Methods and apparatus for applying lighting to an object

Disclosed are methods and apparatus for lighting control. Initial lighting may be applied to an object in response to identifying presence of the object. The initial lighting may be adjusted based on a user lighting manipulation gesture made proximal to the object. Also, for example, in some embodiments a lighting system (100, 200) may be provided that includes at least one light source (164, 264), an object sensor (153, 255), a gesture sensor (156, 255), and a controller (150, 250). The controller may provide lighting having a first state in response to the object sensor initially identifying presence of the object and may adjust the lighting in correspondence with a lighting manipulation gesture sensed via the gesture sensor to achieve a second state distinct from the first state.

TECHNICAL FIELD

The present invention is directed generally to lighting control. More particularly, various inventive methods and apparatus disclosed herein relate to controlling one or more properties of light output directed at an object.

BACKGROUND

Digital lighting technologies, i.e. illumination based on semiconductor light sources, such as light-emitting diodes (LEDs), offer a viable alternative to traditional fluorescent, HID, and incandescent lamps. Functional advantages and benefits of LEDs include high energy conversion and optical efficiency, durability, lower operating costs, and many others. Recent advances in LED technology have provided efficient and robust full-spectrum lighting sources that enable a variety of lighting effects in many applications. Some of the fixtures embodying these sources feature a lighting module, including one or more LEDs capable of producing different colors, e.g. red, green, and blue, as well as a processor for independently controlling the output of the LEDs in order to generate a variety of colors and color-changing lighting effects, for example, as discussed in detail in U.S. Pat. Nos. 6,016,038 and 6,211,626, incorporated herein by reference.

In lighting systems, such as those that include LED-based light sources, it is desirable to have control over one or more light sources of the lighting system. For example, in a retail environment, it may be desirable to have lighting with certain parameters (e.g., color, illumination intensity, beam width, beam angle) applied to one or more areas of the environment. Direct specification during commissioning of the one or more light sources enables specification of lighting parameters for an environment. However, direct specification may suffer from one or more drawbacks such as lack of ability to fine-tune applied lighting, lack of flexibility for adapting to newly introduced objects and/or relocation of existing objects, and/or lack of tailoring of lighting parameters and/or adjustments to specific objects.

Thus, there is a need in the art to provide methods and apparatus that enable control of one or more properties of light output applied to an object and that optionally overcome one or more drawbacks of existing lighting systems.

SUMMARY

The present disclosure is directed to inventive methods and apparatus for lighting control. More particularly, various inventive methods and apparatus disclosed herein relate to controlling one or more properties of light output directed at or applied to an object. For example, in various embodiments and implementations of the invention, initial lighting is applied to an object in response to identifying presence of the object. The initial lighting may be adjusted based on a user lighting manipulation gesture made proximal to the object. Also, for example, in some embodiments a lighting system may be provided that includes at least one light source, an object sensor, a gesture sensor, and a controller. The controller may provide lighting having a first state in response to the object sensor initially identifying presence of the object and may adjust the lighting in correspondence with a lighting manipulation gesture sensed via the gesture sensor to achieve a second state distinct from the first state.

Generally, in one aspect, a method of applying lighting to an object is provided and includes the steps of: identifying presence of an object at a location; directing lighting having first properties to the location in response to identifying presence of the object at the location; entering a lighting fine-tuning mode; identifying a user lighting manipulation gesture proximal to the location when in the lighting fine-tuning mode; and adjusting at least one lighting property of the first properties of the lighting in correspondence with the lighting manipulation gesture in the lighting fine-tuning mode.

In some embodiments, the method further includes the step of identifying at least one property of the object. In some versions of those embodiments, the one lighting property is adjusted based on the property of the object. In some versions of those embodiments an adjustment rate of the lighting property is based on the property of the object. The property of the object may include at least one of size and shape and, optionally, an adjustment rate of the lighting property may be based on the size and/or shape of the object. In some versions of the embodiments where at least one property of the object is identified, an adjustment range of the lighting property is based on the property of the object. In some versions of those embodiments the adjustment range is proportional to the property of the object.

In some embodiments, the method further includes receiving a user fine-tuning input and entering the lighting fine-tuning mode in response to the user tine tuning input. In some versions of those embodiments the user fine-tuning input is a fine-tuning gesture proximal to the location.

In some embodiments, the fine-tuning mode is entered in response to identification of presence of the object at the location. In some versions of those embodiments the fine-tuning mode is active for at least a predetermined amount of time after identification of presence of the object at the location.

Generally, in another aspect, a method of applying lighting to an object is provided and includes the steps of: identifying a location of an object to be illuminated; identifying at least one property of the object; directing lighting having first properties to the location in response to identifying presence of the object at the location, wherein the first properties of the lighting are based on the property of the object; identifying a user lighting manipulation gesture; determining if the user lighting manipulation gesture corresponds to the object; and adjusting at least one lighting property of the first properties of the lighting in correspondence with the lighting manipulation gesture when it is determined the lighting manipulation gesture corresponds to the object.

