Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (23). The transparent layer includes a light input interface (211), a light output surface (213) opposite to the light input interface, and a plurality of micro protrusions (215) defined in the light output surface. Each of the micro protrusions includes at least three side surfaces connecting with each other. A transverse width of each side surface decreases along a direction from a base end of the micro protrusion to a distal end of the micro protrusion. The light diffusion layer is integrally formed in immediate contact with the light input interface of the transparent layer. The light diffusion layer includes a transparent matrix resins (231) and a plurality of diffusion particles (233) dispersed into the transparent matrix resins. A method for making the optical plate is also provided.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (22). The transparent layer includes a light input interface (211), a light output surface (212) opposite to the light input interface, and a plurality of V-shaped protrusions (213) protruding out from the light output surface. The light diffusion layer is integrally formed with the transparent layer adjacent to the light input interface. The light diffusion layer includes a transparent matrix resins (221) and a plurality of diffusion particles (223) dispersed in the transparent matrix resins. A method for making the optical plate is also provided.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (22). The transparent layer includes a light input interface (211), a light output surface (212) opposite to the light input interface, and plural depressions (213) defined at the light output surface. Each of the depressions is composed of a plurality of inverted conical frustums. The light diffusion layer is integrally formed with the transparent layer adjacent to the light input interface. The light diffusion layer includes a transparent matrix resins (221) and plural diffusion particles (222) dispersed in the transparent matrix resins. A method for making the optical plate is also provided.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (22). The transparent layer includes a light input interface (211), a light output surface (212) opposite to the light input interface, and a plurality of depressions (213) defined at the light output surface. The depressions including at least three sidewalls connecting with each other, wherein a transverse width of each sidewall of each depression progressively increasing along a direction away from the light input interface. The light diffusion layer is integrally formed in immediate contact with the light input interface of the transparent layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed into the transparent matrix resins. A method for making an optical plate is also provided.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (23). The transparent layer includes a light input interface (211), a light output surface (213) opposite to the light input interface, and a plurality of spherical depressions (215) defined at the light output surface. The light diffusion layer is integrally formed with the transparent layer adjacent to the light input interface. The light diffusion layer includes a transparent matrix resins (231) and a plurality of diffusion particles (233) dispersed in the transparent matrix resins. A method for making the optical plate is also provided.

Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (23). The transparent layer includes a light input interface (211), a light output surface (213) opposite to the light input interface, and plural elongated protrusions (215) defined at the light output surface (213). Each two adjacent elongated protrusions (215) cooperatively define a trough therebetween. At least one of a top portion of each of the elongated protrusions and a bottom portion of each of the troughs is curved. The light diffusion layer is integrally formed with the transparent layer adjacent to the light input interface. The light diffusion layer includes a transparent matrix resins (231) and plural diffusion particles (233) dispersed in the transparent matrix resins. A method for making the optical plate is also provided.

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 exemplary lamp housing includes a base (21), two frame members (23), and two frame holding members (24). The base includes an upper surface for disposing one lamp (20) thereon. The frame members are respectively attached to two opposite ends of the base so as to hold the lamp. Each of the frame members includes an outer side surface (232) and a lower outer surface (233). The frame holding members are each fixed on a corresponding one of the frame members so as to fix the frame members with the lamp. Each frame member includes a plurality of first protruding rims (2323) and second protruding rims (2324) extending from the outer side surface and down the lower outer surface. Each of the first protruding rims is parallel to one of the second protruding rims so as to define a receiving groove (2321) for mounting lamp wires connecting to the lamp.

Abstract: An exemplary direct type backlight module (30) includes a housing (31), a reflective sheet (34), a central supporting member (36), and a plurality of light sources (33). The housing includes a base plate (311) and a periphery side plate (313) extending from the base plate. The supporting member is disposed on the base plate and supports the reflective sheet. The reflective sheet defining a plurality of through holes. The light sources are arranged on or above the base plate. Each of the light sources includes a light emitting portion (331) extending through a corresponding one of the through holes of the reflective sheet.

