Abstract:
Methods and systems for generating one or more scents in conjunction with light. Light of various colors, including dynamic lighting effects, may be generated such that at least one characteristic of the light may be based at least in part on one or more characteristics of a scent or scents, and/or proximate environmental conditions. In one example, one or more LED-based light sources are employed together with a scent-producing facility in a conventional household product (e.g., an integrated air-freshener/LED night light, an LED-simulated candle with scent, etc.).

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This application claims the benefit, under 35 U.S.C. §120, as a continuation (CON) of U.S. Non-provisional application Ser. No. 10/656,807, filed Sep. 5, 2003, entitled “Methods and Systems for Illuminating Household Products.” 
     Ser. No. 10/656,807 in turn claims the benefit, under 35 U.S.C. §119(e), of the following U.S. Provisional Applications: Ser. No. 60/408,309, filed Sep. 5, 2002, entitled “Methods and Systems for Illuminating Household Products;” and Ser. No. 60/452,767, filed Mar. 7, 2003, entitled “Light Emitting Diode Based Products.” 
     Ser. No. 10/656,807 also claims the benefit, under 35 U.S.C. §120, as a continuation-in-part (CIP) of the following U.S. Non-provisional Applications: 
     Ser. No. 10/245,786, filed Sep. 17, 2002, entitled “Light Emitting Diode Based Products,” now U.S. Pat. No. 6,965,205, which in turn claims the benefit of U.S. provisional application Ser. No. 60/353,569, filed Feb. 1, 2002, entitled “LED Systems and Methods,” both of which applications are hereby incorporated herein by reference, and 
     Ser. No. 10/325,635, filed Dec. 19, 2002, entitled “Controlled Lighting Methods and Apparatus,” which application also is hereby incorporated herein by reference, and which application is a continuation-in-part of Ser. No. 09/716,819, filed Nov. 20, 2000, entitled “Systems and Methods for Generating and Modulating Illumination Conditions,” now U.S. Pat. No. 7,014,336, which in turn claims priority to U.S. provisional application Ser. No. 60/235,678, filed Sep. 27, 2000, entitled “Ultraviolet Light Emitting Diode Device.” 
     Each of the above-identified applications/patent is hereby incorporated herein by reference. 
    
    
     BACKGROUND 
     Lighting elements often are used to illuminate a variety of consumer products, including wearable accessories, novelty items, or the like. Existing illuminated products, however, are generally only capable of exhibiting fixed illumination with one or more light sources. An existing wearable accessory, for example, might utilize a single white-light bulb as an illumination source, with the white-light shining through a transparent colored material. Such accessories only exhibit an illumination of a single type (a function of the color of the transparent material) or at best, by varying the intensity of the bulb output, a single-colored illumination with some range of controllable brightness. Other existing systems, to provide a wider range of colored illumination, may utilize a combination of differently colored bulbs. Such accessories, however, remain limited to a small number of different colored states. 
     SUMMARY 
     Applicants have generally recognized and appreciated that a variety of consumer products, including but not limited to household products and items, appliances and equipment associated with appliances, wearable accessories, novelty items, toys, games and the like may benefit from improved color illumination processing, and/or networking attributes. High-brightness LEDs, combined with a processor for control, can produce a variety of pleasing effects for display and illumination. Accordingly, one embodiment of the present invention relates to using high-brightness, processor-controlled LEDs in combination with diffuse materials to produce color-changing effects in connection with a variety of consumer products, including household items. 
     Methods and systems are provided for illuminating a fluid household product. The methods and systems include providing a container for the fluid household product, providing a light system in operative connection with the container, the light system comprising a light and a processor and being capable of producing illumination of a plurality of colors under control of the processor, and illuminating the fluid using the light system. The light system can illuminate a spray of fluid coming from the container. The light systems can illuminate fluids in transparent containers. The light systems can illuminate packaging for a household product. 
     A wide range of household products can benefit from methods and systems for color changing illumination. 
     Methods and systems are provided herein for illuminating packaging, including packaging for household products. 
     Methods and systems are provided herein for illuminating fluids, including liquids, visible gases and vapors, including all of those present in household products and household facilities, such as household water systems. 
     Methods and systems are provided herein for illuminating chemicals. 
     Methods and systems are provided herein for illuminating chemical household products. 
     Methods and systems are provided herein for illuminating products, including household products. 