In some embodiments, the one lighting property is adjusted based on the property of the object.

In some embodiments, the property of the object includes at least one of size and shape.

In some embodiments, an adjustment rate of the lighting property is based on the property of the object. In some versions of those embodiments the adjustment rate is proportional to the size of the object.

In some embodiments, an adjustment range of the lighting property is based on the property of the object.

Generally, in another aspect, a lighting system is provided and includes a controller in electrical communication with at least one light source, an object sensor, and a gesture sensor. The at least one light source generates lighting having at least one adjustable lighting property. The object sensor is configured to sense presence of an object at a location. The gesture sensor is configured to sense a lighting manipulation gesture action by a user proximal the location. The controller provides the lighting having a first state of the adjustable lighting property in response to the object sensor initially identifying presence of the object at the location. The controller adjusts the adjustable lighting property in correspondence with the lighting manipulation gesture sensed via the gesture sensor to achieve a second state distinct from the first state.

In some embodiments, the object sensor and the gesture sensor are part of a combinational object and gesture sensor.

In some embodiments, the controller is in wireless electrical communication with at least one of the light source, the object sensor, and the gesture sensor. In some versions of those embodiments the controller is in wireless electrical communication with each of the light source, the object sensor, and the gesture sensor.

As used herein for purposes of the present disclosure, the term “LED” should be understood to include any electroluminescent diode or other type of carrier injection/junction-based system that is capable of generating radiation in response to an electric signal and/or acting as a photodiode. Thus, the term LED includes, but is not limited to, various semiconductor-based structures that emit light in response to current, light emitting polymers, organic light emitting diodes (OLEDs), electroluminescent strips, and the like. In particular, the term LED refers to light emitting diodes of all types (including semi-conductor and organic light emitting diodes) that may be configured to generate radiation in one or more of the infrared spectrum, ultraviolet spectrum, and various portions of the visible spectrum (generally including radiation wavelengths from approximately 400 nanometers to approximately 700 nanometers). Some examples of LEDs include, but are not limited to, various types of infrared LEDs, ultraviolet LEDs, red LEDs, blue LEDs, green LEDs, yellow LEDs, amber LEDs, orange LEDs, and white LEDs (discussed further below). It also should be appreciated that LEDs may be configured and/or controlled to generate radiation having various bandwidths (e.g., full widths at half maximum, or FWHM) for a given spectrum (e.g., narrow bandwidth, broad bandwidth), and a variety of dominant wavelengths within a given general color categorization.

For example, one implementation of an LED configured to generate essentially white light (e.g., a white LED) may include a number of dies which respectively emit different spectra of electroluminescence that, in combination, mix to form essentially white light. In another implementation, a white light LED may be associated with a phosphor material that converts electroluminescence having a first spectrum to a different second spectrum. In one example of this implementation, electroluminescence having a relatively short wavelength and narrow bandwidth spectrum “pumps” the phosphor material, which in turn radiates longer wavelength radiation having a somewhat broader spectrum.

It should also be understood that the term LED does not limit the physical and/or electrical package type of an LED. For example, as discussed above, an LED may refer to a single light emitting device having multiple dies that are configured to respectively emit different spectra of radiation (e.g., that may or may not be individually controllable). Also, an LED may be associated with a phosphor that is considered as an integral part of the LED (e.g., some types of white LEDs).

The term “light source” should be understood to refer to any one or more of a variety of radiation sources, including, but not limited to, LED-based sources (including one or more LEDs as defined above), incandescent sources (e.g., filament lamps, halogen lamps), fluorescent sources, phosphorescent sources, high-intensity discharge sources (e.g., sodium vapor, mercury vapor, and metal halide lamps), lasers, other types of electroluminescent sources, etc.

A given light source may be configured to generate electromagnetic radiation within the visible spectrum, outside the visible spectrum, or a combination of both. Hence, the terms “light” and “radiation” are used interchangeably herein. Additionally, a light source may include as an integral component one or more filters (e.g., color filters), lenses, or other optical components. Also, it should be understood that light sources may be configured for a variety of applications, including, but not limited to, indication, display, and/or illumination. An “illumination source” is a light source that is particularly configured to generate radiation having a sufficient intensity to effectively illuminate an interior or exterior space. In this context, “sufficient intensity” refers to sufficient radiant power in the visible spectrum generated in the space or environment (the unit “lumens” often is employed to represent the total light output from a light source in all directions, in terms of radiant power or “luminous flux”) to provide ambient illumination (i.e., light that may be perceived indirectly and that may be, for example, reflected off of one or more of a variety of intervening surfaces before being perceived in whole or in part).

The term “spectrum” should be understood to refer to any one or more frequencies (or wavelengths) of radiation produced by one or more light sources. Accordingly, the term “spectrum” refers to frequencies (or wavelengths) not only in the visible range, but also frequencies (or wavelengths) in the infrared, ultraviolet, and other areas of the overall electromagnetic spectrum. Also, a given spectrum may have a relatively narrow bandwidth (e.g., a FWHM having essentially few frequency or wavelength components) or a relatively wide bandwidth (several frequency or wavelength components having various relative strengths). It should also be appreciated that a given spectrum may be the result of a mixing of two or more other spectra (e.g., mixing radiation respectively emitted from multiple light sources).

