Abstract: An LED backlight module comprises a plurality of LED source and a light expansion board. The light expansion board further comprises a substrate and a plurality of lens formed on the substrate. The substrate includes a plurality of receiving holes corresponding to the plurality of LED source for receiving the plurality of LED source therein. The light expansion board includes a material of glass. The light transmittance of the glass is equal to or larger than 95%, the chromatic aberration of the glass is equal to or less than 3/1000, the heat resistance of the glass is equal to or larger than 750° C.

Abstract: A light diffusion member includes a matrix and a number of quantum dots uniformly dispersed in the matrix. The matrix is made of epoxy resin and ammonium persulfate. The quantum dots have a mass percentage of about 10% to about 20% of the total mass of the light diffusion member. A light emitting device using the light diffusion member and a display device using the light emitting device are also provided.

Abstract: An optical film to visually reduce frame size of individual display units within a single large display includes four film portions connected to each other to form a rectangular frame of each individual display unit. Each film portion has strip-shaped micro-structures of triangular cross-section, and includes a bottom surface, a first side surface, and a second side surface. The bottom surfaces of the micro-structures are connected to each other. The first side surfaces and the second side surfaces are obliquely connected, the second side surface of one micro-structure being at the outermost side of each film portion. Angle ?1 between the first side and bottom surface of each micro-structure is less than angle ?2 between the first side surface and the second side surface and the sum of first and second angles ?1 and ?2 is less than 90°.

Abstract: An optical film to visually reduce frame size of individual display units within a single large display includes four film portions connected to each other to form a rectangular frame of each individual display unit. Each film portion has strip-shaped micro-structures of triangular cross-section, and includes a bottom surface, a first side surface, and a second side surface. The bottom surfaces of the micro-structures are connected to each other. The first side surfaces and the second side surfaces are obliquely connected, the second side surface of one micro-structure being at the outermost side of each film portion. Angle ?1 between the first side and bottom surface of each micro-structure is less than angle ?2 between the first side surface and the second side surface and the sum of first and second angles ?1 and ?2 is less than 90°.

Abstract: An optical fiber coupling connector includes a board, a light receiving device, two light emitting devices, a controller and an optical coupling lens. The optical coupling lens includes three main bodies, each includes a bottom surface, a top surface, an alignment surface, a first and a second side surface, a third side surface obliquely connected to the first side surface, and a fourth side surface obliquely connected to the second side surface and connected to the third side surface at a second edge. The alignment surface, the first side surface, the third side surface, the fourth side surface and the second side surface are connected to each other end to end in that order. The third side surface of each one of the main bodies contacts the fourth side surface of an adjacent one of the main bodies. At least three optical fibers positioned to the optical coupling lens.

Abstract: A photoelectric conversion device includes a circuit board, a light emitting module, a light receiving module, and an optical coupling lens. The circuit board includes two positioning portions apart from each other. The light emitting module and the light receiving module are mounted on the circuit board, and are spaced apart from each other. The optical coupling lens includes a bottom surface facing the light emitting module and the light receiving module, two first converging portions formed on the bottom surface, and two locating portions. Centers of the positioning portions are aligned with centers of the locating portions to ensure perfect alignment of the light emitting module and the light receiving module with the first converging portions.

Abstract: A light-redirecting optical film includes a continuous plurality of micro structures. The micro structures have a common bottom surface and each micro structure includes a first curved surface and a second curved surface. The first curved surface is convex towards the second curved surface. The second curved surface rises from the bottom surface. The first curved surface and the second curved surface meet along a top edge. The curvature of the top edges in the optical film is the same. The first curved surface is a total reflecting surface. A narrow frame display device is also presented.

Abstract: A method includes having test plate and light source, the test plate having matrix of first pattern-dots and equally divided into blocks. Intersecting surfaces between the first pattern-dots and the first bottom surface have the same radius rx. Detecting a luminous flux ?X of each block and a total luminous flux ?t of the test plate when light source is activated; calculating an average luminous flux ?ave; calculating the radius rx1 of the first pattern-dots in each block assuming that an actual luminous flux of each block is equal to the average luminous flux according to the formula rx1=rx×sqrt (?ave/?X). Providing a substrate having the same structure as the base and the substrate being divided into blocks according to the same principle as the test plate. Forming second pattern-dots having the same arrangements as the first pattern-dots and having radius of rx1 in each block.

Abstract: An optical fiber coupling connector includes a board, a light receiving device, two light emitting devices, a controller and an optical coupling lens. The optical coupling lens includes three main bodies, each includes a bottom surface, a top surface, an alignment surface, a first and a second side surface, a third side surface obliquely connected to the first side surface, and a fourth side surface obliquely connected to the second side surface and connected to the third side surface at a second edge. The alignment surface, the first side surface, the third side surface, the fourth side surface and the second side surface are connected to each other end to end in that order. The third side surface of each one of the main bodies contacts the fourth side surface of an adjacent one of the main bodies. At least three optical fibers positioned to the optical coupling lens.

Abstract: An optical fiber coupling connector includes a board, a light receiving device, two light emitting devices, a controller and an optical coupling lens. The optical coupling lens includes three main bodies, each includes a bottom surface, a top surface, an alignment surface, a first and a second side surface, a third side surface obliquely connected to the first side surface, and a fourth side surface obliquely connected to the second side surface and connected to the third side surface at a second edge. The alignment surface, the first side surface, the third side surface, the fourth side surface and the second side surface are connected to each other end to end in that order. The third side surface of each one of the main bodies contacts the fourth side surface of an adjacent one of the main bodies. At least three optical fibers positioned to the optical coupling lens.