     Methods and systems are provided herein for providing illumination for household products. Embodiments include a light system under the control of a processor for providing illumination of a selected color and disposing the illumination system in proximity to the household product to light a feature of the household product. In embodiments the product includes a container, such as a spray container, with the light system placed in the bottom of the container, the neck of the container, the interior of the container, the top of the container, or the nozzle of the container. The container may contain a fluid, such as water, ammonia, bleach, window cleaner, insect repellant, insect killer, lotion, soap, liquid soap, kitchen cleaner, bathroom cleaner, shaving gel, cleaning fluid, lighter fluid, furniture polish, wood treatment, paint, primer, drain cleaner, disinfectant, room deodorizer, carpet deodorizer, room scent, perfume, cologne, shaving foam, toilet cleaner, aerosol, skin care fluid, suntan lotion, shampoo, surface cleaner, and liquid wax. In embodiments the light system changes the color of the fluid in response to the processor. In embodiments the light system illuminates the spray of fluid coming from the container. In embodiments the spray produces a rainbow effect. In embodiments, the color of light changes in response to the processor. The container may be an aerosol can. Color changes may include different color temperatures of white light. 
     In embodiments, the household product may be a pencil, a pen, a fork, a knife, a spoon, a kitchen utensil, a whisk, a broom, a bottle, a glass, a mug, a coffee maker, a toothpaste tube, a dispenser, a shampoo bottle, a soap holder, a razor, an electric razor, a hair dryer, a picture frame, a marker, a jar, a makeup facility, a perfume dispenser, a brush, a lipstick, a candle or another household product. 
     In embodiments the processor changes light to indicate data related to the product, such as data about freshness or efficacy. The processor may respond to a network, including to addressable data. The processor may respond to a sensor. 
     Methods and systems may further include an optical facility for directing light, such as a lens, a mirror, a liquid lens, a spinning mirror, a fresnel lens, a convex lens, a concave lens, a fiber optic, and a light pipe. 
     Methods and systems are provided for insect control, including methods and systems for providing a light system with a plurality of LEDs and a processor for controlling a color of light from the LEDs; and providing an insect control facility in connection with the light system. The insect control facility can be a roach motel, a flypaper, a mosquito net, a tiki torch, a mosquito coil, a bug zapper, a deck light, a pool light or other facility. The processor can be used to control the light system to produce light of a selected frequency, including white light frequencies, such as to attract or repel selected insects. The insect control facility can be configured as a wand that contains the light system and that sprays insect spray. 
     Illumination methods and systems are provided herein for illuminating toilets, razors, brooms, animal collars, toothbrushes, candles, showerheads, and other household items. 
     Methods and systems are provided for illuminating an appliance, such as a faucet, a shower, a tub, a sink, an appliance, a refrigerator, an oven, a microwave, a counter, a drawer, a cabinet, a floor, a ceiling, a wall, a chair, a desk, a table, a washer, a dryer, a mixer, a blender, and a toaster. In embodiments, the light system responds to a sensor associated with the appliance, such as a heat sensor, such as to indicate that the appliance is hot. 
     Methods and systems are provided for packaging merchandise, including methods and systems for providing a light system with a plurality of LEDs and a processor for controlling a color of light from the LEDs and for disposing the light system in connection with packaging for an item of merchandise. In embodiments the packaging is a can, a container, a box, a package, or a shrinkwrap package. In embodiments, the merchandise is a household cleaner, a wax, a shampoo, a soap, a razor, a toothbrush, a light bulb or skin care product. 
     Methods and systems are provided for illuminating chemicals, including methods and systems for providing a light system with a plurality of LEDs and a processor for controlling a color of light from the LEDs and for lighting the chemical with the light system, wherein the light interacts with the chemical to create an effect. In embodiments the effect is generated by a luminescent facility of the chemical. In embodiments the effect is used to confirm that a chemical has been applied over a given surface. In embodiments, the chemical is an insect repellant, a deck sealer, a lotion, a medicine or a suntan lotion. 
     Methods and systems are provided for providing illumination and scent. Included are methods and systems for providing a light system with a plurality of LEDs and a processor for controlling a color of light from the LEDs and for providing a scent-producing facility for producing coordinated illumination and scent. In embodiments coordination is by a network. In embodiments the scent-producing facility is an air freshener. In embodiments the scent is correlated with illumination that reflects at least one of a similar aesthetic condition, an emotional state, an environmental condition, and a data item. 