For purposes of this disclosure, the term “color” is used interchangeably with the term “spectrum.” However, the term “color” generally is used to refer primarily to a property of radiation that is perceivable by an observer (although this usage is not intended to limit the scope of this term). Accordingly, the terms “different colors” implicitly refer to multiple spectra having different wavelength components and/or bandwidths. It also should be appreciated that the term “color” may be used in connection with both white and non-white light.

The terms “lighting fixture” and “luminaire” are used interchangeably herein to refer to an implementation or arrangement of one or more lighting units in a particular form factor, assembly, or package. The term “lighting unit” is used herein to refer to an apparatus including one or more light sources of same or different types. A given lighting unit may have any one of a variety of mounting arrangements for the light source(s), enclosure/housing arrangements and shapes, and/or electrical and mechanical connection configurations. Additionally, a given lighting unit optionally may be associated with (e.g., include, be coupled to and/or packaged together with) various other components (e.g., control circuitry) relating to the operation of the light source(s). An “LED-based lighting unit” refers to a lighting unit that includes one or more LED-based light sources as discussed above, alone or in combination with other non LED-based light sources. A “multi-channel” lighting unit refers to an LED-based or non LED-based lighting unit that includes at least two light sources configured to respectively generate different spectrums of radiation, wherein each different source spectrum may be referred to as a “channel” of the multi-channel lighting unit.

In one network implementation, one or more devices coupled to a network may serve as a controller for one or more other devices coupled to the network (e.g., in a master/slave relationship). In another implementation, a networked environment may include one or more dedicated controllers that are configured to control one or more of the devices coupled to the network. Generally, multiple devices coupled to the network each may have access to data that is present on the communications medium or media; however, a given device may be “addressable” in that it is configured to selectively exchange data with (i.e., receive data from and/or transmit data to) the network, based, for example, on one or more particular identifiers (e.g., “addresses”) assigned to it.

The term “network” as used herein refers to any interconnection of two or more devices (including controllers or processors) that facilitates the transport of information (e.g. for device control, data storage, data exchange, etc.) between any two or more devices and/or among multiple devices coupled to the network. As should be readily appreciated, various implementations of networks suitable for interconnecting multiple devices may include any of a variety of network topologies and employ any of a variety of communication protocols. Additionally, in various networks according to the present disclosure, any one connection between two devices may represent a dedicated connection between the two systems, or alternatively a non-dedicated connection. In addition to carrying information intended for the two devices, such a non-dedicated connection may carry information not necessarily intended for either of the two devices (e.g., an open network connection). Furthermore, it should be readily appreciated that various networks of devices as discussed herein may employ one or more wireless, wire/cable, and/or fiber optic links to facilitate information transport throughout the network.

The term “user interface” as used herein refers to an interface between a human user or operator and one or more devices that enables communication between the user and the device(s). Examples of user interfaces that may be employed in various implementations of the present disclosure include, but are not limited to, switches, potentiometers, buttons, dials, sliders, a mouse, keyboard, keypad, various types of game controllers (e.g., joysticks), track balls, display screens, various types of graphical user interfaces (GUIs), touch screens, microphones and other types of sensors that may receive some form of human-generated stimulus and generate a signal in response thereto.

DETAILED DESCRIPTION

In lighting systems, such as those that include LED-based light sources, it is desirable to have control over one or more light sources of the lighting system. For example, in a retail environment it may be desirable to have lighting with certain parameters (e.g., color, illumination intensity, beam width, beam angle) applied to one or more areas of the environment. Direct specification of the commissioning of the one or more light sources enables specification of lighting parameters for an environment. However, direct specification and/or control may suffer from one or more drawbacks such as lack of ability to fine-tune applied lighting, lack of flexibility for adapting to newly introduced objects and/or relocation of existing objects, and/or lack of tailoring of lighting parameters and/or adjustments to specific objects. Thus, Applicants have recognized and appreciated a need in the art to provide methods and apparatus that enable control of one or more properties of light output applied to an object and that optionally overcome one or more drawbacks of existing lighting systems.

More generally, Applicants have recognized and appreciated that it would be beneficial to provide various inventive methods and apparatus related to controlling one or more properties of light output directed at or applied to an object. In view of the foregoing, various embodiments and implementations of the present invention are directed to lighting control as described and claimed herein.

