  and the bridge  124  have a smaller profile in front view such that the brow bar  122  and the bridge  124  of the subframe assembly  104  can be concealed by the brow bar  110  and the bridge  114  of the frame assembly  102 , as shown by the hidden lines in  FIG. 1 .  
         [0084]     The subframe assembly  104  preferably is of the rimless or semirimless variety. Such an arrangement increases the number of alternative frame constructions that can be used as the frame assembly while allowing the presence of the subframe assembly  104  to be masked. In the arrangement of  FIGS. 1-6 , the subframe assembly  104  comprises a lower nylon cord  126  that secures the lenses  120  to the brow bar  122 . Other manners of securing the lenses  120  within or to the subframe assembly  104  can be used. For instance, in some arrangements, the lenses  120  can be secured with clamps, mechanical fasteners, threaded fasteners, encircling frames, eyewires or the like.  
         [0085]     As described above, the subframe assembly  104  advantageously mounts to the frame assembly  102  in a manner that provides an appearance of integrated eyewear rather than removably connected lenses and frames. As such, in the illustrated arrangement, the subframe assembly  104  mounts behind the frame assembly  102  and the mounting structures are positioned behind the frame assembly  102  such that the mounting structures are generally obscured from the sight of one viewing the frame assembly  102  from the front.  
         [0086]     With reference to  FIGS. 4 and 6 , the bridge  124  of the subframe assembly  104  is positioned behind the bridge  114  of the frame assembly  102 . A flange  130  extends rearward from the bridge  114  of the illustrated frame assembly  102 . The flange can have any suitable configuration. Desirably, the flange  130  is configured to have a vertical dimension that is the same as or less than a vertical dimension of the bridge  114  of the frame assembly  102 . The flange  130  in the illustrated arrangement comprises a wire-type of member that extends rearward and curves upward to define a hook. The flange  130  has an offset that is slightly larger than the thickness of the bridge  124  of the subframe assembly  124 . The bridge  124  of the subframe assembly  104  can be placed in a valley  132  defined between the flange  130  and the bridge  114  of the frame assembly  102 . In a presently preferred configuration, the bridge  124  is supported by the flange  130 . In other configurations, the flange  130  can be omitted or the bridge is not supported by the flange  130 . Using the flange  130  to support the bridge  124  increases the structural integrity and facilitates the fitting of the subframe assembly  104  to the frame assembly  102 .  
         [0087]     With reference to  FIGS. 4 and 5 , an outer portion of the illustrated subframe assembly  104  comprises lugs  134  that extend laterally outward from the brow bars  122 . The lugs  134  are sized and configured to abut upon bosses  136  defined on the frame assembly  102 . The bosses  136  can be integrally formed with the frame assembly  102  or, as in the illustrated arrangement, can be separate components that are secured to the frame assembly. In the illustrated arrangement, the bosses  136  advantageously are positioned behind the projections  118  such that the bosses  136  are generally concealed as are the lugs  134  when the lugs  134  abut the bosses  136 . Moreover, in the illustrated arrangement, the bosses  136  support the lugs  134  such that the frame assembly  102  supports the outer portions of the subframe assembly  104 . In some arrangements, the bosses  136  can be positioned above or to one side of the lugs  134  and interlocking configurations can be used to connect the two components.  
         [0088]     With continued reference to  FIG. 5 , the illustrated lugs  134  comprise a lower lip  140 . The lower lip  140  preferably is sized and configured to abut a surface of the respective boss  136 . That is, the lower lip  140  helps secure the lug  134  to the boss  136 . To further secure the lug  134  and the boss  136  together, the eyewear  100  comprises interconnecting components. More particularly, in the illustrated arrangement, the eyewear  100  comprises a magnetic interlock comprising at least one magnetic member. Even more particularly, the magnetic interlock is formed by each lug and boss combination and comprises a first magnetic member  142  and a second magnetic member  144 . In some configurations, one of the magnetic members  142 ,  144  may be slightly recessed and the other of the magnetic members  142 ,  144  may extend into the recess to define a mechanical interlock in addition to defining a magnetic interlock. Other suitable configurations also can be used. Also, the magnetic members  142 ,  144  can have any desired orientation relative to each other. In other words, while the illustrated arrangement features the first magnetic member  142  being positioned above the second magnetic member  144 , other arrangements can place the first magnetic member  142  to any side of the second magnetic member  144  or can place the first magnetic member  142  below the second magnetic member  144 .  