     Methods and systems are provided for illuminating a fluid household product. The methods and systems include providing a container for the fluid household product, providing a light system in operative connection with the container, the light system comprising a light and a processor and being capable of producing illumination of a plurality of colors under control of the processor, and illuminating the fluid using the light system. In embodiments the light system illuminates a spray of fluid coming from the container. In embodiments the container is transparent and the light system illuminates fluid in the container. In embodiments the light system lights a package for the container. 
     The following patents and patent applications are hereby incorporated herein by reference: 
     U.S. Pat. No. 6,016,038, issued Jan. 18, 2000, entitled “Multicolored LED Lighting Method and Apparatus;” 
     U.S. Pat. No. 6,211,626, issued Apr. 3, 2001 to Lys et al, entitled “Illumination Components,” 
     U.S. Pat. No. 6,608,453, issued Aug. 19, 2003, entitled “Methods and Apparatus for Controlling Devices in a Networked Lighting System;” 
     U.S. Pat. No. 6,548,967, issued Apr. 15, 2003, entitled “Universal Lighting Network Methods and Systems;” 
     U.S. patent application Ser. No. 09/344,699, filed Jun. 25, 1999, entitled “Method for Software Driven Generation of Multiple Simultaneous High Speed Pulse Width Modulated Signals;” 
     U.S. patent application Ser. No. 09/805,368, filed Mar. 13, 2001, entitled “Light-Emitting Diode Based Products;” 
     U.S. patent application Ser. No. 09/716,819, filed Nov. 20, 2000, entitled “Systems and Methods for Generating and Modulating Illumination Conditions;” 
     U.S. patent application Ser. No. 09/675,419, filed Sep. 29, 2000, entitled “Systems and Methods for Calibrating Light Output by Light-Emitting Diodes;” 
     U.S. patent application Ser. No. 09/870,418, filed May 30, 2001, entitled “A Method and Apparatus for Authoring and Playing Back Lighting Sequences;” 
     U.S. patent application Ser. No. 10/045,629, filed Oct. 25, 2001, entitled “Methods and Apparatus for Controlling Illumination;” 
     U.S. patent application Ser. No. 10/158,579, filed May 30, 2002, entitled “Methods and Apparatus for Controlling Devices in a Networked Lighting System;” 
     U.S. patent application Ser. No. 10/325,635, filed Dec. 19, 2002, entitled “Controlled Lighting Methods and Apparatus;” 
     U.S. patent application Ser. No. 10/360,594, filed Feb. 6, 2003, entitled “Controlled Lighting Methods and Apparatus;” and 
     U.S. Provisional Application Ser. No. 60/415,897, filed Oct. 3, 2002, entitled “Methods and Apparatus for Illuminating Environments.” 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  depicts a group of LEDs under the control of a processor for providing color changing illumination. 
         FIG. 2  depicts a spray container with optional light systems for providing an illumination facility. 
         FIG. 3  depicts a spray bottle with light systems for providing an illumination facility. 
         FIG. 4  depicts a spray bottle with a light system and an optics facility. 
         FIG. 5  depicts an optical effect of a liquid particle on a light ray. 
         FIG. 6  depicts an insect control facility with an illumination facility. 
         FIG. 7  depicts a toilet with an illumination facility. 
         FIG. 8  depicts a toothbrush with an illumination facility. 
         FIG. 9  depicts a liquid bottle with an illumination facility. 
         FIG. 10  depicts a candle with an illumination facility in a removable base. 
         FIG. 11  depicts a package for merchandise with an illumination facility. 
         FIG. 12  depicts a wand with an illumination facility and a spray facility. 
         FIG. 13  depicts a razor with an illumination facility. 
         FIG. 14  depicts broom with an illumination facility. 
         FIG. 15  depicts a showerhead with an illumination facility. 
         FIG. 16  depicts an animal collar with an illumination facility. 
         FIG. 17  depicts an illumination facility for use in interaction with an application of a chemical. 
         FIG. 18  depicts an appliance with an illumination facility. 
         FIG. 19  illustrates one example of a scent producing apparatus incorporating an illumination source, according to one embodiment of the invention. 