In the following detailed description, for purposes of explanation and not limitation, representative embodiments disclosing specific details are set forth in order to provide a thorough understanding of the claimed invention. However, it will be apparent to one having ordinary skill in the art having had the benefit of the present disclosure that other embodiments according to the present teachings that depart from the specific details disclosed herein remain within the scope of the appended claims. Moreover, descriptions of well-known apparatus and methods may be omitted so as to not obscure the description of the representative embodiments. Such methods and apparatus are clearly within the scope of the claimed invention. For example, aspects of the methods and apparatus disclosed herein are described in conjunction with a lighting system having LED-based light sources. However, one or more aspects of the methods and apparatus described herein may be implemented in other lighting systems that additionally and/or alternatively include other non-LED light sources. Implementation of the one or more aspects described herein in alternatively configured environments is contemplated without deviating from the scope or spirit of the claimed invention. Also, for example aspects of the methods and apparatus disclosed herein are described in conjunction with a single controller and single lighting unit. However, one or more aspects of the methods and apparatus described herein may be implemented in other lighting systems that may include multiple controllers and/or multiple lighting units. For example, a single centralized controller may receive sensor input from multiple sensors scattered throughout an environment and control multiple lighting units also scattered throughout the environment based on the received sensor input.

FIG. 1illustrates a flow chart of an example method of applying lighting to an object. Other implementations may perform the steps in a different order, omit certain steps, and/or perform different and/or additional steps than those illustrated inFIG. 1. For convenience, aspects ofFIG. 1will be described with reference to one or more components of a lighting system that may perform the method. The components may include, for example, one or more of the components of lighting system100ofFIGS. 2 and 3and/or lighting system200ofFIGS. 4 and 5. Accordingly, for convenience, aspects ofFIGS. 2-5will be described in conjunction withFIG. 1.

The lighting system100includes at least one controller150in communication with at least one object sensor153and at least one gesture sensor156. The controller150controls one or more LED-based lighting units160based on signals received from the object sensor153and gesture sensor156via interaction with a driver162of the LED-based lighting unit160that drives one or more LEDs164of the LED-based lighting fixture160. In some embodiments the controller150may form part of the driver162. The lighting system200includes at least one controller250in communication with at least one combinational object sensor and gesture sensor255. The controller250controls one or more LED-based lighting units260based on signals received from combinational object sensor and gesture sensor255via interaction with a driver262of the LED-based lighting unit260that drives one or more LEDs264of the LED-based lighting unit260. In some embodiments the controller250may form part of the driver262. The gesture sensor255may include one or more sensors that are utilized to detect both presence of objects and user gestures.

At step10presence of an object is identified. For example, with reference toFIG. 3, presence of shoes1, a watch2, and/or a purse3on a display surface10may be identified via the object sensor153. In some embodiments the object sensor153may be integrated into a display surface110that supports the objects1,2, and3. Also, for example, with reference toFIG. 5, presence of a painting4on a wall5may be identified via object sensor and gesture sensor255. In some embodiments object sensor and gesture sensor255may be integrated into the lighting unit260and/or positioned on a ceiling6, wall5, and/or other location near lighting unit260and/or near painting4. In some embodiments presence of an object may be identified without regard to its particular location. For example, a single object presence sensor may monitor one defined area and a controller may utilize data from the sensor to only identify if an object is present anywhere in that area. In some embodiments, a particular location of an object may also be identified via a single presence sensor and/or analysis of data from multiple presence sensors. For example, a plurality of object sensors may each monitor a unique defined area to identify if an object is present anywhere in that area. The location of the object may be determined by a controller based on which of the sensor(s) identify presence of the object. Also, for example, a single object sensor may monitor one defined area, be utilized to identify if an object is present in that area, and be utilized to identify the particular portion of the area in which the object is present.

In some embodiments, one or more properties of the object may also be identified. For example, as described herein, in some embodiments properties such as size, shape, object type, and/or illumination preferences related to an object may be identified at step10. For example, in some embodiments an object may be provided with a unique identifying marker (e.g., RFID tag, merchandising tag,) that may be read by the presence sensor and/or an additional sensor to identify one or more properties of the object. Also, for example, in some embodiments an image of the object may be analyzed to determine size and/or shape of the object. In some embodiments data from the object sensor153and/or combinational object and gesture sensor255may be utilized to identify the presence of an object and/or one or more properties of the object.

At step15initial lighting is directed to the object identified at step10. For example, with reference toFIG. 3, lighting A from lighting unit160is directed to shoes1, lighting B from lighting unit160is directed to watch2, and lighting C from lighting unit160is directed to purse3. Also, for example, with reference toFIG. 5, lighting D from lighting unit260is directed to painting4. The lighting applied at step15is applied in response to identifying presence of the object at step10and is directed to the object so as to illuminate at least a portion of the identified object. In some embodiments the applied lighting may be tailored to a particularly determined location of the object. For example, in some embodiments one or more LEDs of an array of LEDs may be activated so as to direct light output particularly at a determined location of the object. Also, for example, in some embodiments light output from one or more light sources may be redirected so as to direct light output particularly at a determined location. In some embodiments the applied lighting may be tailored to a particular identified property of the object. For example, in some embodiments the beam width and/or illumination intensity may be tailored to the identified size of the object. Also, for example, in some embodiments which LEDs of an array of LEDs are illuminated may be tailored to the identified size of the object. Also, for example, in some embodiments the angle of applied lighting may be tailored to the identified shape of the object.