         [0089]     In use, the illustrated frame assembly  102  generally defines the components associated with most eyewear: the brow bar  110 , the bridge  114  and the temples  112 . In some arrangements, such as the illustrated arrangement, the frame assembly  102  also comprises nose pads. To provide the lenses, a user slips the subframe assembly  104  behind the frame assembly  102  with the bridge  124  of the subframe assembly  104  slipping into the valley  132  while the lugs  134  are brought into abutment with the bosses  136 . In such a position, the lugs  134  and the bridge  124  of the subframe assembly are generally concealed from the front of the eyewear and the lenses  120  that are positioned in the subframe assembly  104  appear to be part of the frame assembly  102 . Nonetheless, when the user desires, the lenses  120  and the subframe assembly  104  can be lifted from behind the frame assembly  102  and an alternative set of lenses and subframe assembly can be placed in the frame assembly  102  or the lenses  120  and the subframe assembly  104  can be placed in an alternative frame assembly.  
         [0090]     With reference now to  FIGS. 7-13 , another arrangement of eyewear  200  generally comprises a frame assembly  202  and a lens subframe assembly  204  (see, for example,  FIG. 8 ). The lens subframe assembly  204  preferably is mountable to the frame assembly  202  rearward of the frame assembly  202  such that at least a portion, and preferably the majority, of the lens subframe assembly  204  will be positioned between the frame assembly  202  and the head of a wearer.  
         [0091]     The frame assembly  202  preferably comprises a brow bar  210 , a pair of temples  212  (see  FIG. 9 ) and a bridge  214 . The brow bar  210  and the temples  212  can be connected in any suitable manner. In the arrangement illustrated in  FIGS. 1 and 3 , corresponding hinges  216  connect the temples  212  to the brow bar  210 . More particularly, projections  218  extend from the brow bar  210  and the hinges  216  connect the brow bar  210  to the projections  218 . Other suitable configurations can be used.  
         [0092]     The bridge  214  extends in a region generally corresponding to the region between the eyes of a user. In the illustrated arrangement, the brow bar  210  is formed in two portions that are connected by the bridge  214 . Other suitable configurations can be used, including but not limited to, a brow bar that forms at least a portion of, or, in some embodiments, the entirety of, the bridge  214 . The above described components of the frame assembly  202  may be omitted or integrated with other components in some embodiments. For instance, the temples  212  can be omitted where other technology or other structure is used to secure the eyewear in position in the proximity of the user&#39;s eyes and the hinges  216  can be omitted in some configurations.  
         [0093]     With reference now to  FIG. 8 , the lens subframe assembly  204  in the arrangement of  FIGS. 7-13  comprises a pair of lenses  220 . A brow bar  222  and a bridge  224  combine in the illustrated arrangement to define a rigid frame structure of the lens subframe assembly  204 . Preferably, the brow bar  222  and the bridge  224  have a smaller profile in front view such that the brow bar  222  and the bridge  224  of the subframe assembly  204  can be substantially concealed by the brow bar  210  and the bridge  214  of the frame assembly  202 , as shown by the hidden lines in  FIG. 7 .  
         [0094]     The subframe assembly  204  preferably is of the rimless or semirimless variety. Such an arrangement increases the number of alternative frame constructions that can be used as the frame assembly while allowing the presence of the subframe assembly  204  to be masked. In the arrangement of  FIGS. 7-13 , the subframe assembly  204  comprises a lower nylon cord  226  that secures the lenses  220  to the brow bar  222 . Other manners of securing the lenses  220  within or to the subframe assembly  204  can be used. For instance, in some arrangements, the lenses  220  can be secured with clamps, mechanical fasteners, threaded fasteners, encircling frames, eyewires or the like.  
         [0095]     As described above, the subframe assembly  204  advantageously mounts to the frame assembly  202  in a manner that provides an appearance of integrated eyewear rather than an appearance of removably connected lenses and frames. As such, in the illustrated arrangement, the subframe assembly  204  mounts behind the frame assembly  202  and the mounting structures are positioned behind the frame assembly  202  such that the mounting structures are generally obscured from the sight of one viewing the frame assembly  202  from the front.  
         [0096]     With reference to  FIG. 10 , the bridge  224  of the subframe assembly  204  is positioned behind the bridge  214  of the frame assembly  202 . A protrusion  230  extends rearward from the bridge  214  of the frame assembly  202 . In some arrangements, more than one protrusion  230  can extend rearward from the bridge  214 . The protrusion  230  can have any suitable configuration. Desirably, the protrusion  230  is configured to have a vertical dimension that is the same as or less than a vertical dimension of the bridge  214  of the frame assembly  202 .  
         [0097]     The protrusion  230  in the illustrated arrangement comprises a shelf-like structure with a lip  231  that extends slightly upward at a rear portion of the protrusion  230 . Accordingly, the protrusion  230  can be said to define a hook. The lip  231  of the protrusion  230  is offset from the rear of the bridge  214  a distance that is slightly larger than the thickness of the bridge  224  of the subframe assembly  224 . The bridge  224  of the subframe assembly  204  can be placed in a valley  232  defined between the lip  231  and the bridge  214  of the frame assembly  202 . In a presently preferred configuration, the bridge  224  is supported by the protrusion  230 .  
