Abstract: An optical fiber holding device for holding optical fibers includes an assembling member and a base. The assembling member includes a top surface, a bottom surface opposite to the top surface, a front surface, and a rear surface opposite to the front surface. The front surface and the rear surface are interconnected between the top surface and the bottom surface. The front surface defines a number of receiving holes for receiving front portions of the optical fibers. The base includes an assembly portion and a support portion connecting the assembly portion. The assembly member is detachably mounted on the assembly portion. The support portion supports main portions of the optical fibers.

Abstract: A female optical connector includes a connector body, a hollow pusher, an optical fiber, lenses, and two elastic shielding plates. The connector body includes a coupling surface. The coupling surface defines a receiving hole with an opening. The connector body further includes an end surface, a first surface, and a second surface in the receiving hole. The end surface faces the opening and is interconnected between the first surface and the second surface. The hollow pusher extends from the end surface and is received in the receiving hole. The hollow pusher is spaced apart from the first and second surfaces. The lens is received in the receiving hole and optically coupled to the optical fiber. The elastic shielding plates have fixed ends fixed to the first surface and the second surface at opposite sides of the receiving hole, and opposite free ends overlappable to cover the opening.

Abstract: An optical communication module includes an optical transmitter, an optical coupling lens, and an optical fiber. The optical coupling lens includes a first surface, a second surface, a reflection surface, a first lens unit, and a second lens unit. An included angle between the first surface and the second surface is 82 degrees. An included angle between the first surface and the reflection surface is 45 degrees. The first lens unit is positioned on the first surface. The second lens unit is positioned on the second surface. The optical transmitter is positioned towards the first surface and aligned with the first lens unit. An optical fiber is positioned towards the second surface and aligned with the second lens unit.

Abstract: A photoelectric coupling module includes a fiber module and a lens module. The fiber module defines a number of receiving holes and at least one positioning hole. The lens module includes a main body and at least one positioning pole. The main body includes a lens portion and a receiving portion. The lens portion includes a central portion and an edge portion surrounding the central portion, the central portion includes a plurality of lenses. The receiving portion is positioned on the edge portion. The at least one positioning pole is received in the receiving portion, and is positioned on the edge portion. One end of the fiber module is received in the receiving portion. The at least one positioning pole is received in the at least one positioning hole, and the lenses are aligned with the receiving holes.

Abstract: A lens module includes a front lens unit and a bottom lens unit. The front lens unit includes a number of first lenses having parallel optical axes. The bottom lens unit is detachably connected to the front lens unit. The bottom lens unit includes a number of second lenses having parallel optical axes.

Abstract: An LED element includes an LED and a lens located over the LED. The LED has a rectangular light outputting face. The lens has a light outputting face. The light outputting face of the lens includes a first light outputting portion and two second light outputting portions. The first light outputting portion performs a convergent function to light output along a long side of the rectangular light outputting face of the LED. The second light outputting portion performs a divergent function to the light output along a short side of the rectangular light outputting face of the LED. The light emitted from the lens has an energy intensity distribution the same along each of two perpendicular directions of the long side and short side of the rectangular light outputting face.

Abstract: An optical coupling lens includes a main body and two plugs. The main body includes a front surface, a back surface opposite to the front surface, a first optical surface, a second optical surface perpendicular to the first optical surface, a reflecting surface obliquely facing the two optical surfaces, first converging lenses formed on the first optical surface, and second converging lenses formed on the second optical surface. The plugs extend from the front surface and sandwich the first converging portions. Each plug includes a cylindrical body portion having a flat end surface, a bowl-shaped protruding portion extending from the end surface and having a top surface away from the end surface, and a buffering portion formed in the top surface. The diameter of the protruding portion decreases from the end surface to the top surface.

Abstract: A lens includes an incident surface and a light output surface. A plurality of light diverging portions is arranged on the light output surface and around a center of the light output surface. The light diverging portions each are a ring and are spaced from each other. An inner light diverging portion has a refraction angle larger than that of an outer light diverging portion. Light emitted into the lens from the incident surface is diffused by the light output surface and the light diverging portions to radiate out of the lens. A cross section of each light diverging portion has a shape of a triangle. The present disclosure also relates a backlight module using the lens.

Abstract: A communication device includes four signal sending chips, four signal receiving chips, a first optical module and a second optical module. Each of the first optical module and the second optical module includes a main body and four lenses formed on the main body. The first optical module has four signal sending channels corresponding to the four lenses thereof, and the second optical module has four signal receiving channels corresponding to the four lenses thereof. The first optical module and the second optical module are individual from each other.

Abstract: An optical communication device includes an optical fiber connector for positioning at least one optical fiber, a lens member for optically coupling the optical fiber with an photoelectric member, at least two metal engaging posts positioned on one of the optical fiber connector and the lens member, and at least two metal bushing members positioned on the other of the optical fiber connector and the lens member. The bushing members correspond to the engaging posts. Each bushing member defines an engaging hole for engaging with a corresponding engage post. The optical fiber connector is connected and aligned with each other by an engagement between the engaging posts and the bushing member.

