Abstract: To improve the reliability to an environmental temperature change of an optical pickup, an optical pickup 7 has a semiconductor laser 711 for generating a laser beam. An objective lens drive leads the laser beam to a predetermined position of a disk. The semiconductor laser and objective lens drive are mounted on a pickup hosing 70. The objective lens drive has a movable portion 74 and the movable portion has an objective lens 716 for condensing the laser beam on the recording face of the disk. A fixed portion 72 holds the movable portion through a support member. The fixed portion has a magnetic yoke 75. An extended portion formed by extending a part of the yoke to the fixed portion side and the upside 72b of a cutout formed at the intermediate portion of the fixed portion in the tracking direction are adhered and fixed.

Abstract: A small-sized optical disc drive includes one voice coil motor magnet within which a tracking coil and two focusing coils are disposed such that the tracking coil straddles the two poles of permanent magnets that are adjacently disposed. The two focusing coils are disposed on either side of the tracking coil, with each of the two focusing coils being only disposed over one of the permanent magnets.

Abstract: An optical switch includes an input optical fiber, first and second output optical fibers, a movable mirror for switching over an optical path between the input optical fiber and an output optical fiber, and collimator lenses disposed on optical paths formed between the input optical fiber and the output optical fibers. When drive force is applied, the movable mirror assumes a first or second position to form an optical path between the input optical fiber and the first or second output optical fiber. When drive force is not applied to the movable mirror, an optical path is formed between the optical path in the first position and that in the second position. In the first position, a first part of the movable mirror comes in contact with a substrate. In the second position, a part of the movable mirror different from the first part comes in contact with the substrate.

Abstract: In an optical head, if a lens is reduced in size so that it can be integrated with a light source and a photodetector, other optical components as well as the lens must be reduced in size, which would result in greater difficulties in handling for assembly and adjustment purposes. The invention allows large quantities of ultra-small optical heads to be produced accurately and at low cost, the optical heads being easy to adjust and not requiring the handling of minute components for adjustment purposes. A first substrate includes lenses for focusing light on an information storage medium, a second substrate includes detectors and disposed on the surface thereof, and a layer, which is disposed between the first and second substrates, includes prisms and mirrors. The layer also includes cavities in which light sources are disposed. The individual substrates are formed in the form of wafers with the lenses, mirrors, prisms, light sources, and photodetectors disposed thereon.

Abstract: A vehicle headlight having a light source to emit light and a reflector for illuminating forward the light emitted from the light source, wherein the reflector is comprising a plurality of movable mirrors to be operated independently and optionally and a fixed mirror disposed outside these movable mirrors, whereby the light emitted from the light source to the movable mirrors are not blocked mutually so that a distribution of light illuminated from the vehicle headlight is minutely and quickly controlled.

Abstract: A method of manufacturing an optical head includes joining of a first substrate on which a plurality of lenses are formed in an array, a second substrate on which a plurality of prisms and mirrors are formed in an array, and a third substrate on which a plurality of detectors and light sources are formed in an array, after positioning of the individual substrates, and cutting the joined substrates along the rows and columns of the array.

Abstract: In this light distribution control device in order to provide a vehicular lighting fixture for an Adaptive Frontlighting System (AFS) in which a lot of light distribution patterns can be set without making the entire lighting fixture larger, beams which link said movable substrates to said inner frames and beams which link said inner frames to said outer frame are mutually orthogonal, and a light distribution pattern is set by deforming under torsion the beams which link said movable substrates to said inner frames and the beams which link said inner frames to said outer frame, and swinging each of said movable substrates with respect to said outer frame in the biaxial directions independently.

Abstract: A small-size thin-bodied 3-dimensional matrix switch using a micro mirror array, comprises a collimator array with a plurality of collimators coupled to optical fibers, a mirror array with a plurality of movable mirrors, in which each movable mirror has light from a first collimator of the collimator array optically coupled thereto, a first mirror which has the light from the mirror of the mirror array optically coupled thereto, a second mirror which has the light from the first mirror optically coupled thereto, and a second collimator of the collimator array, which has the light from the second mirror coupled thereto, wherein the light leaving the second mirror passes the first mirror and the mirror array and optically couples to the second collimator.

Abstract: A small-sized optical disc drive includes one voice coil motor magnet within which a tracking coil and two focusing coils are disposed such that the tracking coil straddles the two poles of permanent magnets that are adjacently disposed. The two focusing coils are disposed on either side of the tracking coil, with each of the two focusing coils being only disposed over one of the permanent magnets.

Abstract: The present invention provides a method of making a mold for manufacturing a microlens having a smooth surface and an arbitrary aspherical surface, or more specifically, an aspheric microlens of dimensions such that an aperture is equal to or less than 1 mm and a thickness is equal to or more than 0.5 mm. A mask layer having plural circular apertures with different sizes formed therein for a mold for one lens is formed on a silicon substrate. Plural holes are formed for the lens in the silicon substrate by applying anisotropic dry etching to a surface to be processed, which is the surface having the mask layer formed thereon. The depths of the respective holes vary depending on the sizes of the circular apertures. Isotropic etching is performed to remove sidewalls of the plural holes with different depths formed in the silicon substrate, thereby merging the holes into one hole corresponding to the lens.