         [0098]     With continued reference to  FIGS. 11 and 12 , the bridge  224  of the illustrated subframe assembly  204  comprises interlocking components. While the lip  231  defines one type of interlocking component, the illustrated arrangement also features a magnetic interlock comprising at least one magnetic member. Even more particularly, the magnetic interlock is formed by placing a magnetic member in at least one of the bridge  214  and the protrusion  230 . In some configurations, such as the illustrated configuration, at least one first magnetic member  242  is placed in the bridge  214  and at least one second magnetic member  244  is placed in the protrusion  230 . In some configurations, one of the magnetic members  242 ,  244  may be slightly recessed and the other of the magnetic members  242 ,  244  may extend into the recess to define a mechanical interlock in addition to defining a magnetic interlock. Other suitable configurations also can be used. For instance, the bridge  224  can be connected to a bottom surface or side surface of the protrusion  230  or the bridge  214  in some configurations and the magnetic interlock can be suitably disposed for such a connection.  
         [0099]     In use, the illustrated frame assembly  202  generally defines the components associated with most eyewear: the brow bar  210 , the bridge  214  and the temples  212 . To provide the lenses, a user slips the subframe assembly  204  behind the frame assembly  202  with the bridge  224  of the subframe assembly  204  slipping into the valley  232 . In such a position, the bridge  224  of the subframe assembly is generally concealed from the front of the eyewear and the lenses  220  that are positioned in the subframe assembly  204  appear to be part of the frame assembly  202 . Nonetheless, when the user desires, the lenses  220  and the subframe assembly  204  can be lifted from behind the frame assembly  202  and an alternative set of lenses and subframe assembly can be placed in the frame assembly  202  or the lenses  220  and the subframe assembly  204  can be placed in an alternative frame assembly.  
         [0100]     With reference now to  FIGS. 14-21 , another configuration of eyewear  300  arranged and configured in accordance with certain features, aspects and advantages of the present invention is illustrated. As illustrated, this arrangement comprises a frame assembly  302  and a subframe assembly  304  connectable together in a manner that combines portions of the arrangements shown in and described with reference to  FIGS. 1-6  and  FIGS. 7-13 .  
         [0101]     As illustrated, a bridge  324  of the subframe assembly  304  is constructed to be mounted to a protrusion  330  that extends from a bridge  314  of the frame assembly  302 . Thus, this interconnection between the frame assembly  302  and the subframe assembly  304  can be substantially as that described with respect to the eyewear  200  of  FIGS. 7-13 .  
         [0102]     Moreover, as illustrated, the subframe assembly comprises lugs  334  and the frame assembly comprises bosses  336 . These components can be substantially as that described with respect to the eyewear  100  of  FIGS. 1-6 .  
         [0103]     Because these components have been described above, further is deemed unnecessary and duplicative. Where desired or appropriate, any of the variations described above also can be used with the embodiment of  FIGS. 14-21 .  
         [0104]     With reference now to  FIGS. 22-26 , another arrangement of eyewear  400  generally comprises a frame assembly  402  and a lens subframe assembly  404  (see, for example,  FIG. 23 ). The lens subframe assembly  404  preferably is mountable to the frame assembly  402  rearward of the frame assembly  402  such that at least a portion, and preferably the majority, of the lens subframe assembly  404  will be positioned between the frame assembly  402  and the head of a wearer.  
         [0105]     The frame assembly  402  preferably comprises a brow bar  410 , a pair of temples  412  (see  FIG. 24 ) and a bridge  414 . The brow bar  410  and the temples  412  can be connected in any suitable manner. In the arrangement illustrated in  FIGS. 22 and 24 , corresponding hinges  416  connect the temples  412  to the brow bar  410 . More particularly, projections  418  extend from the brow bar  410  and the hinges  416  connect the brow bar  410  to the projections  418 . Other suitable configurations can be used.  
         [0106]     The bridge  414  extends in a region generally corresponding to the region between the eyes of a user. In the illustrated arrangement, the brow bar  410  is formed in two portions that are connected by the bridge  414 . Other suitable configurations can be used, including but not limited to, a brow bar that forms at least a portion of, or, in some embodiments, the entirety of, the bridge  414 . The above described components of the frame assembly  402  may be omitted or integrated with other components in some embodiments. For instance, the temples  412  can be omitted where other technology or other structure is used to secure the eyewear in position in the proximity of the user&#39;s eyes and the hinges  416  can be omitted in some configurations.  
