Abstract: A light source having a lead frame, a body, and a plurality of dies, each die having an LED thereon is disclosed. The body includes a top surface, a bottom surface and a plurality of side surfaces. The lead frame includes first, second, and third sections, the first section includes a die mounting area having a first protrusion that passes through the body and terminates in a pad on the bottom surface. The second and third sections each include a protrusion that is bent to form first and second leads that run along one of the side surfaces. Each die is bonded to the die mounting area such that a first contact is electrically connected to the die mounting area, and a second contact is connected to one of the second and third sections. The first protrusion of the first section provides improved heat transfer.

Abstract: A reading lamp (100) includes a lamp holder (20), a lampshade (40), a bracket (30) connecting the lamp holder with the lampshade, and a white light illuminator (50) received in the lampshade. The white light illuminator includes a light mixer (52), and at least a group of solid-state, light emitting elements (544) arranged to at least one side of the light mixer. The at least a group of solid-state, light emitting elements includes three kinds of solid-state, light emitting elements which respectively emit red, green and blue lights. The light mixer reflects, refracts and mixes the red, green and blue lights to obtain white light which directly radiates and spreads from a light emitting surface (521) of the light mixer.

Abstract: The invention relates to an ornamental light and, more particularly, relates to an ornamental light with polychrome effect. The ornamental light includes at least one illuminant, a support frame with special shape and a film covered on the surface of the support frame. The film includes a transparent base plate and two polychrome films. Each of the polychrome film is stuck to each side of the base plate respectively. The venations of the two polychrome films are perpendicular to each other. The invention provides an ornamental light which can present different polychrome display effect, enough imagination and aesthetic feeling when viewed from different angles.

Abstract: An exemplary LED lamp assembly includes a housing (21), a printed circuit board (22), a LED (23), a light reflective member (24) and a lamp cover (25). The housing includes a top cover (211), a base board (213), a plurality of sidewalls (215) connecting with the top cover and the base board, and an opening (218) defined on one of the sidewalls. The printed circuit board is positioned on the base board. The LED is electrically connected to the printed circuit board. The LED includes a light emitting side surface (233) and a top surface (235) adjoining to the light emitting side surface, a portion of the light emitting side surface facing the opening, and the top surface facing the top cover. The light reflective member is located in the housing for reflecting light from the LED and out via the opening. The lamp cover covers the opening.

Abstract: A portable luminaire includes an optical module, a power source and a housing. The optical module has at least one light emitting diode (LED) that emits light with a wide divergence, a non-imaging optical element and a transparent window. The non-imaging optical element (NIO) has a refractive member located around a LED optical axis and a total internal reflection member located around the refractive member. The refractive member and the total internal reflection member are integrated in a single transparent element having a mutual focal point. The NIO element collects a significant amount of light emitted by the LED with wide divergence located at the focal point to compress the collected light with high efficiency into a required pattern with a generally different angular distribution in a horizontal plane and a vertical plane, and to direct the compressed light outside of the luminaire.

Abstract: An exemplary optical plate includes one or more transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of spherical depressions, a plurality of enclosing V-shaped protrusions, and one or more lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical depressions are formed on the light output surface. The enclosing V-shaped protrusions are formed on the bottom surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.

Abstract: A luminaire contains a main light source the light of which is emitted by the luminaire, and an additional light source the light of which is mixed with the light of the main light source before the emission thereof. A part of the light issued by the additional light source is, with respect to the light emitted by the main light source, issued by the luminaire housing directed to the side or to the rear side.

Abstract: A fluorescent light tube retrofit with light emitting diodes (LEDs) that evenly distribute light to avoid bright spots is disclosed. One tube in the form of a conventional fluorescent tube includes two LEDs mounted to the tube on opposite sides of a single circumference of the tube. The LEDs can face the center of the tube, or the LEDs can be offset facing relative to the center of the tube. A reflecting surface can be disposed inside the tube to reflect light evenly toward an arc of the tube. Alternatively, at least one LED can be oriented to direct light into a light pipe that curves around the interior of the tube.

