Abstract: A method for manufacturing a lens mold core includes the following steps. First, a blade is provided. Then, the blade is driven to a number of cutting points in this order from the peripheral to the center of a molding surface of the lens mold core facing the blade at a fixed pitch less than about 500 nm, according to the manufacturing parameters of the lens mold core. Next, the lens mold core is driven to move toward the blade along a central axis of the molding surface and to spin about the central axis at each cutting point until the blade cuts into the molding surface a desired depth, according to the manufacturing parameters of the lens mold core.

Abstract: A system for cutting a given portion of a surface of a core insert includes a piezoelectric actuator, a turning tool, a rotating member, a driving unit and a numerically-controlled unit. The controlling unit stores coordinates of the storing coordinates of each point on the given portion of the surface in a predetermined coordinate system, and compares the instant coordinates of the cutting portion of the turning tool with the stored coordinates of the given portion, thus controlling the piezoelectric actuator to drive the turning tool to cut the given portion of the surface if the coordinates of the cutting portion of the turning tool match with the stored coordinates of any point on the given portion of the surface.

Abstract: An optical system (20) for efficiently collimating an elliptical light beam includes a light source (21), a first lens (22), a second lens (23), and a third lens (24). The light source is adapted for providing an elliptical light beam defining different diverging angles in different directions, wherein any cross-section of the elliptical light beam emitted from the light source defines a long axis and a short axis which are perpendicular to each other. The first lens, the second lens, and the third lens are used for reconfiguring the elliptical light beam, thus obtaining a round light beam having equivalent short axis and long axis, and equivalent diverging angles in both horizontal direction and vertical direction. Optical centers of the first lens, the second lens, and the third lens commonly define a common optical axis along which the elliptical light beams travels.

Abstract: A solar cell assembly includes a first solar cell panel, a second solar cell panel, and at least one light guide assembly. The first solar cell panel has at least one first through hole defined therein. The second solar cell panel faces and is spaced from the first solar cell panel. The at least one light guide assembly comprises a light diverging lens engaged in the first through hole of the first solar cell panel, and a light guide body aligned with the light diverging lens and located between the first and second solar cell panels. The light diverging lens is configured for diverging sunlight incident thereupon and forming diverged light. The light guide body has an incident surface for receiving the diverged light, and emitting surfaces for emitting light to the second solar cell panel.

Abstract: An optical locating device (100) for identifying position includes a light emitter (101), a reflector (20), and a light receiver (30). The light emitter is disposed on a moving member (10) for emitting light. The reflector is configured for reflecting the light. The light receiver has at least one linear image sensor (301) for receiving the light reflected by the reflector and thereby generating an image signal corresponding to the light, and a processor (302) connecting to the image sensor to process the image signal for identifying the position of the moving member.

Abstract: An exemplary molding apparatus includes a first and a second mold core, a mold core receiving member, at least three positioning members and pushing members. The first and second mold core respectively have a first and a second molding portion, the first and second molding portion are configured for cooperatively defining a mold cavity. The mold core receiving member defines a through hole for receiving the second molding portion, at least three spaced receptacles in an inner wall thereof, and at least three spaced receiving holes in communication with the respective at least three receptacles. The at least three positioning members are received in the at least three receptacles. The at least three pushing members are movably received lengthwise in the at least three receiving holes, and being configured for urging the at least three positioning members to move toward the second molding portion thus hold the second molding portion.

Abstract: A system for cutting a given portion of a surface of a core insert includes a piezoelectric actuator, a turning tool, a rotating member, a driving unit and a numerically-controlled unit. The controlling unit stores coordinates of the storing coordinates of each point on the given portion of the surface in a predetermined coordinate system, and compares the instant coordinates of the cutting portion of the turning tool with the stored coordinates of the given portion, thus controlling the piezoelectric actuator to drive the turning tool to cut the given portion of the surface if the coordinates of the cutting portion of the turning tool match with the stored coordinates of any point on the given portion of the surface.

Abstract: A variable focal length lens assembly includes at least one lens group, and at least one optical lens module. The optical lens module includes multiple portions distributed in turn around a central axis of the optical lens module, wherein at least one of the multiple portions has a thickness different from its neighboring portions, and each portion of the optical lens module is selectively aligned in an optical path of the lens group.

Abstract: A solar cell assembly includes a first solar cell panel, a second solar cell panel, and at least one light guide assembly. The first solar cell panel has at least one first through hole defined therein. The second solar cell panel faces and is spaced from the first solar cell panel. The at least one light guide assembly comprises a light diverging lens engaged in the first through hole of the first solar cell panel, and a light guide body aligned with the light diverging lens and located between the first and second solar cell panels. The light diverging lens is configured for diverging sunlight incident thereupon and forming diverged light. The light guide body has an incident surface for receiving the diverged light, and emitting surfaces for emitting light to the second solar cell panel.