         FIGS. 20A , B, and C illustrate various features related to a scent cartridge of the apparatus of  FIG. 19 , according to one embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  depicts an illumination system  100  with a group of lights  102  under the control of a processor  104  for providing color-changing illumination. Control can be provided through a wide variety of facilities. Optional system elements can include facilities for networking light systems  100 , including a network  108  (which can be a wired or wireless network, bus, circuit, or similar facility) and a control system  110 , which could be a personal computer or other computer system. Methods and systems for networked and non-networked computer control of illumination systems  100  are described in the patents and patent applications referenced above and incorporated by reference herein. 
     The lights  102  can be LEDs or other illumination systems. In preferred embodiments, LEDs can be used. 
     An illumination system  100  consisting of a plurality of LEDs  102  combined with a processor  104  can be disposed in many different environments, including those that relate to household products. 
       FIG. 2  depicts a spray container  200  with light systems  100  for providing illumination to different portions of the spray container  200 . The spray container  200  generates a spray  202  of a fluid  204  that is stored in the interior of the spray container  200 . Light systems  100  can be disposed in the bottom  208  of the container  200 , in the neck  210  of the container  200 , or elsewhere in the interior or on the exterior of the container  200 . In embodiments, the container  200  is a can, such as an aerosol can. 
     In embodiments, the container  200  can be made of a clear material, so that the interior fluid  204  is illuminated by the light systems  100 . The fluid  204  can be clear, or substantially transparent or translucent, so that it takes on a color that is altered by the light from the light systems  100  in the bottom  208  of the container  200 . 
     In embodiments, the light systems in the neck  210  of the container  200  light the fluid  204  as it sprays from the container  200 , so that the spray is an illuminated spray, optionally a color-changing illuminated spray. 
     The fluid  204  can be any fluid, such as fluid useful in a household products, such as water, ammonia, bleach, window cleaner, insect repellant, insect killer, lotion, soap, liquid soap, kitchen cleaner, bathroom cleaner, shaving gel, cleaning fluid, lighter fluid, furniture polish, wood treatment, paint, primer, drain cleaner, disinfectant, room deodorizer, carpet deodorizer, room scent, perfume, cologne, shaving foam, toilet cleaner, aerosol, skin care fluid, suntan lotion, shampoo, surface cleaner, and liquid wax. 
       FIG. 3  depicts a spray bottle  300  with light systems  100  for providing a illumination. The spray bottle  300  may include a bottom  302 , with light systems  100  and/or a neck  304  with light systems  100 . The light systems  100  in the bottom  302  can light a fluid  308  that is stored in the spray bottle  300 . The bottle  300  can be clear, so that a light system  100  illuminates the fluid in colors. The light systems  100  in the neck  304  can illuminate a spray  310  of the fluid  308  in color-changing illumination conditions. 
     As with fluids in a can or similar container  200 , the fluid  308  can be any fluid, such as fluid useful in a household products, such as water, ammonia, bleach, window cleaner, insect repellant, insect killer, lotion, soap, liquid soap, kitchen cleaner, bathroom cleaner, shaving gel, cleaning fluid, lighter fluid, furniture polish, wood treatment, paint, primer, drain cleaner, disinfectant, room deodorizer, carpet deodorizer, room scent, perfume, cologne, shaving foam, toilet cleaner, aerosol, skin care fluid, suntan lotion, shampoo, surface cleaner, after shave and liquid wax. 
     Thus, the fluid  308  can be illuminated either in the bottle  300  or in a spray  310  or stream that is sprayed from the bottle  300 . 
       FIG. 4  depicts a spray bottle  400  with a light system  100  in the neck  402 . The system also includes an optics facility  404 , such as a mirror or lens, that reflects light from the spray bottle  400  in a ray  408 . The ray  408  can illuminate a spray coming from the bottle, or it can be directed otherwise from the bottle  400 , such as out the top, or down into the fluid in the bottle  400 . The optics facility  404  is one of many optional optics facilities  404 , such as mirrors, lenses, and the like, that can be used to manipulate light from a light system  100  disposed on or in a household product, such as a container  200 , or bottle  300 ,  400 . 
       FIG. 5  depicts an optical effect of a fluid particle  500  on a light ray  502 . A fluid particle  500  can reflect or refract light  502 , resulting in redirection of the light, and in some cases changing the color of the light, such as in a rainbow effect. Sprays and streams of fluid coming from a household products, faucet, or shower head can be illuminated by light systems  100 , creating aesthetically pleasing effects, due to the interaction of light from the light systems  100  with the fluids. 