In some embodiments, the sensors153and/or255may include one or more vision-based sensors (e.g., cameras). For example, the object sensor153may include one or more cameras may be directed toward display surface110and analysis of images and/or video from the one or more cameras may be analyzed by controller150to determine the location, size, shape, and or illumination preferences of objects1,2, and/or3. For example, an image may be analyzed to identify the location of purse3and to identify that purse3is a hand bag. A stored preference (e.g., in a database accessible via controller150) may be consulted to determine that the illumination preference for handbags is with angled lighting and not directly overhead lighting. As a result, angled lighting C may be directed to the purse3as illustrated inFIG. 3based on the identified property of the purse3. Also, for example, the image may be analyzed to determine an approximate size of the purse3and the number of LEDs164activated may be dependent on such determined size. In some embodiments, a comparison may be made between images of the display surface110without any objects and images of the display surface110with objects to assist in identification of presence of objects and/or identification of one or more properties of the objects.

In some embodiments, the sensors153and/or255may include a light sensor array implemented as part of the surface that supports the object. For example, in some embodiments the object sensor153may include an array of light sensors integrated into the display surface10that supports the objects1,2, and3. Also, for example, in some embodiments the sensor255may include an array of light sensors integrated into the wall5that supports the painting4. Data from the light sensors without any objects being present may be compared to data from the light sensors with objects being present to identify which light sensors are occluded by the object. One or more light sources that are directed and/or that may be directed to the occluded light sensors may then be activated to direct light to the one or more objects blocking the occluded light sensors.

For example, an upper array of LEDs164may be provided in LED-based lighting unit160over a lower array of light sensors integrated into the display area110. The LEDs164may be set to a re-configuration state by a user action such as, for example, pressing a button in communication with controller150. In the reconfiguration state, the objects1,2, and3may be removed, all of the LEDs164in the upper array of LEDs may be activated (simultaneously and/or sequentially), and the array of light sensors in the display area110may each sense a respective light level with one or more of the LEDs164activated. The user may then place one or more of the objects1,2, and/or3on the display area110. The one or more objects1,2, and/or3occlude a number of light sensors, thereby causing those light sensors to sense a lower light level. This drop in sensed light level may be analyzed by controller150to activate one or more LEDs164that generate light directed at, or that may be directed at, the occluded light sensors. In some embodiments the controller150may consult a mapping (e.g., stored in memory associated with controller150) between the light sensors and the LEDs164to determine which LED(s)164are directed at the occluded light sensors. In some embodiments the mapping may be generated via monitoring reactions of each light sensor to individual actuation of each of the LEDs164when no objects are present. The re-configuration state may then be deactivated and the appropriate LED(s) in the upper array of LEDs164activated to illuminate the objects1,2, and3based on the identified light sensor occlusion information. In some embodiments the light sensors may include LEDs that sense light when in an off state.

In response to such light sensors sensing they are in a blocked condition, controller150may communicate with one or more LEDs of upper array of LEDs164to request altered light output characteristics directed toward such blocked LEDs to thereby illuminate the respective object1,2, or3with such characteristics. For example, the controller150may communicate with one or more LEDs164to have them increase their light output intensity to thereby increase illumination levels on the respective object1,2, or3. Also, for example, the controller150may communicate with one or more LEDs164to have them alter their light output color to thereby alter the color of light output on the respective object1,2, or3. Also, for example, the controller150may communicate with one or more LEDs164to have them alter their beam width and/or beam direction. In some embodiments multiple controllers150may be provided, each associated with one or more of the LEDs164. In some embodiments the size of the objects1,2, and/or3may be determined based on occluded light sensor information. For example, watch2may occlude less light sensors than purse3and it may be determined that watch2is smaller than purse3. A wider distribution of light may directed toward purse3than watch2based on such a determination. For example, more LEDs164may be activated that are directed at purse3than LEDs164that are directed at watch2. Data from light sensors and/or other sensors may additionally and/or alternatively be utilized to identify other properties of the objects1,2, and/or3and lighting initially applied to the objects may optionally be based on one or more of such properties. For example, shape of an object may be determined based on which of a plurality of neighboring light sensors are occluded.

In some embodiments, the sensors153and/or255may include a plurality of active ultrasonic transducers and sensors. For example, in some embodiments an array of ultrasonic transducers and sensors may be integrated into the lighting unit160and be generally directed toward the display surface110. Also, for example, in some embodiments an array of light sensors may be integrated into the lighting unit260and/or coupled to the ceiling6and directed at the painting4. The ultrasonic transducers may emit ultrasound waves and the ultrasonic sensors may pick-up reflected of the emitted waves. Data from the ultrasonic sensors may be analyzed to identify the presence and optionally location of objects. For example, time delay between an emitted signal and the received echo is a measure indicative of the distance of the reflecting surface. If objects are placed on a surface this measure indicative of distance will decrease. Shorter time delays may be indicative of an object being present. In some embodiments initial measurements may be taken without any objects being present and measurements taken after objects are present may be compared to the initial measurements to identify if one or more objects are present.