         [0107]     With reference now to  FIG. 2 , the lens subframe assembly  404  in the arrangement of  FIGS. 22-26  comprises a pair of lenses  420 . A brow bar  422  and a bridge  424  combine in the illustrated arrangement to define a rigid frame structure of the lens subframe assembly  404 . Preferably, the brow bar  422  and the bridge  424  have a smaller profile in front view than the brow bar  410  and bridge  414  of the frame assembly  402  such that the brow bar  422  and the bridge  424  of the subframe assembly  404  can be substantially concealed by the brow bar  410  and the bridge  414  of the frame assembly  402 , as shown by the hidden lines in  FIG. 22 .  
         [0108]     The subframe assembly  404  preferably is of the rimless or semirimless variety. Such an arrangement increases the number of alternative frame constructions that can be used as the frame assembly  402  while allowing the presence of the subframe assembly  404  to be masked. In the arrangement of  FIGS. 22-26 , the subframe assembly  404  comprises a lower nylon cord  426  that secures the lenses  420  to the brow bar  422 . Other manners of securing the lenses  420  within or to the subframe assembly  404  can be used. For instance, in some arrangements, the lenses  420  can be secured with clamps, mechanical fasteners, threaded fasteners, encircling frames, eyewires or the like.  
         [0109]     As described above, the subframe assembly  404  advantageously mounts to the frame assembly  402  in a manner that provides an appearance of integrated eyewear rather than removably connected lenses and frames. As such, in the illustrated arrangement, the subframe assembly  404  mounts behind the frame assembly  402  and the mounting structures are positioned behind the frame assembly  402  such that the mounting structures are generally obscured from the sight of one viewing the frame assembly  402  from the front.  
         [0110]     With reference to  FIG. 25 , the bridge  424  of the subframe assembly  404  is positioned behind the bridge  414  of the frame assembly  402 . A flange  430  extends rearward from the bridge  414  of the frame assembly  402 . The flange  430  can have any suitable configuration and can be configured to cooperate with the bridge  424  as described above with respect to the eyewear  100  of  FIGS. 1-6  and the eyewear  200  of  FIGS. 7-13 .  
         [0111]     With reference to  FIGS. 22 and 26 , an outer portion of the subframe assembly  404  comprises lugs  434  that extend laterally outward from the brow bars  422 . The lugs  434  are sized and configured to abut upon bosses  436  defined on the frame assembly  102 . The bosses  436  can be integrally formed with the frame assembly  402  or, as in the illustrated arrangement, can be separate components that are secured to the frame assembly and project rearwardly therefrom. In the illustrated arrangement, the bosses  436  advantageously are positioned behind the projections  418  such that the bosses  436  are generally concealed as are the lugs  434  when the lugs  434  abut the bosses  436 . The lugs  434  can be positioned in any desired orientation relative to the bosses  436  and interlocking configurations can be used to connect the two components.  
         [0112]     In the illustrated arrangement, the bosses  436  generally comprise magnetic members that are positioned in the projections  418  and the bosses comprise interconnecting components together with the lugs  434 . More particularly, in the illustrated arrangement, the eyewear  100  comprises a magnetic interlock comprising at least one magnetic member. Even more particularly, the magnetic interlock is formed at each lug and boss combination and comprises a first magnetic member  442  and a second magnetic member  444 . In some configurations, one of the magnetic members  442 ,  444  may be slightly recessed and the other of the magnetic members  442 ,  444  may extend into the recess to define a mechanical interlock in addition to defining a magnetic interlock. Other suitable configurations also can be used.  
         [0113]     In use, the illustrated frame assembly  402  generally defines the components associated with most eyewear: the brow bar  410 , the bridge  414  and the temples  412 . To provide the lenses  420 , a user slips the subframe assembly  404  behind the frame assembly  402  with the bridge  424  of the subframe assembly  404  slipping into the valley defined by the flange  430  while the lugs  434  are brought into abutment with the bosses  436 . In such a position, the lugs  434  and the bridge  424  of the subframe assembly  404  are generally concealed from the front of the eyewear and the lenses  420  that are positioned in the subframe assembly  404  appear to be part of the frame assembly  402 . Nonetheless, when the user desires, the lenses  420  and the subframe assembly  404  can be lifted from behind the frame assembly  402  and an alternative set of lenses and subframe assembly can be placed in the frame assembly  402  or the lenses  420  and the subframe assembly  404  can be placed in an alternative frame assembly.  
         [0114]     With reference now to  FIGS. 27-32B , another arrangement of eyewear  500  generally comprises a frame assembly  502  and a lens subframe assembly  504  (see, for example,  FIG. 28 ). The lens subframe assembly  504  preferably is mountable to the frame assembly  502  rearward of the frame assembly  502  such that at least a portion, and preferably the majority, of the lens subframe assembly  504  will be positioned between the frame assembly  502  and the face of a wearer.  
