Abstract: A method for processing a lens barrel includes the steps of: (a) providing a processing device including a processing shaft and a cutting tool; (b) moving the lens barrel and the processing shaft relative to each other so that an image of the cutting tool projected on a plane that intersects a tubular wall of the lens barrel is orthogonal to the tubular wall; (c) moving the processing shaft relative to the lens barrel so that the cutting tool is close to the tubular wall; (d) moving the processing shaft relative to the lens barrel so that the cutting tool is in touch with the tubular wall; (e) moving the processing shaft and the lens barrel relative to each other so that the lens barrel is formed with a continuous groove on the tubular wall; and (f) moving the cutting tool away from the lens barrel.

Abstract: An apparatus includes a machine bed, a holder unit disposed movably on the machine bed, and an adhesion unit. A method for adhering a light-shielding sheet onto a transparent body includes: (A) moving the transparent body on a machine bed into a holder unit by suction; (B) moving the holder unit on the machine bed in a feeding direction; (C) cooperating with operation of the holder unit so as to apply glue to the transparent body; (D) cooperating with operation of the holder unit so as to move the transparent body on the machine bed to a position under the light-shielding sheet; and (E) pressing the light-shielding sheet against the transparent body so as to adhere the light-shielding sheet onto the transparent body, thereby forming an optical lens unit.

Abstract: A high precision molding device for insert-molding optical lens comprises a stationary sub-mould and a movable sub-mould for engaging with the stationary sub-mould thereby forming a mould cavity therebetween for molding an optical lens. The molded lens has a body and a protection ring extending outside from the body, and is separated from the stationary sub-mould together with the movable sub-mould. The movable sub-mould includes a mould base, a core fixed with the mould base and a pushing means for pushing the molded lens off the movable sub-mould. The pushing means is circumferentially positioned at the mould base. The upper and bottom surfaces of the protection ring of the molded lens form textures to be foggy.

Abstract: A method for making a lens barrel includes the steps of: (a) forming a fusible mold core having at least one flange; (b) applying an insulating layer on the fusible mold core; (c) disposing the fusible mold core in a lens-barrel-forming mold; (d) feeding a molding material into the lens-barrel-forming mold to form the lens barrel between the lens-barrel-forming mold and the fusible mold core and adhered to the fusible mold core, the lens barrel having at least one inner cam groove corresponding to the flange of the fusible mold core; (e) removing the lens barrel together with the fusible mold core from the lens-barrel-forming mold; and (f) fusing the fusible mold core for separating the fusible mold core from the lens barrel.

Abstract: Optical elements are provided. An optical element is formed by injecting resin material into a mold through a gate in a first direction. The optical element includes a main body, a flange surrounding and connecting the main body, and a curved depression formed between the main body and the flange. The main body has a central axis and a first curved surface. The flange includes an annular abutting surface and a connecting portion. The connecting portion has a connecting surface connecting the first curved surface and the abutting surface. Both of the abutting surface and the connecting surface are perpendicular to the central axis.

Abstract: Optical elements are provided. An optical element is formed by injecting resin material into a mold through a gate in a first direction. The optical element includes a main body, a flange surrounding and connecting the main body, and a curved depression formed between the main body and the flange. The main body has a central axis and a first curved surface. The flange includes an annular abutting surface and a connecting portion. The connecting portion has a connecting surface connecting the first curved surface and the abutting surface. Both of the abutting surface and the connecting surface are perpendicular to the central axis.

Abstract: A method and a mold (60, 70) for injection molding an optical article (10, 50) with increased surface accuracy are disclosed. The shaping side (65, 75) of a movable mold insert (61, 71) of the injection mold is shaped corresponding to those of both optical effective area (11, 12; 51) and reference surface (13; 53) of the optical article to be molded. The gate (62, 73) of the injection mold is positioned at a location adjacent to a portion of the mold cavity (63, 74) corresponding to a large convex portion of the optical article to be molded.