Abstract: An exemplary backlight module (100) includes a housing (10), a reflective sheet (30), a number of point light sources (20). The housing includes a bottom plate (12) and at least one platform support (14) extending out from the bottom plate towards an interior of the housing. The reflective sheet is supported by the platform support, and defines a number of through holes (301). The point light sources are arranged in the housing corresponding to the through holes of the reflective sheet. Each point light source includes a base portion (22) and a light emitting portion (24). The base portion is secured at the bottom plate of the housing, and the light emitting portion protrudes through a corresponding one of the through holes.

Abstract: An exemplary LED light source (20) includes plural LED modules (201). Each LED module includes three circuit boards (202), (203), and (204) arranged in parallel, and plural light-mixing units (206). Each light-mixing unit has two first color LEDs (2061), a second color LED (2062), and a third color LED (2063). The first, second, and third color LEDs of each light-mixing unit are distributed on the three circuit boards in a predetermined arrangement.

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: An exemplary direct type backlight module (20) includes a one-piece housing (21), at least one circuit board (23), and a plurality of light emitting diodes (22). The housing includes a plurality of fins (24), a base plate (211) and at least three sidewalls (212) extending out from a first main side of the base plate. The base plate and the sidewalls cooperatively defines a cavity (213). The fins are extended from a second main side of the housing. The fins are configured for dissipating heat from the housing. The fins and the housing are integrally formed. The at least one circuit board is disposed in the cavity of the housing. The light emitting diodes are disposed on the at least one circuit board. The backlight module is easy to be assembled and has low cost.

Abstract: An exemplary light emitting diode includes a light output unit, an optical lens, and a reflective resin member. The optical lens is mounted on the light output unit. The optical lens includes a light input surface facing the light output unit, a top interface distal from the light input surface, and a light output surface generally between the light input surface and the top interface. The reflective resin member is formed on the top interface of the optical lens. Methods for making the light emitting diode are also provided.

Abstract: An exemplary optical lens (300) includes a top surface (301), a base portion (304) opposite to the top surface, and a peripheral side surface defining a first refractive portion (302). The top surface is a generally funnel-shaped top surface. The first refractive portion is corrugated with a plurality of protruding ridge structures, and each of the ridge structures includes a refractive surface (3021). An exemplary light emitting device incorporating the optical lens is also provided.

Abstract: An exemplary light emitting diode (30) includes a light output unit (31), an optical lens (33) and a reflective film (35). The optical lens includes a light input surface (331) facing the light output unit, a top interface (333) opposite to the light input surface, and a light output surface (335) between the light input surface and the top interface. The reflective film is integrally formed on and in immediate contact with the top interface of the optical lens. The reflective film is made of a transparent resin matrix material dispersed with a plurality of reflective particles. A method for making the light emitting diode is also provided.

Abstract: An exemplary backlight module (30) includes a frame (31), a plurality of light emitting diodes (32) and at least one optical plate (34). The light emitting diodes are regularly disposed on the base. The optical plate is positioned on the frame. Each light emitting diode includes a light output unit (321), an optical lens (323) having a light input surface (3231), a top surface (3233), and a light output surface (3235); and a reflective sheet (325) affixed on the top surface of the optical lens. The backlight module can have a thin configuration while still providing good, uniform optical performance.

Abstract: An exemplary light emitting diode (100) includes a light output unit (101), an optical lens (102) and a diffusing layer (103). The optical lens is mounted on the light output unit. The optical lens has a light input surface (1021) facing the light output unit, a recessed top interface (1022) distal from the light input surface, and a light output surface (1023) generally between the light input surface and the top interface. The diffusing layer is formed on the top interface of the optical lens. The diffusing layer is made of resin matrix material and a plurality of light diffusion particles. Methods for manufacturing the light emitting diode are also provided.

Abstract: A backlight module (20) includes a plurality of light sources (24) and an optical sheet (21). The optical sheet includes a light incident surface (211), a light emitting surface (212), and a plurality of inverted rectangular pyramid depressions (213). The light sources are positioned adjacent to the light incident surface. The light incident surface and the light emitting surface are at opposite sides of the optical sheet. The inverted rectangular pyramid depressions are defined on the light emitting surface and aligned regularly in a matrix manner.

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 elongated recessed portions (213) formed at the light input surface. The light diffusion layer is coated in the elongated recessed portions. The light diffusion layer and the light input surface cooperatively define a flat surface. 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.