         [0115]     The frame assembly  502  preferably comprises a brow bar  510 , a pair of temples  512  (see  FIG. 29 ) and a bridge  514 . The brow bar  510  and the temples  512  can be connected in any suitable manner. In the arrangement illustrated in  FIGS. 29 and 30 , corresponding hinges  516  connect the temples  512  to the brow bar  510 . More particularly, projections  518  extend from the brow bar  510  and the hinges  516  connect the brow bar  510  to the projections  518 . Other suitable configurations can be used.  
         [0116]     The bridge  514  extends in a region generally corresponding to the region between the eyes of a user. In the illustrated arrangement, the brow bar  510  is formed in two portions that are connected by the bridge  514 . Other suitable configurations can be used, including but not limited to, a brow bar that forms at least a portion of, or, in some embodiments, the entirety of, the bridge  514 . The above described components of the frame assembly  502  may be omitted or integrated with other components in some embodiments. For instance, the temples  512  can be omitted where other technology or other structure is used to secure the eyewear in position in the proximity of the user&#39;s eyes and the hinges  516  can be omitted in some configurations.  
         [0117]     With reference now to  FIG. 28 , the lens subframe assembly  504  in the arrangement of  FIGS. 27-32B  comprises a pair of lenses  520 . A brow bar  522  and a bridge  524  combine in the illustrated arrangement to define a rigid frame structure of the lens subframe assembly  504 . Preferably, the brow bar  522  and the bridge  524  have a smaller profile in front view than the brow bar  510  and the bridge  514  of the frame assembly  502  such that the brow bar  522  and the bridge  524  of the subframe assembly  504  can be substantially concealed by the brow bar  510  and the bridge  514  of the frame assembly  502 , as shown by the hidden lines in  FIG. 27 .  
         [0118]     The subframe assembly  504  preferably is of the rimless or semirimless variety. Such an arrangement increases the number of alternative frame constructions that can be used as the frame assembly while allowing the presence of the subframe assembly  504  to be masked. In the arrangement of  FIGS. 27-32B , the subframe assembly  504  comprises a lower nylon cord  526  that secures the lenses  520  to the brow bar  522 . Other manners of securing the lenses  520  within or to the subframe assembly  504  can be used. For instance, in some arrangements, the lenses  520  can be secured with clamps, mechanical fasteners, threaded fasteners, encircling frames, eyewires or the like.  
         [0119]     As described above, the subframe assembly  504  advantageously mounts to the frame assembly  502  in a manner that provides an appearance of integrated eyewear rather than an appearance of removably connected lenses and frames. As such, in the illustrated arrangement, the subframe assembly  504  mounts behind the frame assembly  502  and the mounting structures are positioned behind the frame assembly  502  such that the mounting structures are generally obscured from the sight of one viewing the frame assembly  502  from the front.  
         [0120]     With reference to  FIG. 10 , the bridge  524  of the subframe assembly  504  is positioned behind the bridge  514  of the frame assembly  502 . In the illustrated arrangement, the bridge  524  of the subframe assembly  504  is not directly supported by any structure associated with the frame assembly  502 . In other arrangements, the bridge  524  may be supported.  
         [0121]     With reference to  FIGS. 31, 32A  and  32 B, the subframe assembly  504  generally comprises a locking tab  560  that extends forward from the subframe assembly  504 . The illustrated tab  560  comprises an N-shaped configuration but can comprise any suitable configuration in other arrangements, including a V-shape or a W-shape configuration. The tab  560  also comprises a clip portion  562  that is defined between a main body  564  and a finger hold  566  of the tab.  
         [0122]     The frame assembly  502  preferably comprises a receptacle  570 . The receptacle  570  defines an aperture  572  sized and configured to accept at least a portion of the tab  560 . The illustrated aperture  572  is generally square or rectangular with a slot  573  defined along one side. As illustrated in  FIG. 32B , the slot  573  receives the clip portion  562  of the tab  560  when the tab  560  is fully positioned within the receptacle  570 . In other words, a shoulder that is defined at approximately the clip portion  562  is captured within the receptacle while the clip portion  562  is positioned in the slot  573  of the aperture  572  with the finger hold  566  protruding from the receptacle  570 .  
         [0123]     Thus, in the illustrated arrangement, the tab  560  and the receptacle  570  define a mechanical interlock. The tab  560  can be positioned on either one of the frame assembly  502  and the subframe assembly  504  while the receptacle  570  is positioned on the other. Positioning the tab  560  on the subframe assembly  504 , however, allows easier removal of the subframe assembly  504  from the frame assembly  502 .  