       FIG. 6  depicts an insect control facility  600  with an illumination facility. A light system  100  can be disposed on the insect control facility  600 . Insects respond to light of different frequencies. The light from the light systems  100  can be used to attract or repel insects. The control facility  600  can be used in a roach motel, mosquito net, tiki torch, mosquito coil, bug zapper, deck light, pool light or other insect control facility  600 . 
       FIG. 7  depicts a toilet  700  with an illumination facility. The toilet  700  can include one or more light systems  100 . For example, a light system  100  can be disposed to light the water in the bowl  704 . A light system  100  could also be used to light an odor control mechanism, such as a bar or puck  702  that is disposed in a rack above the bowl. A light system  100  can be disposed in a ring  708  in the bowl. A light system can be used to illuminate water in other locations in the house, such as a bathtub, sink or fountain. 
     In general, a light system  100  can be used to light any household object or appliance, such as a toilet, faucet, shower, tub, sink, appliance, refrigerator, oven, microwave, counter, drawer, cabinet, floor, ceiling, wall, chair, desk, table, washer, dryer, mixer, blender, toaster, or the like. 
     Lights systems  100  can be used to provide color-controlled illumination to common household products.  FIG. 8  depicts a toothbrush  800  with an illumination facility including light systems  100 . The toothbrush can be provided with clear, transparent, translucent or similar materials to permit color changes through the light systems  100 . Household products include a wide variety of items that can benefit from color changing effects, such as, in addition to the toothbrush, a pencil, a pen, a fork, a knife, a spoon, a kitchen utensil, a whisk, a broom, a bottle, a glass, a mug, a coffee maker, a toothpaste tube, a dispenser, a shampoo bottle, a soap holder, a razor, an electric razor, a hair dryer, a picture frame, a marker, a jar, a makeup facility, a perfume dispenser, a brush, a lipstick, and a candle. 
       FIG. 9  depicts a bottle  900  with an illumination facility. The light systems  100  can light the interior  902  or exterior  904  of the bottle  900 . The bottle  900  can be made of materials needed to allow the light systems  100  to provide attractive, aesthetic, or attention-getting effects. The light systems  100  can illuminate a fluid  908  in the interior. Lighting the fluid  908  can provide a pleasing effect, or can attract attention to the bottle on a merchandise shelf. The fluid in the bottle  900  can be any fluid, such as those described above, such as liquid soap, or another fluid, such as water, ammonia, bleach, window cleaner, insect repellant, insect killer, lotion, soap, liquid soap, kitchen cleaner, bathroom cleaner, shaving gel, cleaning fluid, lighter fluid, furniture polish, wood treatment, paint, primer, drain cleaner, disinfectant, room deodorizer, carpet deodorizer, room scent, perfume, cologne, shaving foam, toilet cleaner, aerosol, skin care fluid, suntan lotion, shampoo, after shave, surface cleaner, and liquid wax. 
     One use of a light system  100  in connection with a container  200 , or bottom  300 ,  400  or  900 , or in connection with any other disposable product or product with limited useful life, is as an indicator of a condition of the product. The light system  100  can be coupled with a sensor for sensing a condition of the product, or with a timer for measuring time, or the like. For example a light system can illuminate when a chemical product is no longer working well, such as an odor control chemical. A light system  100  can illuminate in a certain way when a product has reached a certain age. A light system  100  can illuminate in a certain way when a container is nearly empty. Thus, a light system  100  can be used to provide information to a consumer using a product, such as a household product, about the condition of the product itself. A wide range of product characteristics can be measured and indicated by light systems  100  under the control of a processor  104 . 
       FIG. 10  depicts a candle  1000  with an illumination facility in a removable base  1002 . The light systems  100  illuminate the candle  1000 , providing color-changing effects. The base  1002  can hold the light systems  100 , so that disposable candles  1000  can be used with one base  1002 . Many other disposable household objects can be disposed on a base  1002  to provide illumination, such as odor control items, scent-producing items, sprays, fluids, soaps and the like. A glass can be disposed on the base  1002  to illuminate any fluid in it, such as those described above. 
       FIG. 11  depicts a package  1100  for merchandise. The package  1100  can include light systems  100  to provide an illumination facility for the package  1100 . The package  1100  can be illuminated on the shelf to attract attention to any product or merchandise, such as any product that can be provided in a can, container, or box. The product can be a household cleaner, wax, shampoo, soap, razor, toothbrush, skin care product, or any other household or other product described herein or found on retail shelves. 