Coordination of the number and/or position of the ultrasonic sensors with the light sources may be utilized to activate certain light sources in response to certain ultrasonic sensors detecting presence of an object. For example, in some embodiments the detection area of each ultrasonic sensor will substantially coincide in area with the light output area of each LED(s) that is associated with the ultrasonic sensor. In some embodiments data from the ultrasonic sensors may be utilized to ascertain the size, shape, and/or type of the object. For example, in some embodiments the borders of an object may be identified to ascertain the size of the object and to adjust the beam width of applied lighting according to the size of the object. For example, the number of LEDs that are activated may be dependent on the identified borders of the object.

In some embodiments, the sensors153and/or255may include a magnetic sensor. For example, in some embodiments one or more magnetic sensors may be integrated into the display surface110and/or one or more magnetic sensors may be integrated into the wall5. The magnetic sensor may detect electromagnetic fields. For example, an induction coil tag coupled to an object that is utilized to prevent shop lifting may be detected by the magnetic sensor when the induction coil tag is sufficiently close. Also, for example, an RFID tag coupled to an object may additionally and/or alternatively be detected by the magnetic sensor when the RFID tag is sufficiently close. Detection of a tag coupled to an object may indicate presence of the object. In some embodiments the location of the object may be particularly detected. For example, in some embodiments a plurality of magnetic sensors may be provided each corresponding to a unique area and data from such sensors analyzed to determine over which of the sensors the object is most closely placed. Also, for example, in some embodiments strength of the sensed electromagnetic field may be analyzed to determine how far away from the sensor the electromagnetic tag likely is. In some embodiments one or more properties of the object may additionally be sensed by the magnetic sensor. For example, the electromagnetic field of the tag of the product may embed product identification information that may enable the system to find associated product properties (e.g., size, shape, preferred illumination conditions) that may be utilized to create an initial lighting effect. In some embodiments transmitted signals to and/or from the controller150and/or controller250may be sent over a network. The signals may include, for example, a signal sent over a control wire and/or wireless communication signals (e.g., utilizing DMX, Ethernet, Bluetooth, ZigBee, and/or Z-Wave communication protocols). For example, signals may be sent wirelessly between the controller150and the object sensor153, gesture sensor156, and/or driver162.

At step20a lighting fine-tuning mode is entered. In some embodiments the lighting fine-tuning mode may be entered in response to a user gesture within a defined user gesture area. For example, a user touch of the gesture sensor156provided on the display area110may cause the lighting fine-tuning mode to be entered for lighting system100. In some embodiments the gesture sensor156may be a capacitive touch sensor. In some embodiments the gesture sensor156may include a plurality of light sensors that may sense occlusion of light by a user's fingers and/or hands. Such sensed occlusion data may be analyzed to determine one or more user lighting manipulation gestures. Also, for example, a user hand movement within a certain distance of the painting4(e.g., as illustrated by hand9inFIG. 5) may cause the lighting fine-tuning mode to be entered for lighting system200. In some embodiments the object and gesture sensor255may include a camera and/or ultrasonic transducer and sensor that monitor for user gestures proximal to the painting4.

In some embodiments, the fine-tuning mode may be entered in response to any user gesture. In some embodiments the fine-tuning mode may be entered in response to a specific user gesture such as a double finger tap and/or a finger snap. In some embodiments the lighting fine-tuning mode may be entered in response to another user action. For example, a voice command and/or actuation of a button in communication with the system may initiate the lighting fine-tuning mode. In some embodiments a particular authentication method may be utilized in order to change the light settings, such as, for instance, a badge with an RFID, a particular spoken command, and/or voice recognition system.

In some embodiments, the lighting fine-tuning mode may be entered automatically. For example, the lighting fine-tuning mode may be entered upon start-up of the lighting system. Also, for example, the lighting fine-tuning mode may be entered after identification of presence of an object at step10and/or after directing of initial lighting to the object at step15. For example, after detecting an object, an initial light effect may be provided on the object. Then, the lighting system could enter a fine-tuning mode for a period of time during which user control gestures will be detected and associated with the identified object. The period of time can be a pre-defined amount of time (e.g., 1 minute) and/or the period of time could end if the system no longer detects gestures for a pre-defined amount of time. In some versions of those embodiments, a user may activate the fine-tuning mode again by removing the object from the detection area and then placing it back. In some embodiments the fine-tuning mode can switch off automatically. For example, the fine-tuning mode may switch off after a time period during which no gestures have been detected. In some embodiments user feedback may be provided upon starting and/or ending the fine-tuning mode (e.g., by visual and/or acoustic feedback).

At step25a user lighting manipulation gesture may be identified when in the lighting fine-tuning mode. For example, a user lighting manipulation gesture on the gesture sensor156provided on the display area110may be identified. The lighting manipulation gesture may include, for example, one or more of the lighting manipulation gestures described herein with respect toFIGS. 6-8B. One of ordinary skill in the art, having had the benefit of the present disclosure, will recognize and appreciate that additional and/or alternative lighting manipulation gestures may be utilized.