         [0124]     In use, the illustrated frame assembly  502  generally defines the components associated with most eyewear: the brow bar  510 , the bridge  514  and the temples  512 . To provide the lenses, a user slips the subframe assembly  504  behind the frame assembly  502  with the tab  560  being inserted into the receptacle  570  of the frame assembly  502 . In such a position, the bridge  524  of the subframe assembly  504  is generally concealed from the front of the eyewear and the lenses  520  that are positioned in the subframe assembly  504  appear to be part of the frame assembly  502 . Nonetheless, when the user desires, the lenses  520  and the subframe assembly  504  can be removed from behind the frame assembly  502  and an alternative set of lenses and subframe assembly can be placed in the frame assembly  502  or the lenses  520  and the subframe assembly  504  can be placed in an alternative frame assembly.  
         [0125]     With reference now to  FIGS. 33-38 , another configuration of eyewear  600  arranged and configured in accordance with certain features, aspects and advantages of the present invention is illustrated. As illustrated, this arrangement comprises a frame assembly  602  and a subframe assembly  604  connectable together in a manner similar to that shown in  FIGS. 27-32B . The portions that are the same as the arrangements described above will not be described in this embodiment.  
         [0126]     As illustrated, a tab  660  and a receptacle  670  provide a mechanical interlock. The tab  660  differs from the tab  560  described above in that the tab  660  comprises a bulge  662  that is received within the receptacle  670  to lock the tab  660  into the receptacle. As such, the receptacle can have a generally square or rectangular aperture  672  without the need for a slot such as that shown in  FIG. 31 . The bulge  662  can be pushed into the receptacle  670  through the aperture  672 . To remove the tab  660  from the receptacle, a finger hold  666  can be depressed which results in movement of the bulge into a position that allows the tab  660  to be withdrawn from the receptacle  670 .  
         [0127]     With reference now to  FIGS. 39-48 , another arrangement of eyewear  700  generally comprises a frame assembly  702  and a pair of lens subframe assemblies  704  (see  FIG. 44 ). Each of the lens subframe assemblies  704  preferably is mountable to the frame assembly  702  rearward of the frame assembly  702  such that at least a portion, and preferably the majority, of the lens subframe assembly  704  will be positioned between the frame assembly  702  and the eye of a wearer.  
         [0128]     The frame assembly  702  preferably comprises a brow bar  710 , a pair of temples  712  (see  FIG. 40 ) and a bridge  714 . The brow bar  710  and the temples  712  can be connected in any suitable manner. In the arrangement illustrated in  FIG. 40 , corresponding hinges  716  connect the temples  712  to the brow bar  710 . More particularly, projections  718  extend from the brow bar  710  and the hinges  716  connect the brow bar  710  to the projections  718 . Other suitable configurations can be used.  
         [0129]     The bridge  714  extends in a region generally corresponding to the region between the eyes of a user. In the illustrated arrangement, the brow bar  710  is formed in two portions that are connected by the bridge  714 . Other suitable configurations can be used including but not limited to a brow bar that forms at least a portion, or, in some embodiments, the entirety of, the bridge  714 . The above described components of the frame assembly  702  may be omitted or integrated with other components in some embodiments. For instance, the temples  712  can be omitted where other technology or other structure is used to secure the eyewear in position in the proximity of the user&#39;s eyes and the hinges  716  can be omitted in some configurations.  
         [0130]     With reference now to  FIGS. 41A-42B , each of the lenses  720  is secured to the frame assembly  702  with a separate lens subframe assembly  704 . Thus, the lens subframes do not comprise a bridge in this arrangement. The lens subframe assembly  704  comprises a version of a brow bar  722  to which the lens  720  is secured. The brow bar  722  desirably has a smaller profile in front view than the brow bar  710  of the frame assembly  702  such that the brow bar  722  of the subframe assembly  704  can be substantially concealed by the brow bar  710  of the frame assembly  702 , as shown by the hidden lines in  FIG. 39 .  
         [0131]     The subframe assemblies  704  preferably are of the rimless or semirimless variety. Such an arrangement increases the number of alternative frame constructions that can be used as the frame assembly while allowing the presence of the subframe assemblies  704  to be masked. In the one configuration, the subframe assembly  704  comprises a lower nylon cord  726  that secures the lenses  720  to the brow bar  722  of the subframe assembly  704 . Other manners of securing the lenses  720  within or to the subframe assembly  704  can be used. For instance, in some arrangements, the lenses  720  can be secured with clamps, mechanical fasteners, threaded fasteners, encircling frames, eyewires or the like.  
         [0132]     As described above, the subframe assembly  704  advantageously mounts to the frame assembly  702  in a manner that provides an appearance of integrated eyewear rather than an appearance of removably connected lenses and frames. As such, in the illustrated arrangement, the subframe assembly  704  mounts behind the frame assembly  702  and the mounting structures are positioned behind the frame assembly  702  such that the mounting structures are generally obscured from the sight of one viewing the frame assembly  702  from the front.  