Abstract: A light emitting apparatus having a light source for emitting short wavelength radiation and an optic device configured to receive the radiation emitted from the light source. A device directs at least some of the short wavelength radiation emitted from the light source into the optic device and a down conversion material receives at least some of the short wavelength radiation directed into the optic device in one spectral region and emits the radiation in another spectral region.

Abstract: An LED package comprises an LED for emitting LED light, and a conversion material remote to said LED for down-converting the wavelength of LED light. The package further comprises a reflector directing at least some of the LED light toward the conversion material, the conversion material down-converting the wavelength of at least some of the reflected LED light. A method for emitting light from an LED package comprising providing an LED, reflector and conversion material, and emitting light from said LED, at least some of the LED light emitted toward the reflector. The method further comprises reflecting at least some of the LED light toward the conversion material, and converting at least some of said reflected LED light at the conversion material. At least some of the converted reflected LED light is emitted by the LED package.

Abstract: An optical sheet has a large number of cylindrical lens elements provided successively on one of principal faces thereof. The cylindrical lens elements have a finite focal distance on the emission side of illumination light and have an aspheric face of a leftwardly and rightwardly symmetric sectional shape. Where a Z axis is taken in parallel to a normal line direction to the optical sheet and an X axis is taken in a direction of the row of the cylindrical lens elements, a cross sectional shape of the cylindrical lens elements satisfies Z=X2/(R+?{square root over ( )}(R2?(1+K)X2))+AX4+BX5+CX6+ . . . (where R is the radius of curvature of a distal end vertex, K is a conic constant, and A, B, C, . . . are aspheric coefficients).

Abstract: A luminaire is provided with a one-sided diffuser, located a predefined distance below the light output ports, in order to efficiently distribute light through an upper smooth surface and a lower surface having light altering tracks where each wherein each light altering tracks distributes its received light over a range of angles within a predefined cutoff angle.

Abstract: A plurality of LEDs are arrayed in the X-direction, and a light-guide plate is provided facing the LEDs. A plurality of prisms extending in the Y-direction are formed on a light-receiving surface of the light-guide plate. A plurality of prisms are additionally formed on a light-emitting surface of the light-guide plate. Light emitted from the LED is thereby divided into a plurality of light beams by the prisms, and a portion of the light is condensed toward the prisms. Light that is condensed toward the prisms is divided in a plurality of directions and transmitted in the light-guide plate. When the light reaches another prism, the light is reflected by the prism and emitted from the light emitting surface.

Abstract: An illumination system includes a backlight housing, a plurality of light valves coupled to the backlight housing, and a plurality of light sources arranged in the backlight housing and optically coupled to the light valves. The illumination system may further include a light-scattering substrate optically coupled between the plurality of light sources and the light valves, and a plurality of light modulating dots patterned on the substrate to modulate transmitted intensity of light from the plurality of light sources to achieve increased luminance uniformity by decreasing banding caused by the separated light sources. The light modulating dots may include comprise reflective dots, transmissive dots, absorptive dots, or a combination thereof.

Abstract: Disclosed is a portable terminal having a transparent member at an outside thereof, including a terminal body having at least one light emitting member, and a transparent cover member partially forming an outer appearance of the terminal body and transmitting light from the light emitting members to the outside. The transparent cover member includes a light diffusion pattern portion for scattering light from the light emitting members so as to minimize an occurrence of a case in which a specific position where the light emitting member is formed is brightly illuminated but other position is dimmed.

Abstract: An elongated flexible lighting system according to the present invention comprises an array of light sources that are illuminated by electric power. It further comprises an elongated translucent extrusion of flexible material. The array of light sources is integral to the extrusion with said extrusion transmitting and dispersing the light from the array such that the lighting system gives the appearance that the array of light sources is a continuous light source. The elongated lighting system can be used for many different applications including, but not limited to, the lighting of structural features and illumination of sign features.

