Abstract: An exemplary backlight module (30) includes a plurality of color light emitting diodes (31), a frame (33), and a reflective divider (35). The frame includes a base (331) and a plurality of sidewalls (335) extending from the base. The sidewalls and the base cooperatively form a receiving space (335). The color light emitting diodes are disposed on the base. The reflective divider is positioned in the receiving space such that the receiving space is divided into a plurality of light-mixing areas. The backlight module can provide good, uniform optical performance due to the light-mixing areas.

Abstract: An image projection system has two illumination beams of different colors. A first polarizing beamsplitter (PBS) has first and second input faces. Light of the first color is incident on the first input face and the light of the second color is incident on second input face. At least some of the light of the first color propagates from the first PBS to a first imager unit via a second PBS. The light of the second color propagates from the first PBS to a second imager unit via, in some embodiments, the second PBS and, in other embodiments, via a third PBS. One type of PBS includes a polarizing layer and a dichroic optical layer that is substantially transparent for light of the first color in a first polarization state and is substantially reflective for light of the second color in a polarization state orthogonal to the first polarization state.

Abstract: An LED light bulb having separately addressable groupings of LED's. The LED light bulb can serve as a visual indicator of emergency or non-emergency conditions by selectively illuminating groupings of LED's in a variety of colors, each color corresponding to a predetermined condition.

Abstract: A back-light source comprises a plurality of light-emitting devices, each light-emitting device having a light-emitting package and a lens surface. In at least some of the light emitting devices, the radius of curvature in one direction of the lens surface is different from the radius of curvature in another direction such that one of the radii of curvature of the lens is greater than the other radius of curvature. In particular, one radius of curvature is equal to or smaller than half the length of the device. The other radius of curvature is equal to or greater than half the length of the device. As such, the lens has different focal lengths in different directions. The light-emitting package can have a plurality of light-emitting sources of a single color or of different colors.

Abstract: A color sequential LCD display is disclosed. In addition to three base color lights including red, green and blue, the display also utilizes at least one additional color light whose color space coordinate is different from any of the three base color lights as additional light source for backlight. By doing so, and objective of expanding gamut ratio of the display can be achieved.

Abstract: A backlight, a backlight assembly and a liquid crystal display having the same, the backlight including a substrate with a plurality of wiring provided thereon, a plurality of LED modules disposed on the substrate and at least one color sensor disposed on the substrate. The color sensor includes a color sensor chip mounted on the substrate and a molding portion enclosing the color sensor chip on the substrate.

Abstract: A LED illuminating device includes an illuminating unit and a shell having a top side and chamber. The illuminating unit includes a PCB supported by the shell and one or more LED modules electrically and spacedly mounted on the PCB disposed in the chamber. Each of the LED modules includes a red LED, a blue LED and a green LED which are symmetrically arranged in a triangular manner side by side. The shell is filled with transparent or translucence epoxy resin to cover the PCB, the root portions of electrical and power wires, which are electrically connected with the LEDs, and the chamber to seal the illuminating unit in the shell to form an integral body, wherein the wires are extended out from two ends of the top side of the LED illuminating device to the another neighboring LED illuminating device.

Abstract: Light emitting assemblies include a light emitting panel assembly having a light transition area for receiving light from at least one light source, and at least one angled or curved reflective or refractive surface at the junction between the transition area and the panel member that causes at least some of the light in the transition area to reflect or refract. A pattern of light extracting deformities on at least one surface of the panel member may vary to cause light to be emitted from the panel member in a desired light output distribution.

Abstract: A light device with a color mixing effect, includes a first light bar, a second light bar, and a holding structure. The first light bar emits a first color light with a first color, and the second light bar emits a second color light with a second color different from the first color. The holding structure, having a light-mixing area, includes a first positioning portion and a second positioning portion. The first positioning portion is for positioning the first light bar, the second positioning portion is for positioning the second light bar, and the first light bar is parallel to and obliquely faces the second light bar, such that the first color light and the second color light are respectively emitted into the light-mixing area to form a third color light with a third color different from the first color and the second color.

