Abstract: An injection molding method includes: providing a mold core which defines a mold cavity, depositing a lubrication layer on an inner surface of the mold cavity, injecting plastic material into the mold cavity, and molding the plastic material into the plastic element.

Abstract: A roller includes a cylindrical main body, a resin coating formed on a peripheral side surface of the main body, and a plurality of micro recesses defined in the resin coating. The resin coating is a polymer resin coating having the molecular chain with fluorine element. A method for making the roller and a system for making the roller are also provided.

Abstract: A fiber coupling connector includes a receptacle and a plug for insertion into the receptacle. The plug includes a first lens portion and a first sleeve receiving and surrounding the first lens portion. The receptacle includes a second lens portion and a second sleeve receiving and surrounding the second lens portion. The second sleeve is engagingly received in the first sleeve such that the first lens portion is optically coupled with the second lens portion.

Abstract: An optoelectronic transmission device includes a base, an optical signal source positioned on the base, a light detector positioned on the base, a carrier covering the optical signal source and the light detector, a first lensed optical fiber and a second lensed optical fiber. The carrier has a first through hole, a second through hole and a reflective surface. The first lensed optical fiber is received in the first through hole. The first lensed optical fiber has a first lens opposing the reflective surface for directing first light reflected by the reflective surface into the first lensed optical fiber. The second lensed optical fiber is received in the second through hole. The second lensed optical fiber has a second lens opposing the reflective surface for directing a second light transmitted by the second lensed optical fiber to the reflective surface.

Abstract: An optical fiber connector includes a connector body and a lens block. The connector body defines a number of blind holes and a receiving room. The blind holes opens towards a first side of the connector body. The receiving room opens towards an opposing second side of the connector body The lens block includes a body portion and a number of protruding portions extending from a first side of the body portion. The lens block is received in the receiving room. The protruding portions are positioned between the body portion and the blind holes. The protruding portions are aligned with the respective blind holes. The body portion has a flat second side face free of protruding portions thereon, at an opposite side thereof to the protruding portions.

Abstract: An optical fiber coupling connector includes a body and a cover attached on the body. The body includes a front surface, a lens portion arranged at the front surface, a rear surface, a top surface, an optical fiber groove defined in the top surface, and an optical fiber accommodated in the optical fiber groove. The optical fiber groove extends from lens portion to the rear surface. The cover includes an elongate retaining groove fittingly engaged with the optical fiber groove. The retaining groove is configured for fixing the optical fiber in the optical fiber groove.

Abstract: An optical fiber connector includes optical fibers, a connector body, and positioning members. The optical fibers are received in the respective through holes, and pass through the respective first recesses, the respective separating portions, and the respective second recesses, and aligned with the optical lenses. The three engagement posts of the positioning member are arranged above a through hole and surround a receiving room. The three engagement posts and a separating portion cooperatively retain an optical fiber in the connector body.

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 self-illuminating display includes a substrate, and a number of light emitting units. The light emitting units are formed on the substrate in an array fashion. Each of the light emitting units includes a first electrode, a second electrode formed on the substrate and a number of light emitting nanowires. The first electrode includes a number of first arms, and the second electrode includes a number of second arms. Each of the first arms opposes a corresponding second arm. Each of light emitting nanowires interconnects the first arm and the corresponding second arm. Each of the light emitting nanowires has a p-n junction.

Abstract: A method for manufacturing an optical film includes providing a molding machine. The molding machine includes a hopper, a first cylindrical roller, a second cylindrical roller, and a UV light source. The first and second cylindrical rollers are located at two opposite sides of a narrow outlet of the hopper and positioned at substantially a same height just below the narrow outlet. Thereafter, a UV-curable material is provided into the hopper, and flows out from the narrow outlet of the hopper. The UV light source is turned on toward the UV-curable material. Furthermore, the first and second cylindrical rollers are rotated to directly press the UV-curable material when the UV-curable material is cured.

Abstract: An apparatus for manufacturing light guide plate includes a coater containing UV curable glue, a first pressing roller and a second pressing roller. The first pressing roller and the second pressing roller are located nearby each other and space a predetermined distance from each other. The coater distributes UV curable glue on the surface of the first pressing roller or the second pressing roller. The first pressing roller and the second pressing roller cooperatively press the distributed UV curable glue. At least one of the first pressing roller and the second pressing roller includes a transparent shell and a UV lamp in the transparent shell. The UV lamp emits UV light to the other pressing roller. The UV lamp solidifies the UV curable glue pressed between the first pressing roller and the second pressing roller.