Abstract: A prism sheet changes a direction of light propagation by reflecting light launched with an intensity distribution of a predetermined angle range wherein: a reflective surface for perfect reflection of light includes a higher order surface constructed by at least a small curvature surface and a surface different from the small curvature surface.

Abstract: A prism sheet, including a reflective surface having a first side formed by at least a small curvature surface and a surface different from the small curvature surface, and a second side formed by a planar surface.

Abstract: A back light structure includes lamps for supplying light to an LCD panel, and a micro-lens formed on over or below the lamps, the micro-lens having a plurality of concave portions or convex portions.

Abstract: An LED-based light for replacing a conventional fluorescent tube in a fixture is provided. The LED-based light includes an elongate light transmitting rod defining a bore and at least one LED positioned at one or both ends of the rod and oriented to produce light longitudinally into a portion of the rod radially outward of the bore. At least one connector is physically coupled to an end of the rod and electrically coupled to the at least one LED. The at least one connector is adapted for physical and electrical connection to the fixture. In operation, the directional light produced by the at least one LED is dispersed by way of reflection, refraction, and/or diffusion while traveling longitudinally through the rod to reduce the appearance of bright spots.

Abstract: A light mixer includes a light mixing plate, a plurality of light sources, a plurality of upper reflecting layers, a lower reflecting layer, and a semi-permeable layer. The light mixing plate has an upper surface, a lower surface, a peripheral surface, and a plurality of receiving holes. The light sources are respectively located in the receiving holes. The upper reflecting layers are respectively located right above the light sources. The lower reflecting layer is located on the lower surface of the light mixing plate. The semi-permeable layer wraps the peripheral surface of the light mixing plate. A diffuser is located above the light mixers.

Abstract: An exemplary backlight module (200) includes a light emitting unit (220). The light emitting unit includes a plurality of light sources (227, 228, 229) configured for providing color light beams respectively, and a mixer (222) configured for mixing the color light beams into white color beams. The mixer includes a plurality of light guide structures (223) respectively corresponding to the light sources and a mixing body (226) connected to the light guide structures. The light guide structures are configured for guiding color light beams emitted from the light sources to the mixing body. The color light beams emitted from all the light sources being partially mixed into white light beams in the mixing body.

Abstract: The present invention relates to an optical sheet for a backlight unit of a TFT-LCD and a TFT-LCD including the same. The optical sheet of the present invention includes a transparent base sheet, and a light diffusion layer in which a diffusion pattern comprised of a plurality of protrusions is formed on the transparent base sheet. The diffusion pattern satisfies an aspect ratio of 0.8 or more, the aspect ratio being a ratio of a radius (l) of a unit body portion of the protrusion, which is formed on the transparent base sheet, to a thickness (d) of the protrusion.

Abstract: An exemplary optical plate (20) includes a transparent plate (21) and a light diffusion layer (22). The transparent plate includes a light output surface (212), a light input surface (211) opposite to the light output surface, and a plurality of spot-shaped recessed portions (213) formed on the light input surface. The light diffusion layer is coated on the spot-shaped recessed portions. A backlight module using the optical plate is also provided, a plurality of point light sources of which being positioned in one-to-one correspondence with the spot-shaped recessed portions. The backlight module using the optical plate can have a thin body with a good optical performance.

Abstract: An elongated flexible lighting system according to the present invention includes an array of light sources that are illuminated by electric power. It further includes an elongated translucent extrusion of flexible material. The array of light sources is integral to the extrusion with said extrusion transmitting and dispersing the light from the array such that the lighting system gives the appearance that the array of light sources is a continuous light source. The elongated lighting system can be used for many different applications including, but not limited to, the lighting of structural features and illumination of sign features.

Abstract: In a liquid crystal display device using LEDs emitting a plurality of colors as the light sources, diffusion materials are dispersed in a light guide plate. The light guide plate is used to guide and mix the plurality of colors with one another. The diffusion materials are made of a material having optical characteristics, such as a refractive index, different from those of a base material of the light guide plate.