Abstract: A pointing device and method for using the same to measure the motion of that pointing device over a surface is disclosed. The pointing device includes an illumination system, an imaging system, and a controller. The illumination system generates light in a plurality of wavelength bands and illuminates a surface below the pointing device with light from one of the wavelength bands. The imaging system records images of the illuminated surface. The controller selects the wavelength band used to illuminate the surface, compares first and second images recorded by the imaging system at different times when the surface is illuminated with that wavelength band, and determines a displacement indicative of the direction and distance the positioning device moved between the two different times.

Abstract: Methods and apparatus for controlled lighting based on a reference color gamut that is shared amongst multiple lighting units. A reference color gamut may be determined for multiple lighting units based on spectral power distributions associated with the lighting units. Variable color light or variable color temperature white light subsequently may be generated consistently and predictably amongst multiple lighting units that are each controlled based on the reference color gamut. Lighting commands received by multiple lighting units may be appropriately processed in each lighting unit, based on a predetermined relationship between the lighting commands and the reference color gamut, to ensure consistent and predictable color or color temperature reproduction amongst the multiple units.

Abstract: An illuminating device able to easily visualize a pedestrian, etc. on a footway by the driver of an automobile is provided. The illuminating device has a footway side light source portion for irradiating light of spectral characteristics rich in blue-green color light to the footway, and a roadway side light source portion for irradiating light of spectral characteristics rich in green-red color light to a roadway. Further, the spectral characteristics of the light irradiated from the footway side light source portion are set such that a value Ip obtained by the following formula (1) is greater than a value IC obtained by the following formula (1) from the spectral characteristics of the light irradiated from the roadway side light source portion.

Abstract: An exemplary light emitting diode module (10) includes plural light emitting units (12) arranged on a circuit board (11). Each light emitting unit includes two first light emitting diodes (121a, 121b), a second light emitting diode (122) and a third light emitting diode (123). The first, second, and third light emitting diodes are electrically connected with the circuit board. The first, second, and third light emitting diodes are arranged in the shape of a polygon, with each of the first, second, and third light emitting diodes being at a respective corner of the polygon.

Abstract: LED-based light bulbs having one or more white LEDs, for replacing/retrofitting conventional light bulbs. An exemplary bulb includes at least one first white LED and at least one power connection having a form configured to engage mechanically and electrically with one of a conventional Edison-mount (screw-type) light bulb socket, a conventional fluorescent tube coupler arrangement, and a conventional halogen MR-16 socket arrangement. The bulb further includes at least one voltage transformation device configured to electrically transform a first voltage applied to the at least one power connection (via the corresponding conventional socket/coupler) to a second voltage that provides operating power to at least the white LED(s). The LED-based light bulb substantially corresponds in shape to a corresponding one of a conventional Edison-mount screw-type light bulb, a conventional fluorescent tube, and a conventional halogen MR-16 light bulb, based on the form of the at least one power connection.

Abstract: A light source having first and second phosphor-converted component light sources is disclosed. The first component light source includes a first LED that emits light at a first wavelength and a first luminescent conversion material layer that converts light of the first wavelength to light of a first output wavelength, and the second component light source includes a second LED that emits light at a second wavelength and a second luminescent conversion material layer that converts light of the second wavelength to light of a second output wavelength that is different from the first output wavelength. The first and second LEDs are constructed in the same material system, preferably in the same batch of wafers on the fabrication line. A controller generates a current through each of the first and second LEDs that results in the light source generating light that is perceived to be a predetermined color.

Abstract: A system for a motor vehicle for detecting driving conditions on a road, including a nebulosity, the range of visibility in the presence of a nebulosity or the distance between an obstacle in the road and the motor vehicle. The system includes a headlight which emits a visible light beam and an infrared light beam, at least one light sensor which receives at least a portion of the infrared beam reflected back to the vehicle, a optical device for directing at least a part of the reflected infrared beam to the light sensor and a device for detecting the modulated signal of the reflected infrared beam and determining at least one driving condition based on a comparison of the reflected infrared beam modulated signal and the corresponding emitted infrared beam modulated signal.