Abstract: An optical fiber coupling connector includes a body and a cover attached on the body. The body includes a front surface, a lens portion arranged at the front surface, a rear surface, a top surface, an optical fiber groove defined in the top surface, and an optical fiber accommodated in the optical fiber groove. The optical fiber groove extends from lens portion to the rear surface. The cover includes an elongate retaining groove fittingly engaged with the optical fiber groove. The retaining groove is configured for fixing the optical fiber in the optical fiber groove.

Abstract: A molding machine for manufacturing an optical film includes a hopper, a first cylindrical roller, a second cylindrical roller, and an ultraviolet light source. The hopper defines a narrow outlet. The first cylindrical roller is rotatable around its central axis parallel to the narrow outlet. The second cylindrical roller is a transparent hollow structure rotatable around its second central axis. The first central axis is parallel to the second central axis at the same level. The first and second cylindrical rollers are located at two opposite sides of the narrow outlet and below the narrow outlet, and define a gap therebetween to feed the raw material. The ultraviolet light source is located in the second cylindrical roller. An emission direction of the ultraviolet light source is orientated toward a space between the narrow outlet and the second cylindrical roller.

Abstract: An insert assembly for forming an optical fiber connector is provided. The optical fiber connector includes a light-pervious side wall having a lens portion for optically coupling with an optical fiber, and the lens portion has a flat side surface facing the optical fiber. The insert assembly includes an insert and a spacer. The insert has a side surface and a flat molding surface extending from and coplanar with the side surface, the molding surface configured for molding the flat side surface of the side wall of the optical fiber connector. The spacer has a thicknesswise side surface coplanar with a boundary between the side surface and the molding surface. The thicknesswise side surface of the spacer and the molding surface of the insert are cooperatively configured for molding the side wall of the optical fiber connector. A method for fabricating a related optical fiber connector mold is also provided.

Abstract: An optical fiber connector includes a number of optical fibers, a body, a number of supports, and a cover. The body includes a number of lenses at a first end thereof, a number of through holes at an opposite second end, and a recess located between the lenses and the through holes. The through holes are in communication with the recess. The optical fibers extend through the respective through holes and optically coupled with the respective lenses. The supports are formed in the recess. Each support defines an arc-shaped receiving groove. The cover is engagingly received in the recess and defines a number of V-shaped positioning grooves. Each positioning groove has a first slanted surface and a second slanted surface. The positioning grooves and the corresponding receiving grooves cooperatively securely retain distal portions of the optical fibers in the recess of the body.

Abstract: A method for making an optical fiber connector includes a mold. The mold includes a first mold portion having inserts each for molding a blind hole preform, and a second mold portion having a flat molding surface for forming a flat optical surface, and a number of curved molding surfaces for forming lens caps. A non-contact detection instrument is provided to project a light beam to the bottom of the blind hole preforms with the light beam passing through the flat optical surface. Then a coarseness factor image is obtained and analyzed to determine whether a coarseness factor of the bottom of the corresponding blind hole preform is acceptable and the corresponding insert is modified if it is not acceptable. Finally, the curved molding surfaces are aligned with the inserts to form the lens caps on the flat optical surface.

Abstract: A light emitting diode includes a substrate, a number of light emitting units formed on the substrate, and an insulating layer. Each light emitting unit includes a first electrode layer, a number of light emitting nanowires and a second electrode layer. Each light emitting nanowire includes a zinc-oxide-nanowire buffering segment extending from the first electrode layer, an N-type gallium nitride nanowire segment and a P-type gallium nitride nanowire segment. The N-type gallium nitride nanowire segment is interconnected between the zinc-oxide-nanowire buffering segment and the P-type gallium nitride nanowire segment. The P-type gallium nitride nanowire segment has a distal portion embedded in the second electrode layer. The insulating layer is formed on the substrate and the first electrode layer. The light emitting nanowires is embedded in the insulating layer and insulated from each other.

Abstract: A cleaning device is used for cleaning scrap blocking a spiral slot of a grinding plate. The cleaning device includes a base, a sliding device, and at least one blade. The base includes two sliding poles. The sliding device slidably sleeves on the two sliding poles. The at least one blade is fixed on the sliding device, and resists on a bottom surface of the spiral slot. When the grinding plate rotates, the at least one blade can slide in the spiral slot.