         [0133]     With reference to  FIG. 39 , the illustrated subframe assemblies  704  are secured to the frame assembly  702  at in two locations. In one arrangement, such as the illustrated arrangement, the subframe assemblies  704  are secured at both lateral ends of the subframe assemblies  704 . In a presently preferred configuration, one end of the subframe assembly  704  is secured by a mechanical interlock while the other end is secured by a magnetic interlock.  
         [0134]     With reference now to  FIGS. 41A-42B , one form of the mechanical interlock between the subframe assembly  704  and the frame assembly  702  will be described. As illustrated, the frame assembly comprises an oblong post  780 . The oblong post  780  extends rearward from the frame assembly  702  and preferably has a major diameter that extends generally vertically and a minor diameter that extends generally laterally. Other shapes and configurations of the post can be used and the post can be placed on the subframe assembly  704  in some configurations. Moreover, in one preferred arrangement, an enlarged head  781  (shown in dashed lines in  FIGS. 41A and 41B ) is provided on the post  780  such that a major portion of the post  780  has a smaller cross-section than the head. In some particularly advantageous embodiments, the post comprises a magnetic member.  
         [0135]     The subframe assembly  704  preferably comprises a slot  782  that is defined within an ear  784 . In some particularly advantageous embodiments, the ear  784  comprises a magnetic member that can be magnetically secure to the post  780 . A portion of the slot  782  preferably is oblong such that the post  780  can be inserted and the lens rotated into a locked position. As with the post, other configurations can be used and the slot can be disposed on the frame assembly  702  in some configurations. As shown in  FIG. 41A , the slot  782  can slid onto the post  780  and the subframe assembly  704  can be rotated to lock the subframe assembly  704  to the frame assembly  702 , as shown in  FIG. 41B .  
         [0136]     With reference to  FIGS. 39, 40  and  48 , lugs  734  can be an outer portion of the illustrated subframe assembly  704  comprises lugs  734  that extend laterally outward from the brow bars  722 . The lugs  734  are sized and configured to abut upon bosses  736  defined on the frame assembly  702 . The bosses  736  can be integrally formed with the frame assembly  702  or can be separate components that are secured to the frame assembly  702 . In the illustrated arrangement, the bosses  736  advantageously are positioned behind the projections  718  such that the bosses  736  are generally concealed as are the lugs  734  when the lugs  734  abut the bosses  736 .  
         [0137]     In the illustrated arrangement, the bosses  736  generally comprise magnetic members that are positioned in the projections  718  and the bosses  736  comprise interconnecting components together with the lugs  734 . More particularly, in the illustrated arrangement, the eyewear  700  comprises a magnetic interlock comprising at least one magnetic member. Even more particularly, the magnetic interlock is formed at each lug and boss combination and comprises a first magnetic member  742  and a second magnetic member  744 . In some configurations, one of the magnetic members  742 ,  744  may be slightly recessed and the other of the magnetic members  742 ,  744  may extend into the recess to define a mechanical interlock in addition to defining a magnetic interlock. Other suitable configurations also can be used. Moreover, the post  780  and the ear  784  can be interchanged in location with the boss  736  and the lug  734  in some applications.  
         [0138]     With reference to  FIGS. 41A and 47 , a post  790  of the nose piece  792  can comprise a reduced portion  794 . The reduced portion  794  can accommodate a portion of either the lens  720  or the subframe assembly  704  such that the reduced portion  794  can serve to locate the lens  720  relative to the frame assembly  702  and provide another member that helps lock the subframe assembly  704  in position.  
         [0139]     In use, the illustrated frame assembly  702  generally defines the components associated with most eyewear: the brow bar  710 , the bridge  714  and the temples  712 . To provide the lenses, a user slips the subframe assembly  704  behind the frame assembly  702  and slips the post  780  into the slot  782  of the ear  784 . The subframe assembly  704  is then rotated about 90 degrees and the lug  734  is brought into engagement with the boss  736  such that the subframe assembly  704  is supported in a generally locked position relative to the frame assembly  702 . The other lens  720  can be installed to the frame assembly  702  in the same manner. In such a position, the subframe assembly  704  is generally concealed from the front of the eyewear and the lenses  720  that are positioned in the subframe assembly  704  appear to be part of the frame assembly  702 . Nonetheless, when the user desires, the lenses  720  and the subframe assemblies  704  can be removed from behind the frame assembly  702  and an alternative set of lenses and subframe assemblies can be placed in the frame assembly  702  or the lenses  720  and the subframe assemblies  704  can be placed in an alternative frame assembly.  
