Abstract: A light guide plate includes a light incident surface, a light output surface, a bottom surface opposite to the light output surface, and a plurality of dots formed on the bottom surface. Each dot includes a first curved surface, a second curved surface and two flat surfaces separately interconnecting the first curved surface and the second curved surface. The first curved surface is configured for perpendicularly reflecting light towards the light output surface. The second curved surface is configured for scattering and reflecting light back into the light guide plate. The two flat surfaces are configured for diverging light to lateral sides of an original path.

Abstract: A lens includes a light incident face, a light exit face opposite to the light incident face and a plurality of micro dot patterns formed on the light exit face. The light incident face is a concave face and the light exit face is a convex face. The plurality of micro dot patterns are positioned at a central portion of the light exit face. A light source module incorporating the lens is also provided. The light source module includes a light emitting diode emitting light into the lens through the light incident face. The micro dot patterns direct the light from the light emitting diode and through the central portion of the light exit face toward a peripherial side of the lens.

Abstract: An electrode is made of conductive material, and includes a first surface, a second surface, and two opposite side surfaces. The second surface is opposite to the first surface. The two side surfaces are connected to the first surface and the second surface. A number of heat sinks are positioned on the second surface and the two first side surfaces, and are configured for exhausting heat generated by the electrode.

Abstract: A light guide plate includes a light emitting surface, a bottom surface opposite to the light emitting surface, a light incident surface, and a side surface opposite to the light incident surface. The bottom surface is imaginarily divided into a plurality of rectangular portions along a direction from the light incident surface to the side surface. The shapes of the rectangular portions are the same as each other. Each of the rectangular portions distributes a plurality of microstructures. The rectangular portions are assigned serial numbers along the direction from the light incident surface to the side surface. The microstructure density in each of the rectangular portions between the first rectangular portion and the last rectangular portion satisfies the formula: ai=(ai?1+ai+ai+1)/3, where i represents the serial number of the rectangular portion, N represents the total number of the rectangular portions, 1<i<N, and i and N are natural numbers.

Abstract: An optical lens for adjusting viewing angle of and diffusing light emitted from a light emitting diode includes a light incident surface and a light emitting surface. The light incident surface is cone-shaped and concave towards the light emitting surface. The light emitting surface is cone-shaped and concave towards the light incident surface. A plurality of annular protrusions is formed on the light incident surface. The annular protrusions are coaxial and a center of each of the annular protrusions is located at an optical axis passing through a vertex of the light emitting surface and a vertex of the light incident surface. A lighting device having the optical lens and the light emitting diode is also provided.

Abstract: A light reflecting device comprises: two juxtaposed elongate sidewalls having inwardly curved inner surfaces facing each other; two opposite side panels, the sidewalls interposed and connected between the side panels, the side panel has flat inner surfaces facing each other and being perpendicular to a lengthwise direction of the sidewalls; and an elongate bottom wall interconnected between the sidewalls and the side panels, the bottom wall has an elongated outwardly curved inner surface interconnected between the inwardly curved inner surfaces.

Abstract: A light guide element includes a hollow housing defining a cavity and a reflective film. The housing includes a front wall with an opening, a closed rear wall opposite to the front wall, and four sidewalls interconnected between the front wall and the rear wall. One of the sidewalls defines a number of light output holes. The opening and the light output holes communicate with the cavity. The reflective film is formed on the entirely inner side surfaces of the housing in the cavity. Light from the opening is repeatedly reflected by the reflective film in the cavity and finally exits the housing through the light input holes.

Abstract: A direct-type LED backlight module includes a supporting base having a supporting face, an LED mounted on the supporting face of the supporting base, and a dome-like light guiding cover positioned on the supporting face of the supporting base and covering the LED. The light guiding cover defines a plurality of through holes for permitting light emitted from the LED to pass through light guiding cover. The through holes are spaced from each other and arranged in a number of imaginary concentric circles relative to a center of the light guiding cover. An inner face of the light guiding cover facing the LED is coated with a reflective film. A semispherical light reflecting portion protrudes downwardly from an inner face of a top portion of the light guiding cover towards the LED.