Also, for example, a user lighting manipulation gesture within a certain distance of the painting4(e.g., as illustrated by hand9inFIG. 5) may be identified by the object and gesture sensor255. In some embodiments the object and gesture sensor255may include a camera and/or ultrasonic transducer and sensor that monitor for user gestures proximal to the painting4. In some embodiments the identification of the gestures may be based on detecting the increasing and/or decreasing distance from the user's hands to the sensors. For example, waving with a hand up and down and/or back and forth may be recognized as gestures. In some embodiments multiple ultrasound emitters may be provided that are directed near to the detected object. The ultrasound emitters may operate at different frequencies and/or different phases. The echoes from these ultrasound emitters may be picked up by a plurality of sensors. When a user makes a gesture close to the object this will cause a frequency shift between the emitted signal and the echo sensed by the sensors. This frequency shift may be utilized as a basis for a measure of the speed of the gesture. The interference between the sensed echoes from the different emitters may be utilized as a basis for a measure of the position of the user's hands. The combination of the frequency shift and the interference may be utilized to determine the gesture. In some embodiments the ultrasound emitters and/or the sensors may be coupled to a lighting unit such as lighting unit160or260. In some embodiments the ultrasound emitters and/or the sensors may be coupled to a ceiling, wall, and/or other surface. In some embodiments the ultrasound emitters and/or the sensors may detect the gestures and detect the object. For example, combination object and gesture sensor255may include a plurality of ultrasonic transducers and sensors that sense presence of an object and additionally sense lighting manipulation gestures.

In some embodiments, a lighting manipulation gesture may be associated with one of a plurality of detected objects. For example, the lighting manipulation gesture may be associated with the object that is closest in location to the gesture location. For example, a lighting manipulation gesture on gesture sensor156will be associated with the object that is closest to the location on gesture sensor156where the lighting manipulation gesture is made. In some embodiments a mapping between locations on the gesture sensor156and object sensors integrated in the display area110may be consulted to associate the gesture with the object. Also, for example, in some embodiments ultrasonic echoes and/or images may be analyzed to determine to which object a detected lighting manipulation gesture is closest. Also, for example, in some embodiments the gesture can be associated with the object that is located at a particular side of the gesture. For example, the gesture may be associated with the most proximal object to the right of the gesture. Also, for example, in some embodiments the gesture can be associated with the object that is located within a particular range of the gesture. For example, the gesture must be within one inch of an object to be associated with the object. In some embodiments data from both the gesture sensor and the object sensor may be utilized to associate a lighting manipulation gesture with a particular object. In some embodiments feedback may be provided to initially alert the user to which object the lighting manipulation gesture will apply. For example, upon initially detecting a user's hand in a lighting manipulation area associated with a particular object, the lighting being directed to the object may temporarily flash, change colors, dim, and/or brighten.

At step30at least one lighting property of the lighting directed toward the corresponding object is adjusted in correspondence with the lighting manipulation gesture. The lighting property of the lighting may be adjusted as described, for example, with one or more of the example lighting manipulation gestures described herein with respect toFIGS. 6-8B. One of ordinary skill in the art, having had the benefit of the present disclosure, will recognize and appreciate that additional and/or alternative adjustments in response to one or more gestures may be utilized. The lighting property may be adjusted relative to the initial lighting applied to the object in step15. For example, lighting C may be applied to purse3ofFIG. 3at step15and lighting manipulation gestures may be utilized to adjust the direction, beam width, and/or color of the initially applied lighting. The lighting property may also be adjusted relative to a previously user adjusted lighting applied to the object in a previous iteration of step30. In some embodiments the adjusted lighting property may be maintained with the object as the object is moved to other locations. For example, if a light setting is defined for an object at step30and a shopper subsequently moves an object to a new location, that new location and that object can be identified by the object sensor and the same light setting applied to that object at the new location. In those and other embodiments the light setting associated with a particular product may be stored in memory accessible by an associated controller.

In some embodiments, the adjustment of the lighting property may be based only on the lighting manipulation gesture. In some embodiments the adjustment of the lighting property may additionally be based on readings from additional sensors such as an ambient light sensor. In some embodiments the adjustment of the lighting property may additionally be based on one or more identified properties of the object to which the lighting is directed. For example, a relatively small object may have a slower adjustment rate than a relatively larger object. For instance, movement of an adjustment finger one inch according to a first gesture for the larger object may cause a change in the lighting property of a first magnitude and movement of the adjustment finger one inch according to the first gesture for the smaller object may cause a change in the lighting property of a second magnitude that is less than the first magnitude. As an example, a one inch finger movement to adjust beam width may increase beam width one inch for a larger object but may only increase beam width a half inch for a smaller object.