Abstract: An apparatus (100) for detecting rotational angle of a rotational element (110), includes a light emitting element (1) and an image detecting element (3). The light emitting element is disposed on the rotational element to emit light. The image detecting element has a plurality of reception zones (31, 32 . . . N) for receiving the light emitted. Each of the reception zones corresponds to an angular section of the rotational element.

Abstract: An exemplary molding apparatus includes a first and a second mold core, a mold core receiving member, at least three positioning members and pushing members. The first and second mold core respectively have a first and a second molding portion, the first and second molding portion are configured for cooperatively defining a mold cavity. The mold core receiving member defines a through hole for receiving the second molding portion, at least three spaced receptacles in an inner wall thereof, and at least three spaced receiving holes in communication with the respective at least three receptacles. The at least three positioning members are received in the at least three receptacles. The at least three pushing members are movably received lengthwise in the at least three receiving holes, and being configured for urging the at least three positioning members to move toward the second molding portion thus hold the second molding portion.

Abstract: A mold assembly (100) is provided including a mold plate (20), a mold core (30), a mold holder (10), an elastic member (80), and an adjusting block (40). The mold plate has a receiving cavity (14) defined therein. The mold plate is received within and fixed to the mold holder, and the mold core is movably received in the receiving cavity. The elastic member abuts the mold plate and the mold core. The adjusting member is movably received in the receiving cavity and is configured to selectably drive the adjusting block to move relative to the mold plate and to thereby adjust the position of the mold core in the receiving cavity.

Abstract: A fixture (10) for grinding apparatuses includes a base (12), a plurality of supporting components (14), and a pressure controlling apparatus (16). The base includes a cavity (126) containing a fluid medium (129), and the base defines a plurality of through holes (122) communicating with the cavity. One section of each supporting component is movably mounted in a through hole, and an end of each supporting component is exposed through its respective through hole and is configured for supporting an apparatus to be ground. The pressure controlling apparatus is connected to the base and facilitates selectable adjustment of a pressure of the medium.

Abstract: A surface topography detector includes a first sensor, a second sensor and a digital control unit. The angle defined between the center axis of the first sensor and the center axis of the second sensor is equal to or less than 90 degrees. The digital control unit is electrically connected with the first sensor and the second sensor and is arranged for controlling the movement of the first sensor and the second sensor and processing the output signals of the first sensor and the second sensor. The surface topography detector can detect a surface with a bigger range of gradient angle accurately.

Abstract: An apparatus (100) for detecting rotational angle of a rotational element (110), includes a light emitting element (1) and an image detecting element (3). The light emitting element is disposed on the rotational element to emit light. The image detecting element has a plurality of reception zones (31, 32 . . . N) for receiving the light emitted. Each of the reception zones corresponds to an angular section of the rotational element.

Abstract: An optical lens module and a variable focal length lens assembly are provided. The optical lens module includes multiple portions distributed around a central axis of the optical lens module, wherein each portion of the optical lens module has a thickness different from its neighboring portions. The variable focal length lens assembly includes at least one lens group and at least one optical lens module that comprise multiple portions distributed in turn around a central axis of the optical lens module, wherein at least one of the multiple portions has a thickness different from its neighboring portions and each portion of the optical lens module can be selectively aligned in an optical path of the lens group.

Abstract: An accurate moving device (100) for use in precision machinery includes a moving member (10), a light emitter (20), a light receiver (30) and a driving element (40). The light emitter is disposed on the moving member in a manner so as to emit light. The light receiver is configured for receiving the light and thereby generating a position signal of the moving member corresponding to the light, the signal is then used for controlling the moving member. The driving element (40) is configured for driving the moving member to move along a first axis and a second axis perpendicular to the first axis.

Abstract: An optical locating device (100) for identifying position includes a light emitter (101), a reflector (20), and a light receiver (30). The light emitter is disposed on a moving member (10) for emitting light. The reflector is configured for reflecting the light. The light receiver has at least one linear image sensor (301) for receiving the light reflected by the reflector and thereby generating an image signal corresponding to the light, and a processor (302) connecting to the image sensor to process the image signal for identifying the position of the moving member.

Abstract: An optical system (20) for efficiently collimating an elliptical light beam includes a light source (21), a first lens (22), a second lens (23), and a third lens (24). The light source is adapted for providing an elliptical light beam defining different diverging angles in different directions, wherein any cross-section of the elliptical light beam emitted from the light source defines a long axis and a short axis which are perpendicular to each other. The first lens, the second lens, and the third lens are used for reconfiguring the elliptical light beam, thus obtaining a round light beam having equivalent short axis and long axis, and equivalent diverging angles in both horizontal direction and vertical direction. Optical centers of the first lens, the second lens, and the third lens commonly define a common optical axis along which the elliptical light beams travels.

Abstract: The present invention relates to a method for fabricating an injection mold core for a plastic optical article. The method includes the steps of: (a) providing a pressing member with a pressing surface having a predetermined shape; (b) providing a substrate with an injection mold core preform being placed thereon; (c) pressing the pressing member onto the injection mold core preform thereby forming an injection mold core with a surface having a reversed shape of the pressing surface; (d) separating the pressing member from the injection mold core.