Abstract: A ring-shaped light guiding member includes a ring-shaped light guiding main body having a circumferential surface, and a light introducing portion formed on the circumferential surface. The light introducing portion includes a flat light incident surface perpendicularly connected to the circumferential surface and a curved side surface connected between the light incident surface and the circumferential surface. A backlight module using the ring-shaped light guiding member is also provided.

Abstract: A light guide plate includes a main body and a number of semi-cylindrical shaped protrusions. The main body includes a light incident surface and a top surface perpendicular to the light incident surface. The top surface includes a light emitting area and a fringe area surrounding the light emitting area. The protrusions are continuously distributed on the light incident surface. Each protrusion includes two semicircular end surfaces opposite to each other, a plane fixed surface fixed on the light incident surface, and an arc-shaped peripheral surface. The diameter of the end surfaces is less than 1 millimeter. The length of each protrusion along its central axis is substantially equal to the thickness of the light incident surface along a direction perpendicular to the top surface.

Abstract: A light guide plate includes a light incident surface, a bottom plate, a light emitting surface opposite to the bottom plate, and a side surface opposite to the light incident surface. The light incident surface is perpendicular to the light emitting surface. The bottom surface is imaginarily divided into rectangular sub-portions which are equal in area and shape. A portion of the sub-portions close to the side surface constitutes a main portion. Each sub-portion uniformly distributes micro protrusions. Along a direction from the light incident surface to the side surface, the micro protrusion densities of the sub-portions of the main portion gradually ascend, and the difference values of the micro protrusion densities of any two adjacent sub-portions of the main portion gradually ascend.

Abstract: A light guide plate includes a light incident surface, a light exit surface; and a bottom surface opposite the light exit surface. The light incident surface includes many first micro structures and many second micro structures. Each second micro structure cover some of the first micro structures.

Abstract: A light source module includes a housing receiving a light source. The housing includes a transparent light emitting plate with a micro structure positioned on an outer surface thereof. The micro structure includes a number of first and second light guide projectors. The first light guide projectors are positioned at a middle part of the outer surface, the second light guide projectors are positioned at two end parts of the outer surface. The first and second light guide projectors extend along the outer surface and are perpendicular to each other, cross-sectional surfaces of the first light guide projectors perpendicular to the extending direction of the first light guide projectors are semi-circular-shaped, and cross-sectional surfaces of the second light guide projectors perpendicular to the extending direction of the second light guide projectors are triangular-shaped. An illuminating device including the light source module is also provided.

Abstract: A light guide plate includes an incident surface, an emergent surface substantially perpendicular to the incident surface, a bottom surface opposite to the emergent surface, and a number of micro-dots positioned on the bottom surface. The micro-dots have similar shape and size. A density of the micro-dots gradually increases from a near-end to a far-end of the incident surface.

Abstract: A laser machining method for metallic workpiece, including providing a metallic workpiece, heating the metallic workpiece with a heater controller, and machining the metallic workpiece with a laser beam.

Abstract: A molding core includes a main body and a protective layer. The main body includes a molding surface and a rear surface opposite to the molding surface. The protective layer is formed on the rear surface of the main body. The present disclosure also discloses a method of manufacturing the molding core.

Abstract: A blow drying mechanism for drying plate-like members with pressurized air is disclosed. The blow drying mechanism includes an air inlet wall defining at least one inlet and an air outlet wall defining at least one outlet communicating with the at least one inlet. The at least one outlet is an elongated slot.

Abstract: A light source module includes a housing receiving a light source. The housing includes a transparent light emitting plate with a micro structure positioned on an outer surface thereof. The micro structure includes a number of first and second light guide projectors. The first light guide projectors are positioned at a middle part of the outer surface, the second light guide projectors are positioned at two end parts of the outer surface. The first and second light guide projectors extend along the outer surface and are perpendicular to each other, cross-sectional surfaces of the first light guide projectors perpendicular to the extending direction of the first light guide projectors are semi-circular-shaped, and cross-sectional surfaces of the second light guide projectors perpendicular to the extending direction of the second light guide projectors are triangular-shaped. An illuminating device including the light source module is also provided.

Abstract: A light guide plate includes an incident surface, an emergent surface substantially perpendicular to the incident surface, a bottom surface opposite to the emergent surface, and a number of micro-dots positioned on the bottom surface. The micro-dots have similar shape and size. A density of the micro-dots gradually increases from a near-end to a far-end of the incident surface.