Abstract: A lens includes a light incident surface and a light output surface. In a coordinate system, the light incident surface satisfies a formula (1): Z r 1 = c 1 ? r 1 2 1 + 1 - r 1 2 ? c 1 2 + u 1 2 ? ( 1 - u 1 2 ) 1 - r 1 2 ? c 1 2 ? ? m = 0 M ? a m ? Q m ? ( u 1 2 ) . c1 is a curvature of the light incident surface. r1 is a distance from the center of the lens to a joint point between the light input surface and a radius which is substantially perpendicular to the central axis of the lens. u1 is a normalized radius of the light incident surface. am represents the aspheric coefficient. Qm is a polynomial of order m and represents that the sum of am is equal to the sum of the root mean square of the slope of the light incident surface.

Abstract: A lens for an LED includes a top face, a bottom face, and a circumferential periphery interconnecting the top and bottom faces. The top face defines a recess therein. A concave wall defines a bottom of the recess. In cross section of the lens, the concave wall consists of two symmetrical curves extending outward and upwardly from a bottom tip of the recess to connect with the top face. Each curve is a part of a hyperbola. The cavity is for receiving an LED therein. The lens further forms a cone-shaped top wall enclosing a top of the cavity. Light emitted from the LED travels through the cone-shaped top wall to strike the concave wall and be reflected thereby to radiate sideward and downwardly. The sideward and downwardly reflected light then is reflected by a reflective coating on a substrate to illuminate upwardly.

Abstract: An LCD module includes a screen, a light diffusion plate, a first lens, a second lens and an LED. The second lens covers the first lens which in turn covers the LED. The first lens has a first fly-eye lens array formed on a light-incident face thereof and a second fly-eye lens array formed on a light-emergent face thereof. Each of the first fly-eye lens array and the second fly-eye lens array includes multiple convex micro-lenses. The second lens is a light diffusion lens. Light emitted from the LED is diffused by the first lens and the second lens to uniformly illuminate the screen through the light diffusion plate.

Abstract: A lens includes a light incident surface and a light output surface. In a coordinate system, the light incident surface satisfies a formula (1): Z r 1 = c 1 ? r 1 2 1 + 1 - r 1 2 ? c 1 2 + u 1 2 ? ( 1 - u 1 2 ) 1 - r 1 2 ? c 1 2 ? ? m = 0 M ? ? a m ? Q m ? ( u 1 2 ) . c1 is a curvature of the light incident surface. r1 is a distance from the center of the lens to a joint point between the light input surface and a radius which is substantially perpendicular to the central axis of the lens. u1 is a normalized radius of the light incident surface. am represents the aspheric coefficient. Qm is a polynomial of order m and represents that the sum of am is equal to the sum of the root mean square of the slope of the light incident surface.

Abstract: An exemplary method for making a lens array requires an imprinting mold and a substrate. A blob of molding material is applied on each molding section of the substrate. First alignment marks, and second alignment mark of the imprinting mold aligned with third and fourth alignment marks on each one of the imprinting regions, respectively. The imprinting mold is pressed on the molding material on the imprinting region. The pressed portions of the imprinting region are solidified to obtain lenses in the imprinting region. The imprinting mold is pressed on another one of the imprinting region, and the imprinting mold is removed. This process is repeated for each other imprinting region. Thus, a large-scale lens array is obtained.

Abstract: A compound optical film includes an unitary two-layer structure with of a light guide layer and a light reflective layer attached on the light guide layer. A number of light scattering particles are dispersed in the light guide layer adjacent to an interface between the light guide layer and the light reflective layer. The compound optical film can reduce the thickness of backlight module while the compound optical film is used in backlight module. The present art also relates to a manufacturing method for the compound optical film.

Abstract: A compound optical film includes an unitary two-layer structure with of a light guide layer and a light reflective layer attached on the light guide layer. A number of light scattering particles are dispersed in the light guide layer adjacent to an interface between the light guide layer and the light reflective layer. The compound optical film can reduce the thickness of backlight module while the compound optical film is used in backlight module.

Abstract: A lens for an LED comprises a top face, a bottom face, and a circumferential periphery interconnecting the top and bottom faces. The top face defines a recess therein. A concave wall defines a bottom of the recess. In cross section of the lens, the concave wall consists of two symmetrical curves extending outward and upwardly from a bottom tip of the recess to connect with the top face. Each curve is a part of a hyperbola. The cavity is for receiving an LED therein. The lens further forms a cone-shaped top wall enclosing a top of the cavity. Light emitted from the LED travels through the cone-shaped top wall to strike the concave wall and be reflected thereby to radiate sideward and downwardly. The sideward and downwardly reflected light then is reflected by a reflective coating on a substrate to illuminate upwardly.

Abstract: An optical fiber connector includes a main body, lens portions, and optical fibers. The main body includes a first side surface and a second side surface opposite to the first side surface. The main body defines a cavity between the first and second side surfaces, and a number of accommodating holes extending through the first side surface and communicating with the cavity. The cavity includes an inner surface. The lens portions are positioned on the second side surface, and each lens portion is coaxial with a corresponding accommodating hole. A focal plane of each lens portion overlaps the inner surface. The optical fibers are fixed in the accommodating holes. An end of each optical fiber is fixed at the focal plane of a corresponding lens portion. The main body includes a bottom surface and defines a through hole in the cavity. The through hole passes through the bottom surface.