Abstract: A method for controlling the color temperature of a lighting fixture, and a lighting fixture, whereby the lighting fixture is implemented using differently colored light emitting diodes. The method comprises steps of generating light by differently colored light emitting diodes (R, G, B) and controlling a current (IdR, IdG, IdB) flowing through the differently colored light emitting diodes in order to provide the lighting fixture with a desired color temperature.

Abstract: A lighting unit having a light generation section, a light analysis section, a controller, and a first communication interface is disclosed. The light generation section and the light analysis section are housed in a housing having a transparent window. The light generating section includes a plurality of groups of LEDs, each group emitting light of a different spectrum than the other groups. The light analysis section generates intensity signals related to the intensity of light generated by each of the groups and the intensity of light originating from a location outside the housing. The controller adjusts a current through each of the LEDs in response to the intensity signals. The first communication interface is utilized by the controller to communicate with a device external to the lighting unit for receiving commands during the operation of the lighting unit.

Abstract: A light source having first and second component light sources, a mixing device, and a controller is disclosed. The first component light source generates light having a perceived color that can be varied within a predetermined two-dimensional region of the CIE 1976 color space in response to a set of color control signals. The second component light source generates white light. The mixing device combines light from the first and second component light sources to produce an output light signal having a perceived output color. The controller generates the set of color control signals in response to an input signal from a source external to the light source, the controller maintaining the perceived output color at a point in the CIE 1976 color space determined by the input signal.

Abstract: An ambiance lighting system for a vehicular passenger compartment has a variable color light output which is automatically responsive to temperature changes. First and second light sources of different colors (e.g., blue and red) are positioned immediately behind the air discharge vents and are selectively energized by a control circuit so that the first light source radiates light through the vent when the temperature falls below a predetermined value and the second light sources energizes the second color of light when the air temperature rises above a predetermined value. Sensors are used to detect the temperature of air, preferably in the ducting plenum. Various control strategies can be deployed to achieve aesthetically interesting light presentations which enhance ambiance within the passenger compartment.

Abstract: The present invention relates to a low profile, handheld inspection lamp with a unique configuration. Light of different wavelengths is emitted along different portions of the length, and an opaque slider allows the user to select the preferred wavelength of light for a particular task.

Abstract: Disclosed is an illuminating device which, as a light source for a backlight device, mixes the colors of light rays of three prime colors radiated by light emitting diodes to emit white light.

Abstract: A light-mixing module includes a luminous panel having a plurality of red, green, and blue illuminants arranged alternately, at least one corner being formed in an area defined by the arrangement of the illuminants, a predetermined illuminant being located at the corner; at least one mask located above the luminous panel and over the corner for attenuating the light emitted therethrough from the predetermined illuminant thereunder and having a transmittance preferably lower than 90%; and a light-mixing panel located above the luminous panel and the mask. The light emitted from the illuminants passes through the light-mixing panel for mixture to generate required colored light and then to emit outward. Accordingly, the mask prevents the predetermined illuminant from displaying a weighted color, thus attaining the potency of even light mixture.

Abstract: A multiparameter light is disclosed, which incorporates an LED (light emitting diode) tracking ring surrounding a main output lens. The LED tracking ring is capable of additive color mixing and in turn can simulate the color of the main projected light projecting from the main output aperture or output lens of the multiparameter light.

Abstract: A multiparameter light is disclosed, which incorporates an LED (light emitting diode) tracking ring surrounding a main output lens. The LED tracking ring is capable of additive color mixing and in turn can simulate the color of the main projected light projecting from the main output aperture or output lens of the multiparameter light.