Abstract: Light emitting device multi-chip lighting fixtures are disclosed. According to one aspect, a lighting fixture is provided, the lighting fixture having a plurality of light-emitting devices operable for emitting light onto a light diffuser. Where each of the light-emitting devices produces light having a non-uniform luminous intensity, each of the light-emitting devices is positioned with respect to one another to illuminate the surface of the light diffuser with an aggregate light having a substantially uniform luminous intensity. In this way, the light cast by the lighting fixture appears to have a substantially uniform luminous intensity.

Abstract: An exemplary prism sheet includes a main body having a surface. The surface defines a plurality of first V-shaped micro-protrusions and second V-shaped micro-protrusions thereon. Each of the first V-shaped micro-protrusions extends along a first curved direction. Each of the second V-shaped micro-protrusions extends along a second curved direction. The first V-shaped micro-protrusions intersect with the second V-shaped micro-protrusions. The present prism sheet and the liquid crystal display device using the same can efficiently decrease moire pattern interference between the prism sheet and the pixel pitch of LCD panel.

Abstract: An optic film has a surface on which a plurality of rib-like micro light guides is formed. Each light guide includes a plurality of ridges, which are of different height and shows variation of height. Either a high ridge or a low ridge of the light guide is made a continuous left-and-right wavy configuration and/or a continuous up-and-down height-variation configuration. Thus, light transmitting through the optic film and converged by the light guides leaves the optic film in a form that is not very regular so as to facilitate subsequent use of the light in for example a liquid crystal display panel.

Abstract: The invention provides a diffusion plate and a backlight module. The backlight module includes pluralities of light sources, a reflector and a first diffusion plate. The light sources, which are disposed in the reflector, are spatially arranged. The first diffusion plate is disposed on the light sources. There are pluralities of bar-shaped first patterns and second patters, which are arranged in the alternating way, disposed on the emission surface of the first diffusion plate. The contours of first patterns and second patterns are arc shaped. The height of first patterns is H1, and the width is W1. The height of second patterns is H2, and the width is W2. The value of H1/W1 is between 0.4 and 1. The ratio of H2/W2 versus H1/W1 is between 0.6 and 0.9.

Abstract: A direct type illuminating device includes a light source unit, a reflector plate, a diffuser plate, and a lens module. The light source unit provides source light beams. The reflector plate and the diffuser plate are spaced at an interval from each other, and the light source unit is interposed between the reflector plate and the diffuser plate. The lens module surrounds the light source unit such that the lens module is interposed between the light source unit and the reflector and diffuser plates. An outer curved surface of the lens module has a radius of curvature different from a radius of curvature of an outer curved surface of the light source unit such that the source light beams provided by the light source unit are refracted by the lens module to result in change of traveling directions of the source light beams.

Abstract: An organic electroluminescent device includes, on a substrate, a pixel having a luminescent functional layer which is sandwiched by a first electrode and a second electrode, and a unit pixel group composed of a plurality of the pixels. A scattering portion which scatters luminescent light of the luminescent functional layer is provided in a pixel selected from the unit pixel group.

Abstract: A lighting fixture for providing illumination comprising a housing, a printed circuit board, and a plurality LEDs connected to the printed circuit board. Optionally an emergency LED may also be included. A heat sink is connected to the housing and printed circuit board. Each of the plurality of the LEDs is mounted on the heat sink. A reflector is disposed inside the housing such that the light from the LEDs is mixed together and projected out of the illumination end of the housing by the surface of the reflector. The lighting fixture is received into a mounting flange assembly. A method for providing illumination using the above.