         [0140]     With reference now to  FIGS. 49-52 , an eyewear assembly  800  is shown. The eyewear assembly  800  features a frame assembly  802  to which a subframe assembly  804  can be mounted. Because of the similarity to the arrangements described above, many of the base components of the frame assembly  802  and the subframe assembly  804  will not be described in further detail. Rather, reference may be had to the descriptions set forth above for such components. For instance, the frame assembly  802  is very similar to the frame assembly  702  described with reference to  FIGS. 39-48 .  
         [0141]     A primary difference between the prior embodiment and the embodiment of  FIGS. 49-50  is the use of a single subframe assembly  804 . The subframe assembly  804  comprises a bridge  824  that connects a pair of brow bars  822 . The bridge  824  in the illustrated arrangement comprises a pair of slots  882  that can receive a corresponding pair of posts  870 . The posts can be configured in any suitable manner, including the manners set forth in the embodiment above. The slots  882  and the posts  870  define a mechanical interlock between the frame assembly  802  and the subframe assembly  804 .  
         [0142]     As with the arrangement described directly above, a magnetic interlock also is provided. Any suitable construction can be used and, in the illustrated arrangement, the magnetic interlock is the same as the arrangement in the embodiment described directly above. Accordingly, a pair of lugs  834  is positioned on an outer portion of the illustrated subframe assembly  804 . The lugs  834  are sized and configured to abut upon bosses  836  defined on the frame assembly  802 . The bosses  836  can be integrally formed with the frame assembly  802  or can be separate components that are secured to the frame assembly  802 . In the illustrated arrangement, the bosses  836  advantageously are positioned behind projections  818  such that the bosses  836  are generally concealed as are the lugs  834  when the lugs  834  abut the bosses  836 .  
         [0143]     In the illustrated arrangement, the bosses  836  generally comprise magnetic members that are positioned in the projections  818  and the bosses  836  comprise interconnecting components together with the lugs  834 . More particularly, in the illustrated arrangement, the eyewear  800  comprises a magnetic interlock comprising at least one magnetic member. Even more particularly, the magnetic interlock is formed at each lug and boss combination and comprises a first magnetic member  842  and a second magnetic member  844 . In some configurations, one of the magnetic members  842 ,  844  may be slightly recessed and the other of the magnetic members  842 ,  844  may extend into the recess to define a mechanical interlock in addition to defining a magnetic interlock. Other suitable configurations also can be used. Moreover, the posts  880  and slots  884  can be interchanged in location with the boss  836  and the lug  834  in some applications.  
         [0144]     In use, the illustrated frame assembly  802  generally defines the components associated with most eyewear: the brow bar  810 , the bridge  814  and the temples  812 . To provide the lenses  820 , a user slips the subframe assembly  804  behind the frame assembly  802  with the slots  884  being slid onto the posts  880  of the frame assembly  502 . In such a position, the bridge  824  of the subframe assembly  804  is generally concealed from the front of the eyewear and the lenses  820  that are positioned in the subframe assembly  804  appear to be part of the frame assembly  802 . Nonetheless, when the user desires, the lenses  820  and the subframe assembly  804  can be removed from behind the frame assembly  802  and an alternative set of lenses and subframe assembly can be placed in the frame assembly  802  or the lenses  820  and the subframe assembly  804  can be placed in an alternative frame assembly.  
         [0145]     Although the present invention has been disclosed in the context of certain preferred embodiments, examples and variations, it will be understood by those skilled in the art that the present invention extends beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the invention and obvious modifications and equivalents thereof. In addition, while a number of variations of the invention have been shown and described in detail, other modifications, which are within the scope of this invention, will be readily apparent to those of skill in the art based upon this disclosure. For instance, the exterior shape and dimensions of the frame assemblies, subframe assemblies, mechanical interlocks and magnetic interlocks can be any suitable shape or configuration, including the use of curved or straight surfaces in the place of straight or curved surfaces. In addition, the connections preferably are made with the lens assembly resting on a surface of the frame assembly. In some embodiments, however, the lens assembly can be positioned such that the frame assembly rests on a portion of the lens assembly. It is also contemplated that various combinations or subcombinations of the specific features and aspects of any of the many embodiments may be made and still fall within the scope of the invention. It should be understood that various features and aspects of the disclosed embodiments can be combined with or substituted for one another in order to form varying modes of the disclosed invention. Moreover, some variations that have been described with respect to one embodiment and not another embodiment can be used with such other embodiments. For instance, the subframe assembly can be supported in one, two or more locations on the frame assembly. Many variations have been described herein and cross-application is intended where physically possible. Thus, it is intended that the scope of the present invention herein disclosed should not be limited by the particular disclosed embodiments described above, but should be determined only by a fair reading of the claims that follow.