Abstract: A backlight assembly and a liquid crystal display having the same are provided. The backlight assembly includes a plurality of LED packages mounted on a substrate, and a lens unit that seals the LED packages. The lens unit includes a plurality of convex lenses arranged to partially overlap with each other or arranged proximate to each other. Light emitted from LED units in the LED packages is diffused by the interface between the lens unit and another material, such as air, to provide light incident on a light guide plate.

Abstract: A multiparameter light is disclosed, which incorporates an LED (light emitting diode) tracking ring surrounding a main output lens. The LED tracking ring is capable of additive color mixing and in turn can simulate the color of the main projected light projecting from the main output aperture or output lens of the multiparameter light.

Abstract: Disclosed are various embodiments of system, devices, components and methods for controllably configuring the color of light emitted by an automotive LED illumination system. The colors of light emitted by LEDs, or clusters or groups of LEDs, may be varied smoothly or in step-wise fashion to produce virtually any desired pattern of collimated light. Such a pattern may be varied in respect of time or space, or both time and space. Light and other types of sensors may be employed to provide feedback control as a further means of controllably configuring the color of light emitted by such a system in response to changes in external and other conditions.

Abstract: A lighting arrangement (1) of a space-saving configuration, including a fluorescent lamp (2) and at least one light emitting diode (6), which is suitable in particular for use for interior lighting of an aircraft. In this case the light emitting diode (6), viewed in the direction of a main lighting direction (13), is arranged behind the fluorescent lamp (2). The lighting arrangement (1) further includes a light guide element (10) which is adapted to guide light (L2) emitted by the light emitting diode (6) past the fluorescent lamp (2) and emit it substantially in the main lighting direction (13).

Abstract: An illumination device comprising at least four luminous units (1, 2), the light emitted by at least two of the four luminous units (1, 2) being suitable for being mixed to form white light. Moreover, an apparatus (3) for dimming at least one of the four luminous units (1, 2) is provided. White light having a desired color temperature (CCT) and a high color rendering index can be generated by means of the illumination device.

Abstract: An electrical illumination device for generating saturated colors with at least two illumination units. The illumination units each have a discharge vessel with a low-pressure discharge and a phosphor coating on the inner wall of the vessel, characterized in that at least one illumination unit has a discharge vessel with a xenon fill and a dielectric barrier discharge.

Abstract: The present invention provides an illumination apparatus comprising one or more first light-emitting elements and one or more second light-emitting elements and a control system configured to control the operation of the one or more first and one or more second light-emitting elements. As the illumination apparatus according to the present invention is configured to generate utility illumination using two different and substantially monochromatic light-emitting element light sources, the light pollution resulting from the utility illumination generated by the illumination apparatus is reduced, when compared to a polychromatic light source.

Abstract: An illuminating unit having a plurality of light emitting devices and collimators and a projection type image display apparatus using the same are provided. The illuminating unit includes: a plurality of light emitting devices which output light beams of predetermined wavelengths; a plurality of collimators, each having a parabolic reflection surface for reflecting the light beam in a predetermined direction, a mounting section for locating the light emitting device at the focal point of the parabolic reflection surface, a light output surface opposite to the parabolic reflection surface, and a light guide section for guiding the light beam reflected from the parabolic reflection surface to the light output surface; and one or more fixing members having two or more steps for mounting the light emitting devices and the collimators on their top surface. A plurality of light emitting devices and collimators are efficiently arranged in a small space.

Abstract: A lighting device includes a plurality of self-luminous elements formed on a substrate and emitting different wavelengths of light from each other, a hemispherical lens structure formed on the substrate to cover the self-luminous elements, and a plurality of translucent spherical particles covering a surface of the lens structure. Light emitted from the self-luminous elements passes through the lens structure and enters the translucent spherical particles where its direction is largely inclined to scatter due to a difference in refractive index between the translucent spherical particles and air. Consequently, different wavelengths of light from the self-luminous elements are mixed to produce a desired color of light.