Abstract: A transmittance adjuster unit includes multiple transmittance adjusters arranged in a predetermined pattern, if the pattern density is ?(x, y), the maximum luminance Fmax of the light emitted from the light emission plane of a planar illumination device when the unit is not provided is 1, the minimum luminance is Fmin, and the relative luminance with respect to the maximum luminance Fmax of the light emitted from a predetermined position (x, y) of the emission plane is F(x, y), the relationship between the luminance F(x, y) and the pattern density ?(x, y) satisfies the following expression: ?(x, y)=c{F(x, y)?Fmin}/(Fmax?Fmin), wherein 0.5?c?1. This unit is thin and lightweight, and can reduce unevenness of the luminance without reducing the average luminance of the incident light. The planar illumination device includes the transmittance adjuster unit and a liquid crystal display device includes the planar illumination device.

Abstract: A backlight unit, and a display device having the backlight unit, includes a light source, the light source formed to directly illuminate a display panel, and an optical plate arranged over the light source, wherein the optical plate includes a first surface and a second surface that faces the first surface, and the first surface is different in height from the second surface.

Abstract: A generally planar illumination, display, or backlighting device is disclosed, including a generally planar arrangement of side emitting light emitting diode (LED) devices generating side emitted illumination, and a generally planar arrangement of wavelength conversion elements arranged coplanar with the generally planar arrangement of side emitting light emitting diode (LED) devices. The wavelength conversion elements are interspersed amongst the side emitting LED devices and configured to wavelength convert the side emitted illumination generated by the side emitting LED devices. A display device using such a generally planar illumination device is also disclosed, in which a liquid crystal display (LCD) panel is backlit by the generally planar illumination device.

Abstract: An exemplary prism sheet includes a transparent main body. The main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the main body. The first surface defines a plurality of elongated, arc-shaped depressions. Each elongated, arc-shaped depression has a varying depth forming a first smooth wavy pattern. A plurality of elongated, arc-shaped protrusions protrudes from the second surface. Each elongated, arc-shaped protrusion has a varying height forming a second smooth wavy pattern. A backlight module using the present prism sheet is also provided.

Abstract: A microchip matrix light source module includes at least two LEDs formed on a surface of a substrate. The light source further includes a light reflector formed on a surface upon which the LEDs are formed and interposed between the LEDs and configured to reflect and thereby redirect laterally emitted light from the two LEDs. The light reflector may include an inner body. The body may be covered, in part or in whole, with a light reflecting layer such as a metal layer. The body of the light reflector may include a layer corresponding to a layer in one of the two LEDs.

Abstract: An LED indication lamp has desired luminous intensity distribution characteristics without need for any light-emitting diode of a special shape. The LED indication lamp comprising a plurality of light-emitting diodes and having specified luminous intensity distribution characteristics is further provided with a condenser lens. The light-emitting diodes are arranged in a pattern corresponding to a luminous intensity distribution pattern determined according to the luminous intensity distribution characteristics. The light-emitting diodes thus arranged and the condenser lens are arranged so that light emitted from the light-emitting diodes in the luminous intensity distribution pattern through the condenser lens satisfies the luminous intensity distribution characteristics.

Abstract: A scattering module and a backlight module comprising the scattering module are provided. The backlight module includes a plurality of light sources, while the scattering module includes a plurality of scattering elements. The scattering elements are disposed correspondingly to the light sources so that the scattering elements have different linearly arranged densities in different directions. Thereby, the light generated from the backlight module would be projected onto the display panel evenly with a uniform brightness.

Abstract: An enhanced electroluminescent sign containing a volumetric, anisotropic scattering element to control the angular spread of light from the sign and the spatial luminance uniformity of the sign. The anisotropic scattering element contains one or more regions of asymmetrically-shaped light scattering particles. The angular spread of light leaving a sign from a light emitting source can be efficiently controlled by using a thin, low cost, volumetric, anisotropic scattering elements to angularly and spatially distribute light, permitting the reduction in number of light sources, a reduction in power requirements, or a more tailored viewing angle.