       FIG. 12  depicts a wand  1200  with a light system  100  for illumination and a spray facility  1202 . The wand  1200  includes a housing  1204  that is translucent or transparent, so that it glows in the color produced by light from the light system  100 . The wand  1200  also includes a spray facility  1202  for spraying a fluid from a reservoir  1208 . The fluid can be any fluid, such as those mentioned above. In an embodiment, the wand sprays insect repellant, and the light system  100  illuminates the spray, as well as the exterior housing  1204  of the wand  1200 . 
       FIG. 13  depicts a razor  1300  with an illumination facility. A light system  100  lights a housing  1302 , which may be made of transparent or translucent material, so that the light system  100  changes the color of the housing  1302  under control of a processor  104  (not shown) of the light system  100 . 
       FIG. 14  depicts broom  1400  with an illumination facility. A light system  100  is disposed in the handle  1402  of the broom  1400 . The light system  100  can light the handle  1402 , which can be made of a transparent or translucent material to accept color changes from the light system  100 . The light system  100  can also be used to light in another direction, such as toward the floor when the broom  1400  is in use. The broom  1400  could be a push broom, hand broom, brush, or similar facility with a handle  1402  and bristles  1404 . 
       FIG. 15  depicts a showerhead  1500  with an illumination facility. A light system  100  with lights  102 , such as LEDs, and a processor  104 , can be disposed in the neck  1502  of the showerhead. The light system  100  can illuminate the water spray from the showerhead  1500 . Similarly, a light system  100  could be used to illuminate a water spray from a faucet, such as that of a sink or tub. 
       FIG. 16  depicts an animal collar  1600  with an illumination facility. A light system  100  can illuminate the collar, or illuminate the area around the collar. The collar can be a flea collar or similar insect control collar, or it can be a conventional collar. 
       FIG. 17  depicts an illumination facility  1700  for use in interaction with an application of a chemical  1702 . Light from the illumination facility  1700  can be provided in any color of the spectrum, under control of a processor  104 . Thus, the light can interact with the chemical  1702  to create an effect. For example, a chemical can include a luminescent portion that lights under light of a given spectrum. Such a luminescent facility could be used to confirm, with an illumination facility  1700  that a chemical has been applied over all of a given surface, such as a surface covered with insect repellant, a deck sealer, or a suntan lotion. 
       FIG. 18  depicts an appliance  1800  with an illumination facility. The appliance  1800  may be an oven, microwave oven, refrigerator, washer, dryer, toaster, or other appliance. The light system  100  can be used to light the appliance  1800  or an interior or exterior environment of or about the appliance  1800 . The light system  100  can be coupled with a sensor to sense an environmental condition and to display illumination that indicates the condition. For example, an oven can light in a red color if it is hot. Sensor and feedback applications are described more particularly in certain patents and patent applications incorporated by reference herein. 
     In yet another embodiment of the present invention, an illumination system is disposed in combination with a scent-producing facility. Together with a processor or processors, this combination allows simultaneous or coordinated production of controlled scent and illumination. In embodiments, the scent/illumination device can be employed in conjunction with a network. In embodiments, the device may be provided with addressable control facilities. In embodiments, the devices can be employed using data delivery protocols such as DMX and power protocols such as pulse width modulation. In embodiments, the devices may be equipped with a communications facility, such as a transmitter, receiver, transceiver, wireless communications facility, wire, cable, or connector. Thus, the device can store, manipulate and otherwise handle data, including instructions that facilitate controlled illumination or controlled scent, or both. The device may also, in embodiments, receive control signals from another source, such as a user interface, an external computer, a sensor, or the like. 
     A wide variety of illumination and display effects can be employed in connection with the scent producing facility, ranging from color washes, to rainbow effects, to rapid changes in color, and the like. The scents can also be controlled whereby different chemicals are triggered to respond to an input signal (e.g. Digiscents Inc. multi-scent devices) and a ‘smell wash’ or smell sequence synchronous with a color wash or color sequence can be activated. 
     In other embodiments, the illumination can reflect a sensed condition, such as a condition sensed in the environment of the scent-producing facility. In other embodiments, the illumination can reflect a condition of the scent-producing facility, such as remaining life of the device, the remaining amount of scent-producing materials or chemicals, the quality of the scent, the strength of scent, battery life, or the like. 