Abstract: An illuminated display system and method for prioritizing medical care administered to an injured user, such a soldier in battlefield settings. The illuminated display system may be applied to triage scenarios whereby illuminated signals visually provide the triage status of an injured user at a distance and in low-visibility settings. In particular, the illuminated display system includes a plurality of light emitters. Each light emitter from the plurality of light emitters provides a different predetermined wavelength of light than the other light emitters from the plurality of light emitters. In operation, each respective predetermined wavelength of light provides information relating to the degree of injury or other information associated with the user such that a desired light emitter is selected to display the desired wavelength and, ultimately, the desired information.

Abstract: A liquid crystal display apparatus includes a backlight module and a liquid crystal display panel. The backlight module includes a back plate and a plurality of lamp sets. The lamp sets are disposed on the back plate. Each of the lamp sets includes a plurality of lamps for emitting lights of at least two colors. The liquid crystal display panel is disposed adjacent to the backlight module. A light emitting unit is also disclosed.

Abstract: A surface light source device having LED clusters arranged in a matrix of rows and columns on a board. Each of the LED clusters includes red, green and blue LEDs arranged in a triangle. The LED clusters are grouped into A, E, C and D, which have the red LEDs located top, right, bottom and left, respectively, from a center of the triangle. The matrix of the LED clusters includes alternating first and second type rows arranged repeatedly from top to bottom of the matrix, terminating with the second type row. The first type rows each have first type cluster arrays of the LED clusters arranged in a repeating order of E, C, D and C from left to right. The second type rows each have second type cluster arrays of the LED clusters arranged in a repeating order of A, D, A and D from left to right.

Abstract: An illumination light unit includes at least two light sources that generate light at different wavelengths. The illumination light unit also includes a reflecting cavity having one or more reflectors and a controlled transmission mirror disposed at an output of the reflecting cavity. The controlled transmission mirror includes an input coupling element, an output coupling element and a first multilayer reflector disposed between the input and output coupling elements. At least some of the light from the light sources is reflected within the reflecting cavity by the one or more reflectors and is mixed. Light passes out of the reflecting cavity through the controlled transmission mirror. The illumination light unit may be used for illumination purposes, or as part of a backlight for illuminating a display.

Abstract: An light emitting apparatus which illuminates an illumination area has a first light source which emits a first light, a second light source which emits a second light, a wheel which is provided with a transmission filter area which transmits the first light, and a reflection area which reflects the second light, a wheel driving unit which controls a rotation of the wheel, and drives the wheel, a light emitting optical unit which leads the first light which transmits the transmission filter area, or the second light which is reflected by the reflection area to the illumination area, in which the light which is led to the illumination area by the light emitting optical unit is at least two colors of light which are successively changed over in the time series.

Abstract: An illumination apparatus comprises a plurality of luminous bodies as light sources, luminous body drive portions configured to drive to light each of the plurality of luminous bodies, an optical member configured to lead and apply light exiting from a luminous body lighted by the luminous body drive portion to an illumination target area, a light control member configured to perform change of a light path of the light exiting from the luminous body with which the illumination target area is illuminated and/or movement of the luminous body, a movable portion configured to operably drive the light control member, and a light selection portion configured to control the movable portion and/or the luminous body drive portion in such a manner that light with which the illumination target area is selected from light exiting from the plurality of luminous bodies.

Abstract: A backlight uses an array of red, green, and blue LEDs in a mixing chamber. The mixing chamber has reflecting surfaces and a top opening for illuminating LCD layers. A desired brightness profile and better color uniformity are obtained by using techniques including arranging the LEDs in certain sequences and patterns, providing a specular ring at the base of each LED, attenuating the brightness of the LEDs at the edges, and using widely separated diffusers in the mixing chamber. The arrangement, selection, and control of the multicolored LEDs may be tailored to achieve any desired white point specified by the display manufacturer.