Abstract: A photoelectric coupling module includes a holding module and a lens module. The holding module includes a base defining a receiving recess and a cover having a protruding portion. The protruding portion is received in the receiving recess, and the protruding portion and the receiving recess cooperatively define a receiving room for holding optical fibers. The lens module is coupled to the holding module, and includes a reflective surface, a plurality of first lenses, and a plurality of second lenses. Optical axes of the first lenses cross optical axes of the second lenses on the reflective surface. The optical fibers are coupled to the second lenses.

Abstract: An optical fiber connector includes a housing, two coupling lenses, a RJ45 plug, a holder, and two optical fibers. The housing defines a receiving cavity with a bottom surface and two through holes. The coupling lens is positioned on the bottom surface and covers the through holes. The RJ45 plug is received in the receiving cavity and defines a receiving recess. The holder is received in the receiving recess and defines two receiving through holes. The optical fibers are received in the receiving through holes and optically aligned with the coupling lenses.

Abstract: A photoelectric conversion device includes a circuit board, light-emitting modules, light-receiving modules, an optical coupling module, and a protecting member. The light-emitting modules and the light-receiving modules are mounted on the circuit board. The optical coupling module is mounted on the circuit board, and includes first and second optical surfaces, a reflection surface, first converging lenses formed on the first optical surface and corresponding to the light-emitting modules and the light-receiving modules, and second converging lenses formed on the second optical surface and corresponding to the first converging lenses. The protecting member is mounted on the circuit board to shield the optical coupling module, the light-emitting modules, and the light-receiving modules, and only exposes the second converging lenses.

Abstract: A dust cleaning device includes a tray, a cover assembled to the tray, and an air nozzle. The tray defines recesses for receiving lens barrels. A bottom of each of the recesses defines a through hole communicating with the lens barrel. The cover includes a main body and an inlet tube. The main body includes a top wall, a bottom wall, sidewalls, guide passages between the top and bottom walls, an inlet passage, and outlet passages. The inlet tube extends from the top wall. The guide passages criss-cross and communicate with each other. The sidewalls shield the guide passages. The inlet passage communicates with an inside of the inlet tube and one of the guide passages. The outlet passages communicate with the guide passages and are exposed at the bottom wall. The outlet passages are aligned with the respective recesses. The air nozzle is mounted in the inlet tube.

Abstract: A female optical connector includes a connector body, a hollow pusher, an optical fiber, lenses, and two elastic shielding plates. The connector body includes a coupling surface. The coupling surface defines a receiving hole with an opening. The connector body further includes an end surface, a first surface, and a second surface in the receiving hole. The end surface faces the opening and is interconnected between the first surface and the second surface. The hollow pusher extends from the end surface and is received in the receiving hole. The hollow pusher is spaced apart from the first and second surfaces. The lens is received in the receiving hole and optically coupled to the optical fiber. The elastic shielding plates have fixed ends fixed to the first surface and the second surface at opposite sides of the receiving hole, and opposite free ends overlappable to cover the opening.

Abstract: A lens element includes a main body and a light splitting member. The main body includes an end surface allowing optical fibers to optically connect to the main body, and a bottom surface facing toward optical signal emitting/receiving elements. The main body defines a groove. The groove includes a reflecting surface for reflecting optical signals between the optical signal emitting/receiving elements and the optical fibers. The light splitting member is positioned in a path of light emitted by the optical signal emitting/receiving elements, the light splitting member splits the light into two split light beams, and directs one of the split light beams to the optical fibers and directs the other of the split light beams to an optical detector.

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 connector includes a base including a main body and a number of optical elements, and a number of optical fibers. The main body includes a first surface, a third surface perpendicularly connecting the first surface, and a fourth surface facing away the third surface, and defines a number of slots, which is perpendicular to the third surface, in the in the first surface. The slots run through the third surface. Each of the slots includes a regular wide first section and a second section connecting the first section and running through the third surface. Each of the second section tapers from the third surface to the first section. The optical elements are formed on the fourth surface and aligned with the slots. The optical fibers are slid and fitted in the first sections, guided by the second sections.

Abstract: An LCD module includes a screen, a light diffusion plate, a lens and an LED. The lens covers the LED. The lens includes a main body having a bottom face and a top face opposite to the bottom face. The bottom face of the main body defines a cavity to receive the LED. The top face of the main body forms a plurality of concentric annuluses thereon. Each annulus has a first face perpendicular to the top face of the main body, and a second face inclined relative to the top face of the main body, to thereby diverge a part of light from the LED and into the lens. A central area of the top face of the main body is surrounded by an innermost annulus, and forms a rough face for diffusion another part of the light from the LED into the lens.

Abstract: An optical fiber connector includes an optical cable and a connector body connected to the optical cable. The connector body includes a shell, a PCB, photoelectric elements, and a coupler. The shell includes a receiving portion and a plug portion connected to the receiving portion. The receiving portion defines a receiving space therein, and the plug portion defines an opening communicating with the receiving space. The receiving portion includes a bottom plate and an opposite top plate. The receiving portion defines a connecting hole in the top plate and communicating with the receiving space, and an end of the optical cable is received and fixed in the connecting hole. The PCB includes a mounting end positioned in the receiving portion and an insertion end extending to the plug portion through the opening. The photoelectric elements are positioned on the mounting end and faces toward the top plate.