Abstract: An apparatus includes a machine bed, a holder unit disposed movably on the machine bed, and a fusion unit. A method for fusing a light-shielding sheet onto a transparent body includes: (A) moving the transparent body on the machine bed into the holder unit by suction; (B) moving the holder unit on the machine bed in a feeding direction; (C) cooperating with operation of the holder unit so as to move the transparent body on the machine bed to a position under the light-shielding sheet; and (D) pressing together and heating the light-shielding sheet and the transparent body so as to fuse the light-shielding sheet onto the transparent body, thereby forming an optical lens unit.

Abstract: An apparatus includes a machine bed, a holder unit disposed movably on the machine bed, and an adhesion unit. A method for adhering a light-shielding sheet onto a transparent body includes: (A) moving the transparent body on a machine bed into a holder unit by suction; (B) moving the holder unit on the machine bed in a feeding direction; (C) cooperating with operation of the holder unit so as to apply glue to the transparent body; (D) cooperating with operation of the holder unit so as to move the transparent body on the machine bed to a position under the light-shielding sheet; and (E) pressing the light-shielding sheet against the transparent body so as to adhere the light-shielding sheet onto the transparent body, thereby forming an optical lens unit.

Abstract: A gear-forming cutter for forming a gear tooth on a non-metallic blank includes a spindle and a blade portion. The blade portion extends from the spindle along an axis of the spindle, and includes a blade surface and a surrounding surface. The blade surface has front and rear sides, and opposite first and second lateral sides. The surrounding surface is disposed around the axis, and extends from the first lateral side to the second lateral side. Any point of the first lateral side is spaced apart from the axis by a first radial distance. Any point of the second lateral side is spaced apart from the axis by a second radial distance smaller than the corresponding first radial distance. The first radial distance corresponding to the rear side is larger than that corresponding to the front side.

Abstract: A method for making a lens barrel includes the steps of: (a) forming a fusible mold core having at least one flange; (b) applying an insulating layer on the fusible mold core; (c) disposing the fusible mold core in a lens-barrel-forming mold; (d) feeding a molding material into the lens-barrel-forming mold to form the lens barrel between the lens-barrel-forming mold and the fusible mold core and adhered to the fusible mold core, the lens barrel having at least one inner cam groove corresponding to the flange of the fusible mold core; (e) removing the lens barrel together with the fusible mold core from the lens-barrel-forming mold; and (f) fusing the fusible mold core for separating the fusible mold core from the lens barrel.

Abstract: A gear-forming cutter for forming a gear tooth on a non-metallic blank includes a spindle and a blade portion. The blade portion extends from the spindle along an axis of the spindle, and includes a blade surface and a surrounding surface. The blade surface has front and rear sides, and opposite first and second lateral sides. The surrounding surface is disposed around the axis, and extends from the first lateral side to the second lateral side. Any point of the first lateral side is spaced apart from the axis by a first radial distance. Any point of the second lateral side is spaced apart from the axis by a second radial distance smaller than the corresponding first radial distance. The first radial distance corresponding to the rear side is larger than that corresponding to the front side.

Abstract: A method for processing a lens barrel includes the steps of: (a) providing a processing device including a processing shaft and a cutting tool; (b) moving the lens barrel and the processing shaft relative to each other so that an image of the cutting tool projected on a plane that intersects a tubular wall of the lens barrel is orthogonal to the tubular wall; (c) moving the processing shaft relative to the lens barrel so that the cutting tool is close to the tubular wall; (d) moving the processing shaft relative to the lens barrel so that the cutting tool is in touch with the tubular wall; (e) moving the processing shaft and the lens barrel relative to each other so that the lens barrel is formed with a continuous groove on the tubular wall; and (f) moving the cutting tool away from the lens barrel.