Abstract: A lens includes a bottom face, a light incident face defined in the bottom face, a plurality of light reflective faces connecting the light incident face with the bottom face, and a light emerging face opposite to the light incident face. The light incident face includes a first face and a plurality of second faces alternating with the light reflective faces. The light reflective faces are flat faces parallel to an optical axis of the lens. An LED unit using the lens is also disclosed.

Abstract: An optical coupling lens includes three main bodies, the main body further includes a bottom surface, a top surface opposite to the bottom surface, an alignment surface, a first side surface, a second side surface, a third side surface, and a fourth side surface. The alignment surface, the first side surface, the second side surface, the third side surface, and fourth side surface are interconnected between the top surface and the bottom surface, and are connected to each other end to end. The three main bodies connect to each other end to end, and the third side surface of one of the main bodies correctly aligns with the fourth side surface of another of the main bodies.

Abstract: A light source module includes a light source and an optical lens assembly covering the light source. The optical lens assembly includes an optical lens, a reflecting member located on the optical lens, and a reflecting film formed on an outer circumferential surface of the reflecting member. The optical lens includes a main portion and a protruding portion. The light emitting face includes a lateral face extending upwardly from the connecting face and a top surface of the protruding portion, and the top surface of the protruding portion is recessed inwardly towards and located above the light incident face. The reflecting member is conical, the reflecting member is invertedly located on the protruding portion, a tip of the reflecting member is inserted into an inside of the optical lens from the protruding portion, and the reflecting film faces the top surface of the protruding portion.

Abstract: A light-emitting device includes a base and a light source and a diverging unit placed on the base. The diverging unit has a divergent lens and a diverging ring. The divergent lens includes a light incident surface, a light exiting surface, and a side surface. The side surface is connected to the light incident surface and the light exiting surface. The divergent lens defines a receiving space and the receiving space extending into the divergent lens from the light incident surface towards the light exiting surface. The light source is received in the receiving space. The diverging ring is positioned on the light exiting surface and in-line with the light source so that the diverging ring reflects light from the light source transmitted through the divergent lens in multiple directions.

Abstract: A light source module includes a light source and an optical lens assembly covering the light source. The optical lens assembly includes an optical lens, a reflecting member located on the optical lens, and a reflecting film formed on the reflecting member. The optical lens includes a main portion and a protruding portion protruding upwardly from the main portion. The reflecting member is conical. The reflecting member is invertedly located on the protruding portion of the optical lens. A tip of the reflecting member is inserted into an inside of the optical lens from the protruding portion. The reflecting member has a top surface and an outer circumferential surface. A center of the top surface of the reflecting member is recessed inwardly, whereby a concave surface is formed. The concave surface oriented upwardly and outwardly relative to the light source. The reflecting film is distributed on the concave surface.

Abstract: A lens includes a bottom face, a light incident face defined in the bottom face, a light emerging face opposite to the bottom face and a lateral face connecting the light emerging face with the bottom face. An optical axis extends through centers of the light incident face and the light emerging face. The light emerging face includes a plurality of sub-light emerging faces discontinuous from each other. Each sub-light emerging face has a concave face adjacent to the optical axis, and a convex face away from the optical axis.

Abstract: A window glass includes an incident surface, an emergent surface opposite to the incident surface, a bottom surface, and a top surface opposite to the bottom surface. The incident surface and the emergent surface are interconnected between the top surface and the bottom surface. A plurality of sawteeth is defined on the emergent surface. Each sawtooth includes a first surface adjacent to the top surface and a second surface adjacent to the bottom surface. In each sawtooth, an angle between the first surface and the incident surface is over 90 degrees. The second surface and the incident surface cooperatively define an acute angle. The acute angle increases from the top surface down to the bottom surface and causes the redirection of early morning sunlight up to a ceiling of a room or building containing the window glass.

Abstract: A lens includes a light incident face, a light exit face opposite to the light incident face and a plurality of annular stepwise portions formed on the light exit face. The stepwise portions are located at or near a periphery of the light exit face and each stepwise portion has an annular flat surface. A plurality of micro patterns are arranged on the flat surface of one stepwise portion to scatter light exiting from the periphery of the light exit face. A light source module incorporating the lens is also provided. The light source module includes an LED light source. Light from the LED light source enters the lens from the light incident face and leaves the lens from the light exit face after the light is divergently refracted by the lens.

Abstract: A lens includes a main lens, a first light-diffusion capping layer and a second light-diffusion capping layer formed on the top of the main lens in sequence. The main lens includes a light incident surface and a light exit surface opposite to the light incident surface. The main lens defines a recess in the top thereof, and the recess is located at a central region of the light exit surface and recessed inwardly toward the light incident surface. The first and the second light-diffusion capping layers are received in the recess, and the second light-diffusion capping layer is located over the first light-diffusion capping layer. A refractive index of the first light-diffusion capping layer is smaller that that of the main lens but larger than that of the second light-diffusion capping layer. A backlight module source incorporating the lens and the LED light source is also provided.

Abstract: A lens for an LED backlight module includes a main lens body and a diffusion structure consisting of a plurality of micro lenses. The main lens body includes a light incident face for receiving light from an LED light source and a light exit face opposite to the light incident face thereof. Light leaves the lens from the light exit face. The micro lenses of the diffusion structure are formed on the light exit face of the main lens body. Each micro lens is annular and has a generally triangular cross section. Each micro lens includes a first light scattering surface and a second light scattering surface intersecting with the first light scattering surface. The micro lenses are arranged in a series of concentric circles with regard to a center of the lens. A backlight module source incorporating the lens and the LED light source is also provided.