     The scent-producing facility may be an air freshener or other scent-producing facility that may optionally plug into a room outlet. In embodiments, the scent may be varied in response to data received by the device, as controlled by a processor that also controls the illumination. 
     The scent-producing facility can be programmed to produce scents in concert with the illumination; thus, a scent may be correlated with illumination that reflects a similar aesthetic condition, emotional state, environmental condition, data item, or other object or characteristic. For example, a pine scent could be coupled with green illumination, while a pumpkin scent could be coupled with orange illumination. Thus, a wide range of correlated colors and scents can be provided in a device where one or more processors controls both scent and illumination. 
     In an embodiment, the device is a combined air freshener and color-changing night-light, with a processor for control of the illumination condition of the night light, and with LEDs providing the source of illumination for the night light. 
     In an embodiment, a gel may be presented and a color changing illumination system may be directed to illuminate the gel. For example, there are many fragrances, deodorants, and the like that are made into gels. This gel can be made into most any shape and an illumination system may be used to project light through the gel. In an embodiment, the gel may appear to be glowing in colors. 
     In an embodiment, the gel or other material may evaporate over time and as the material evaporates, the light levels captured by the material may diminish. This will result in the light levels decreasing as the material evaporates giving an indication of material life. In an embodiment, the light may actually appear when the evaporation, or other process, has removed a portion of the material. 
     In an embodiment, the illumination may be associated with a sensor. Such a sensor may measure or indicate germ, bacteria or other contamination levels and cause an illumination system to emit certain lighting conditions. An embodiment may be a color changing “germ alert sensors” that would hang in the toilet or trashcan, etc. Example: as your tidy bowl reached the terrifying point of not flooding the sewer lines with chlorine at every flush, your tiny tricolor LED would pulse RED hues to alert you. 
     Another aspect of the present invention is providing light from an apparatus that is coordinated with a scent generation portion of the apparatus. For example, the apparatus may be a plug-in style air freshener and the light produced by the air freshener may be colored to coordinate with the type of scent being emitted. The light emitted from an evergreen scented air freshener may be greenish blue for example. Another aspect of the present invention is providing an indication of useful life of a portion of a system. The system, an air freshening system for example, may have a life limited air cartridge and an indication of life may be provided. The indication of life may be provided through a certain lighting pattern for example. 
     An embodiment of the present invention is a scent producing apparatus  1900  with an illumination source  100 . One such device is illustrated in  FIG. 19 . The illumination source, or system, may be similar to that described above as illumination system  100 . The illumination system  100  may be arranged to produce color controllable illumination through an optic  1908  for example. The scent producing apparatus  1900  may be adapted to plug into a conventional wall power outlet through an adapter  1910 . The apparatus  1900  may include a vented portion  1914  to facilitate the emission of scent from a scent cartridge  1902  once installed. 
     According to one aspect of the invention, the scent producing apparatus  1900  may be adapted to read, or otherwise identify, certain characteristics of the scent cartridge. For example, it may identify the type of cartridge, the scent to be produced by the cartridge, the date of manufacture, date of installation, serial number or other parameter. In an embodiment, the scent producing apparatus may be adapted to alter the color, pattern, intensity or other parameter of the light emitted by the illumination system  100 . For example, the cartridge  1902  may be encoded to identify the type of scent it produces. The scent producing apparatus  1900  may read the code and alter the light it produces to match the type of scent. The scent may be deemed an evergreen scent and the light emitted from the illumination system  100  may be altered to be green or blue for example. The light may also have a temporal effect such as to alternate between a green and blue or generate some other pattern intended to coordinate with the scent. 
     In another embodiment, the scent producing apparatus  1900  may also monitor the duration the cartridge  1902  is in the scent producing apparatus  1900  or otherwise monitor the effectiveness of the cartridge. Once the effectiveness, or lapsed time, indicates the cartridge should be changed, the illumination system  100  may be adapted to change the lighting pattern, color, intensity or other parameter it is producing. This method of operation may be useful indicating to a user that the cartridge is due to be changed. In an embodiment, the apparatus  1900  may include a user interface  1912 , much like the user interface identified above. The user interface  1912  may be used to override the indication light to provide normal illumination or alter the illumination to accommodate his/her desires. In an embodiment, the illumination system  100  may be adapted to stay in an override operation mode for a preset period of time. For example, the preset period may be three days, such that the light stays in the override lighting pattern for three days and then automatically converts back to the end of usefulness indication. This may be useful to allow a user to go into an override mode for a period of time but automatically be reminded that the cartridge needs to be renewed. In an embodiment, the user may set the time of the override and/or the user may have the option of electing an override period that does not automatically end. 