Abstract: A backlight unit includes a substrate, a plurality of light emitting diodes disposed at corners of a polygon or arranged side by side on the substrate, and a plurality of lenses coupled to the light emitting diodes for directing the lights emitted from the light emitting diodes in a predetermined direction. The light emitting diodes are comprised of at least three light emitting diodes capable of cooperating with each other to create a white light. Each of the lenses has an asymmetrical irradiation characteristic such that the lenses allow the lights to be irradiated on a predetermined target region and uniformly mixed with each other. The lenses are designed and oriented to irradiate the lights in an elliptical shape close to a rectangle toward a top portion of the backlight unit.

Abstract: An exemplary prism sheet consists of a transparent main body. The transparent main body includes a surface and a plurality of spherical micro-protrusions. The spherical micro-protrusions are integrally formed on the surface. A backlight module using the present prism sheet is also provided.

Abstract: A light emitting diode (LED) illumination device (10) includes an LED (11), a frustum-shaped light guide member (12) and a light diffusing plate (13). The frustum-shaped light guide member (12) has a light input surface (120) and a light output surface (122) opposite to the light input surface (120). The light guide member (12) tapers from the light output surface (122) to the light input surface (120). The light input surface (120) is optically coupled to the LED (11), and the light diffusing plate (13) is optically coupled to the light output surface (122) of the light guide member (12).

Abstract: A display includes a display lightguide, on which a shape of a display character is formed in three dimensions, a light source, emitting a light toward the display lightguide, and a light collection portion, provided between the light source and the display lightguide, and having a light reflection face formed like a parabolic face which employs a straight line perpendicular to a light receiving face of the display lightguide as an axis thereof.

Abstract: An exemplary optical plate (30) includes a transparent plate (321) and a light diffusion layer (322). The transparent plate includes a light output surface (3213), a light input surface (3211) opposite to the light output surface, and a plurality of elongated depressions (3215) formed on the light input surface. The light diffusion layer is coated on the light input surface and filled with the elongated depressions. The light diffusion layer covers the light input surface. The tight diffusion layer includes transparent resin matrix material, first light diffusion particles and second light diffusion particles dispersed in the transparent resin matrix material uniformly. A refractive index of the second light diffusion particles is greater than that of the first light diffusion particles. A backlight module using the present optical plate is also provided. The present backlight module using the optical plate can have a thin body with a good optical performance.

Abstract: A LED louvers and lighting system is described. The system can utilize interchangeable LED light assemblies placed within LED light modules. The light output from the light modules can be directed and diffused via a selection of louvers. A LED controller can be utilized to allow a user to control the light output intensity from the light modules. The LED controller provides a smooth range of changing brightness levels. The system can be controlled via a wired switch and/or a radio frequency remote control. Additionally, the LED light modules are daisy chainable and can utilize low-voltage wiring for ease of installation.

Abstract: An exemplary prism sheet includes a transparent main body. The main body includes a first surface and a second surface. The first surface is opposite to the second surface. A plurality of elongated arc-shaped depressions are defined in the first surface. A plurality of micro-depressions are defined in the second surface. Each micro-depression is defined by at least three connecting sidewalls. A transverse width of each sidewall of each micro-depression progressively decreases with increasing distance from the second surface. A backlight module using the present prism sheet is also provided.

Abstract: An exemplary prism sheet (20) includes a transparent main body. The main body includes a first surface (201), a second surface (202) opposite to the first surface, a plurality of first micro-depressions (203) defined in the first surface, and a plurality of second micro-depressions (204) defined in the second surface. Each of the first micro-depressions is conical frustum-shaped. Each of the first micro-depressions has four inner side surfaces connected to each other. A transverse width of each inner side surface of the first micro-depressions progressively decreases with increasing distance from its bottom surface that are coplanar with one of the first surface of the transparent main body. A backlight module (200) using the present prism sheet is also provided.

Abstract: A rotational obstruction and beacon signaling apparatus, in which chip-on-board (COB) packaged light emitting diodes (LEDs) are employed to provide a flashed emission pattern with high luminous intensity. The flash sequence of individual LEDs is controlled by an electronic timing circuit to simulate a rotational or other motional signaling effect.