Also, for example, identification of a particular object, object type, lighting preferences, and/or size may enable cycling through a plurality of presets directed toward such particular parameters. For example, a tapping lighting manipulation gesture may be utilized to toggle through a set of predefined lighting effects that are tailored to a specific identified object type and/or object size. Also, for example, an adjustment range of the lighting property may be based on one or more identified properties of the object. For example, the maximum extent of beam width adjustment may be constrained by the size of the object. Also, for example, the range of the intensity of the lighting may be constrained by the identified object type. Also, for example, only adjustment to certain predefined colors and/or color temperatures may be allowed for a particular object type. For instance, lighting for diamond jewelry may only be adjustable within a set of ranges of color temperatures. Also, for example, only certain lighting adjustments may be available for certain object types.

FIG. 6illustrates a plurality of example lighting manipulation gestures that may be utilized in a LED-based lighting system. For example, the lighting manipulation gestures may be utilized in combination with gesture sensor156of lighting system100to adjust lighting properties of one or more of lighting A, B, and/or C. Also, for example, the lighting manipulation gestures may be utilized in combination with combinational object and gesture sensor255to adjust one or more properties of lighting D.

Lighting gesture681utilizes a single finger moving in an upward direction to turn the lighting on. Lighting gesture682utilizes a single finger moving in a downward direction to turn the lighting off. Lighting gesture683utilizes a spread gesture with two fingers spreading apart two increase beam width of the lighting. Lighting gesture684utilizes two fingers in fixed relation moving to the left or right to alter the angular direction of the applied lighting. Lighting gesture685utilizes a single finger moving to the left or right to alter the location of the applied lighting.

FIGS. 7A-Fillustrate additional example lighting manipulation gestures that may be utilized to adjust lighting properties. The lighting gestures are illustrated in combination with another embodiment of a LED-based lighting system300for applying lighting to an object and are illustrated with a shoe301that is being illuminated by the LED-based lighting system300. In some embodiments the gestures ofFIGS. 7A-Fmay additionally and/or alternatively be applied to lighting systems100and/or200.

The lighting gesture ofFIG. 7Autilizes a single finger movement to the left or right to increase (one direction) or decrease (the other direction) the brightness/light effect intensity. The lighting gesture ofFIG. 7Butilizes a single finger circular movement to increase (one direction) or decrease (the other direction) the brightness/light effect intensity. The lighting gesture ofFIG. 7Cutilizes a double finger movement to move the location of the light beam to the left (one direction) and/or the right (the other direction). The lighting gesture ofFIG. 7Dutilizes a double finger spread gesture to increase the beam width of the lighting. In some embodiments a double finger pinch gesture may be utilized to decrease the beam width of the lighting. The lighting gesture ofFIG. 7Eutilizes two fingers held in one location for at least a predetermined amount of time (e.g., one second) to recall a lighting preset and/or to cycle through a plurality of lighting presets.

In some embodiments, lighting manipulation gestures may additionally and/or alternatively be based on an “anchor and adjustment” approach. For example, the first detected (and static) gesture is an anchor to the light effect (e.g., put a finger on a gesture sensing surface, close to the light effect). The second detected gesture is used as a relative modifier relative to the anchor (e.g., a second finger on the surface may be moved relative to the first finger). For example, moving the modifier finger only, while maintaining the anchor finger, may change the intensity of the lighting. Also, for example, moving both the anchor and modifier, while substantially maintaining the relative distance between the two, may change the location of the lighting. Also, for example, moving both the anchor and modifier, while changing the relative distance between the two, may change the width of the light effect. Also, for example, moving the anchor and keeping the modifier may change the angular direction of the lighting. Also, for example, moving the modifier in a circular direction and keeping the anchor substantially stationary may change the color and/or color temperature of the lighting.

FIGS. 8A and 8Billustrate additional example lighting manipulation gestures that may be utilized to adjust lighting properties. The lighting gesture are illustrated in combination with another embodiment of a LED-based lighting system400for applying light to an object and with a mannequin408that is being illuminated by the LED-based lighting system400. In some embodiments the gestures ofFIGS. 8A and/or 8Bmay additionally and/or alternatively be applied to lighting systems100and/or200.

In the lighting system400, local light effects are created from a ceiling lighting infrastructure, based on object detection of floor standing objects such as mannequins408in a shop or shop window, sculptures and artworks in a museum, or local light effects associated with moving actors on a theatre stage. For example, an object sensor may detect the presence and location of mannequin408and apply an initial lighting to the mannequin408. Complete hand and/or arm movements may be utilized to adjust specific parameters of the applied lighting. For example, moving hands up and down as illustrated inFIG. 8Bcan control the light intensity, whereas moving two hands from or to each other as illustrated inFIG. 8Acan control the desired beam width. Also, for example, finger-gestures may be used to select specific presets (e.g., holding up one finger for selecting preset1, two fingers for preset2). The gestures may be detected via a gesture sensor such as, for example, a camera and/or a plurality of ultrasonic transducers and sensors.

It should also be understood that, unless clearly indicated to the contrary, in any methods claimed herein that include more than one step or act, the order of the steps or acts of the method is not necessarily limited to the order in which the steps or acts of the method are recited. Any reference numerals appearing between parentheses in the claims, if any, are provided merely for convenience and should not be construed as limiting in any way.