     In an embodiment, the apparatus  1900  may have a set of contacts  1920 . The contacts  1920  may be associated with a processor in the apparatus  1900  (e.g. processor  104  of the illumination system  100 ). The processor  104  may be adapted to monitor the contacts  1920  for activity or association characteristics with a cartridge  1902 . For example, the contacts  1920  may be on a rear interior wall of the apparatus  1900  and the cartridge  1902  may have conductive strips  2002  on the rear wall  1904  of the cartridge  1902 . The illustrations in  FIGS. 20A  and B show different patterns of conductive strips  2002  on the rear wall  1904  of the cartridge  1902 . The illustration in  FIG. 20A  may represent the conductive strip pattern associated with an evergreen scent cartridge while the illustration in  FIG. 20B  may represent a raspberry scent cartridge. When a cartridge  1902  with the pattern  2002  of  FIG. 20A  is inserted into the apparatus  1900 , the contacts  1920  will sense the pattern and the processor  104  can adjust the color of the light emitted accordingly. For example, the bottom protrusion of pattern  2002  may be aligned with one of the contacts  1920  in an array of contacts and the upper protrusion of pattern  2002  may be associated with another contact  1920  of the array. Depending on the placement of the upper pattern, for example, may dictate which contact in the array is associated with the pattern. The processor  104  may then recognize the pattern and adjust the lighting accordingly. This is but one example of a system designed to recognize a cartridge type of many that are envisioned by the applicant and encompassed by the present invention. For example,  FIG. 20C  illustrates another such method. 
       FIG. 20C  illustrates the rear wall  1904  of a cartridge  1902 . The rear wall  1904  may include three electrically conductive pads. Pads  2004  may be designed to bring power to a circuit on the cartridge  1902  and the third pad  2010  may be a data pad for the circuit. These three pads may be associated with a circuit (e.g. integrated circuit  2008 ) and the integrated circuit may be adapted to output data to the data pad, which in turn may be associated with the processor  104  in the apparatus  1900 . The integrated circuit may be adapted to produce data indicative of the cartridge type, scent, manufacturing date, installation date, lapsed time that the cartridge received power (e.g. measure of time in use), or other parameter. The circuit may include a counter and once the counter reaches a particular point it may indicate it is time to change the cartridge through a display of a certain lighting pattern, or it may make a sound or provide some other type of alert. The timing system may provide several indications of remaining usefulness so the user can become informed as to the state (e.g. the cartridge is 80% spent) and time the replacement accordingly. 
     In an embodiment, the apparatus  1900  may be programmed to display a color of light that is an indication of useful remaining life of the cartridge. For example, the light may be blue when the cartridge is new or full and it may gradually, or in some other predetermined way, change through a rainbow of colors until it reaches red where red indicates the cartridge has reached the end of its useful life. The user interface  1912  may allow a user to select such a mode, for example. 
     In an embodiment, the apparatus  1900  may include a switch  1918  where the switch  1918  is depressed, or otherwise activated, when the cartridge  1902  is loaded into the apparatus. The processor  104  may monitor the activation of the switch  1918  as an indication of the cartridge  1902  being loaded. From this indication, the apparatus  1900  may monitor or predict certain events. For example, the processor  104  may begin a timing circuit in an effort to predict the useful life of the cartridge  1902 . In an embodiment, the switch may be associated with a mechanism or circuit to indicate whether the cartridge has been removed during a power down cycle. For example, the switch may be associated with a dial where the position of the dial can be read. When the apparatus  1900  is re-powered, the processor  104  may check the dial position and compare to the position indication of the dial before power-down to indicate if the cartridge has been removed. If the cartridge was removed, the processor may automatically start a new timer for the prediction of cartridge life expectancy. In an embodiment, the processor may also provide an indication (e.g. certain lighting pattern) that it believes the cartridge has been changed and ask for a user confirmation through the user interface  1912 . 
     While the invention has been described in connection with certain preferred embodiments, other embodiments will be readily understood by those of ordinary skill in the art and are encompassed herein.