Abstract: A lens member includes a light-transmissive lens, and a light-shading layer. The light-transmissive lens has a first face, a second face opposite to the first face, a peripheral side surface extending between the first and second faces, and an effective light-transmissive region formed between the first and second faces within the peripheral side surface. The light-shading layer has a light-shading portion directly bonded to the first face of the lens, and has an outer peripheral end proximate to the peripheral side surface of the lens, and an inner peripheral end defining a first hole within the outer peripheral end. The first hole substantially corresponds to the effective light-transmissive region of the lens.

Abstract: A machine-implemented method is provided for forming a release surface of a mold. The mold has a mold cavity confined by an inner peripheral surface defining a mold cavity axis. The method includes the steps of: (a) bringing a grinding surface of a rotary grinding portion of a jig grinder into contact with a part of the inner peripheral surface such that the grinding surface is inclined at a predetermined angle relative to the mold cavity axis, and rotating the grinding portion such that the grinding surface grinds the part of the inner peripheral surface; (b) separating the grinding surface from the inner peripheral surface; (c) changing relative positions of the grinding portion and the inner peripheral surface in preparation for grinding another part of the inner peripheral surface; and (d) repeating the steps (a) to (c) until the release surface is formed.

Abstract: A high precision molding device for insert-molding optical lens comprises a stationary sub-mould and a movable sub-mould for engaging with the stationary sub-mould thereby forming a mould cavity therebetween for molding an optical lens. The molded lens has a body and a protection ring extending outside from the body, and is separated from the stationary sub-mould together with the movable sub-mould. The movable sub-mould includes a mould base, a core fixed with the mould base and a pushing means for pushing the molded lens off the movable sub-mould. The pushing means is circumferentially positioned at the mould base. The upper and bottom surfaces of the protection ring of the molded lens form textures to be foggy.

Abstract: A machine-implemented method is provided for forming a release surface of a mold. The mold has a mold cavity confined by an inner peripheral surface defining a mold cavity axis. The method includes the steps of: (a) bringing a grinding surface of a rotary grinding portion of a jig grinder into contact with a part of the inner peripheral surface such that the grinding surface is inclined at a predetermined angle relative to the mold cavity axis, and rotating the grinding portion such that the grinding surface grinds the part of the inner peripheral surface; (b) separating the grinding surface from the inner peripheral surface; (c) changing relative positions of the grinding portion and the inner peripheral surface in preparation for grinding another part of the inner peripheral surface; and (d) repeating the steps (a) to (c) until the release surface is formed.

Abstract: A process for finishing an end surface of a non-circular post is provided to obtain a good surface precision. The process includes the steps of providing a workpiece having a first end with a first end surface, mounting a filling block around the first end of the workpiece, and surface-finishing the first end surface of the workpiece and an extension end surface of the filling block, which are at least covered by an area bounded by a circular track, by using a cutter.

Abstract: The present invention relates to an instrument and method of aligning a collimator. The instrument includes a frame base, a clamp, a first axis stage, a second axis stage, and a rack. A ferrule grasping a fiber therein is inserted in a glass tube, and the glass tube is secured to the frame base by the clamp. A pinion is fixedly mounted on one end of a GRIN lens, which is inserted in the glass tube, and engaged with the rack. The first axis stage moves the GRIN lens along the cylindrical axis of the glass tube, and the second axis stage rotates the GRIN lens around the cylindrical axis of the glass tube. When a light beam emitted from the collimator reaches the maximum intensity, the instrument of the invention accomplishes the alignment of the collimator.

Abstract: A pressure-controlling device is used in an injection mold that includes a movable component, a stationary component, and a cavity defined by the movable and stationary components. The pressure-controlling device includes a piezoelectric actuator, a pressure sensor, and a control unit. The piezoelectric actuator is connected to the movable component for actuating the movable component. The pressure sensor is connected to the stationary component, and outputs a signal in response to pressure in the cavity. The control unit is connected electrically to the piezoelectric actuator and the pressure sensor, processes the signal from the pressure sensor, and controls the piezoelectric actuator to move the movable component and to adjust the pressure in the cavity.