Abstract: A nightlight provides therapeutic effects on the human body and mind including promoting relaxation, sleep and wakefulness. The nightlight includes a housing, a light source, a central processor, one or more controls, and a power supply. The light source produces at least three illumination modes including a sleep readiness mode at about 40 lumens which preferably includes only light from the blue and yellow portions of the visible light spectrum, a sleep help mode providing substantially monochromatic light in the blue or green spectrum, and a wake-up mode providing substantially full spectrum light at approximately 1,600 lumens. The nightlight may be incorporated into a bedside alarm clock. The alarm function may be provided by illumination of one of the three nightlight's illumination modes, which is preferably the wake up mode which may illuminate slowly or substantially immediately to full brightness.

Abstract: A vehicular marker lamp including a lamp cover that contains nanosized fluorescent material and light sources that excite the fluorescent material so as to cause the lamp cover to emit colored light.

Abstract: A method for modulating warm color light here disclosed includes the steps of modulating a white light source for generating white light, setting at least one selected brightness-adjust Light Emitting Diode (LED) for generating modulated light, adjusting the brightness of the selected brightness-adjust LED, and mixing the white light and the modulated light after adjusting the brightness of the selected brightness-adjust LED, then to generate the warm color light.

Abstract: A flash module includes a first light source emitting a first primary light has a first wavelength-converting overlay disposed on the first light source to provide a first color of light. The first wavelength-converting overlay includes a first plurality of quantum dots dispersed in a matrix material. The flash module also includes a second light source providing a second color of light.

Abstract: An illumination system, such as might be used for illuminating a projection system, includes at least a first source of incoherent light capable of generating light in a first wavelength range. The system also includes a body containing a fluorescent material that emits light in a second wavelength range, different from the first wavelength range, when illuminated by light in the first wavelength range. The body has an extraction area and at least some of the light at the second wavelength is internally reflected within the body to the extraction area.

Abstract: A lighting arrangement (1) which is advantageous in particular for the interior lighting of a vehicle or aircraft. The lighting arrangement (1) includes a plurality of light emitting diodes (2a-2e, 3a-3d, 4a-4c) of at least two groups (9, 10, 11), the light emitting diodes being arranged on a surface element (5, 5?, 5?), wherein each group (9, 10, 11) includes a light emitting diode or a plurality of light emitting diodes (2a-2e; 3a-3d; 4a-4c) of the same kind and light emitting diodes (2a-2e, 3a-3d, 4a-4c) of different groups (9, 10, 11) are of different kinds. The light emitting diodes (2a-2e, 3a-3d, 4a-4c) are distributed in a two-dimensional geometrical overall pattern (13) on the surface element (5, 5?, 5?).

Abstract: An illumination device includes trains of lead frames and a plurality of light-emitting diodes provided in series on the lead frames. The trains of the lead frames are juxtaposed, and the light-emitting diodes are sealed with a reflecting resin and a transparent resin over a substrate. Gaps are provided between the lead frames and the substrate. The illumination device is employed as a backlight source in a display device.

Abstract: The invention relates to a luminaire comprising a plurality of light sources fixedly located in a plurality of positions and comprising at least an electroluminescent diode. Said sources are focused by the same optical system fixed relative to the plurality of sources. Said luminaire comprises electronic means for dimming sources in their emission intensity independently of one another and as a function of their respective positions relative to said optical system. The invention provides an output beam having a dimmable photometric distribution in time and in space at the output of said optical system.

Abstract: An apparatus is disclosed incorporating a plurality of light sources, such as a plurality of lighting emitting diodes, and a beam altering mechanism for altering the light projected by the plurality of light sources. Several mechanisms for altering the beam produced by the plurality of light emitting diodes are disclosed. The present invention can be used in for example hand held flashlights and theatrical lighting. The present invention in one embodiment discloses a hand held flashlight incorporating a plurality of light sources and a beam altering mechanism capable of changing the color of the emitted light beam produced by the flashlight. The beam altering mechanism may be comprised of an aperture device, which may be an aperture plate, provided with a plurality of apertures that are strategically aligned with the individual light beams emitted from each of the plurality of light sources.