Abstract: An optical element package includes an optical wave guide array, at least one optical assembly and at least one optical transmission member. The optical wave guide array has a reflection groove. The reflection groove includes a reflection surface. The at least one optical assembly is positioned on the optical wave guide array adjacent to the reflection surface. The at least one optical transmission member is positioned on the optical wave guide array, and is optically coupled with the reflection surface. The optical signals emitted by the at least one optical assembly are reflected by the reflection surface and then reaching the at least one optical transmission member for transmission.

Abstract: An optical fiber connector includes a main body, lens portions, and optical fibers. The main body includes a first side surface and a second side surface opposite to the first side surface. The main body defines a cavity between the first and second side surfaces, and a number of accommodating holes extending through the first side surface and communicating with the cavity. The cavity includes an inner surface. The lens portions are positioned on the second side surface, and each lens portion is coaxial with a corresponding accommodating hole. A focal plane of each lens portion overlaps the inner surface. The optical fibers are fixed in the accommodating holes. An end of each optical fiber is fixed at the focal plane of a corresponding lens portion. The main body includes a bottom surface and defines a through hole in the cavity. The through hole passes through the bottom surface.

Abstract: An optical fiber connector includes a main body, a number of lens portions, a number of restricting members, and a number of optical fibers. The main body includes a first side surface and a second side surface opposite to the first side surface. The main body defines a cavity between the first and second side surfaces, and a number of accommodating holes extending through the first side surface and communicating with the cavity. The lens portions are positioned on the second side surface, and each lens portion is coaxial with a corresponding accommodating hole. The restricting members are arranged in the cavity. The optical fibers are fixed in the accommodating holes. Each optical fiber is restricted by a corresponding restricting member and an end of each optical fiber is fixed at the focal plane of a corresponding lens portion.

Abstract: An optical plug includes a connector body. The connector body defines a receiving hole with a opening, a hollow pusher extends from the connector body and surrounding the receiving hole; and a number of lenses are arranged in the receiving hole. The connector body includes a first side surface and a second side surface, the first side surface defines a reflecting groove and the reflecting groove includes a reflecting surface, an included angle between the reflecting groove surface and the first side surface is 135 degrees. A number of lenses arrange on the second side surface to receive signal reflecting by the reflecting surface; and two elastic shielding plates have fixed ends fixed to opposite sides of the pusher, and opposite free ends overlappable to cover the opening.

Abstract: A mold for molding optical fiber connector includes a core pin, a core mold and a cavity mold. The core pin has insertion portion and a blind hole forming portion. The core mold is used to clamp the insertion portion of the core pin. The cavity mold includes a molding cavity and a through hole defined in the sidewall of the cavity mold, the molding cavity includes a lens forming portion used to mold the lens. A positioning block defining an aligning hole is positioned in the through hole, the aligning hole is used to clamp the blind hole forming portion of the core pin to make the blind hole forming portion align with the lens forming portion during the injection molding process. The present art also relate to a method for adjusting the mold.

Abstract: An LCD module includes a screen, a light diffusion plate, a first lens, a second lens and an LED. The second lens covers the first lens which in turn covers the LED. The first lens has a first fly-eye lens array formed on a light-incident face thereof and a second fly-eye lens array formed on a light-emergent face thereof. Each of the first fly-eye lens array and the second fly-eye lens array includes multiple convex micro-lenses. The second lens is a light diffusion lens. Light emitted from the LED is diffused by the first lens and the second lens to uniformly illuminate the screen through the light diffusion plate.

Abstract: A method for fabricating a light guide plate includes the following steps. Injection molding a light guide plate to obtain a light guide plate with a stub. Cutting away the stub to obtain a light guide plate with a cut edge. Providing a thermal resetting apparatus having an nano release material layer. A thermal melting temperature of the nano release material layer is higher than that of the light guide plate, heating the thermal resetting apparatus to make a temperature of the nano release material layer higher than the thermal melting temperature of the nano release material layer. And resetting the cut edge of the light guide plate by contacting the nano release material layer of the thermal resetting apparatus with the cut edge of the light guide plate to obtain a light guide plate with a smooth edge.

Abstract: An optical fiber connector includes optical fibers, a connector body, and a cover. The connector body includes optical lenses arranged at the first side surface. The connector body defines receiving grooves. Each of the receiving grooves has a V-shaped section and two slanted surfaces. The optical fibers are received in the grooves and as a result are correctly aligned with the respective optical lenses. The cover and the slanted surfaces of the receiving grooves cooperatively securely retain the optical fibers in the connector.

Abstract: A light guide device includes a light guide plate, a diffusion layer, and a brightening layer. The light guide plate includes a first surface, a second surface opposite to the first surface, and diffusion pots positioned on the first surface. The diffusion layer is adhered to the second surface of the light guide plate, and includes transparent adhesive and diffusion particles scattered in the transparent adhesive. The brightening layer is adhered to the diffusion layer, and includes a micro structure formed on a surface of the brightening layer facing away from the diffusion layer. The micro structure includes a number of cutouts. A manufacturing method for the light guide device is also provided.

Abstract: A backlight module includes a light guide plate and a plurality of light sources. The light guide plate includes a wedge-shaped light incident part and a flat panel. The wedge-shaped light incident part and the flat panel have a common bottom surface. The height of the wedge-shaped light incident part is greater than that of the flat panel. The wedge-shaped light incident part includes a light incident surface perpendicular to the bottom surface and a sloped surface sloping relative to the light incident surface and connects to the flat panel. The sloped surface defines a plurality of V-shaped grooves for preventing light leak. The flat panel includes a light emitting surface opposite to the bottom surface. The plurality of light sources is positioned adjacent to the light incident surface.