Abstract: A beam direction module which can be applied to an optical switch, comprising: a collimator support member; a first mirror substrate including first micro-mirrors, and first windows through which beams can pass; a first electrode substrate including first mirror driving electrodes, and second windows through which beams can pass; a first spacer; a second mirror substrate including second micro-mirrors, and third windows through which beams can pass; a second electrode substrate including second mirror driving electrodes, and fourth windows through which beams can pass; a second spacer; and an inter-mirror spacer, wherein the first electrode substrate, the first spacer, the first mirror substrate, the inter-mirror spacer, the second mirror substrate, the second spacer and the second electrode substrate are stacked successively on the collimator support member and fixed between caps and the collimator support member while pins protruding from the collimator support member are inserted into alignment through-hol

Abstract: An optical switch includes an input optical fiber, first and second output optical fibers, a movable mirror for switching over an optical path between the input optical fiber and an output optical fiber, and collimator lenses disposed on optical paths formed between the input optical fiber and the output optical fibers. When drive force is applied, the movable mirror assumes a first or second position to form an optical path between the input optical fiber and the first or second output optical fiber. When drive force is not applied to the movable mirror, an optical path is formed between the optical path in the first position and that in the second position. In the first position, a first part of the movable mirror comes in contact with a substrate. In the second position, a part of the movable mirror different from the first part comes in contact with the substrate.

Abstract: In an optical head, if a lens is reduced in size so that it can be integrated with a light source and a photodetector, other optical components as well as the lens must be reduced in size, which would result in greater difficulties in handling for assembly and adjustment purposes. The invention allows large quantities of ultra-small optical heads to be produced accurately and at low cost, the optical heads being easy to adjust and not requiring the handling of minute components for adjustment purposes. A first substrate includes lenses for focusing light on an information storage medium, a second substrate includes detectors and disposed on the surface thereof, and a layer, which is disposed between the first and second substrates, includes prisms and mirrors. The layer also includes cavities in which light sources are disposed. The individual substrates are formed in the form of wafers with the lenses, mirrors, prisms, light sources, and photodetectors disposed thereon.

Abstract: In this light distribution control device in order to provide a vehicular lighting fixture for an Adaptive Frontlighting System (AFS) in which a lot of light distribution patterns can be set without making the entire lighting fixture larger, beams which link said movable substrates to said inner frames and beams which link said inner frames to said outer frame are mutually orthogonal, and a light distribution pattern is set by deforming under torsion the beams which link said movable substrates to said inner frames and the beams which link said inner frames to said outer frame, and swinging each of said movable substrates with respect to said outer frame in the biaxial directions independently.

Abstract: To improve the reliability to an environmental temperature change of an optical pickup, an optical pickup 7 has a semiconductor laser 711 for generating a laser beam. An objective lens drive leads the laser beam to a predetermined position of a disk. The semiconductor laser and objective lens drive are mounted on a pickup hosing 70. The objective lens drive has a movable portion 74 and the movable portion has an objective lens 716 for condensing the laser beam on the recording face of the disk. A fixed portion 72 holds the movable portion through a support member. The fixed portion has a magnetic yoke 75. An extended portion formed by extending a part of the yoke to the fixed portion side and the upside 72b of a cutout formed at the intermediate portion of the fixed portion in the tracking direction are adhered and fixed.

Abstract: A beam direction module which can be applied to an optical switch, comprising: a collimator support member; a first mirror substrate including first micro-mirrors, and first windows through which beams can pass; a first electrode substrate including first mirror driving electrodes, and second windows through which beams can pass; a first spacer; a second mirror substrate including second micro-mirrors, and third windows through which beams can pass; a second electrode substrate including second mirror driving electrodes, and fourth windows through which beams can pass; a second spacer; and an inter-mirror spacer, wherein the first electrode substrate, the first spacer, the first mirror substrate, the inter-mirror spacer, the second mirror substrate, the second spacer and the second electrode substrate are stacked successively on the collimator support member and fixed between caps and the collimator support member while pins protruding from the collimator support member are inserted into alignment through-hol

Abstract: A small-size thin-bodied 3-dimensional matrix switch using a micro mirror array, comprises a collimator array with a plurality of collimators coupled to optical fibers, a mirror array with a plurality of movable mirrors, in which each movable mirror has light from a first collimator of the collimator array optically coupled thereto, a first mirror which has the light from the mirror of the mirror array optically coupled thereto, a second mirror which has the light from the first mirror optically coupled thereto, and a second collimator of the collimator array, which has the light from the second mirror coupled thereto, wherein the light leaving the second mirror passes the first mirror and the mirror array and optically couples to the second collimator.

Abstract: In order to provide a small-sized and compact optical switch of 1×4 type. Two movable optical fibers are fixed on a substrate by a fixing block disposed in a middle portion of the fibers. Two movable blocks made of a soft magnetic body are mounted to the both ends of the movable optical fibers. Two soft magnetic fixing blocks are arranged on the substrate for fixing one optical fiber so as to oppose to one of the movable block, and for fixing four optical fibers so as to oppose to the movable block, respectively. Two movable blocks can be independently moved with respect to the respective fixing blocks by means of actuators. Further, it is possible to detect a position of each movable block with respect to the fixing block by means of detecting electrodes.

Abstract: In an optical switch system for switching over plural input lights and plural output lights corresponding thereto through spatial optical connection therebetween, having: a first reflection mirror to be directed with an input light and being controllable in position thereof; a second reflection mirror disposed opposite to the first reflection mirror, for reflecting the light reflected on the first reflection mirror, so as to outputted it therefrom; means for controlling positions of the first and second reflection mirrors, respectively; and means for adjusting the position of the first and second mirrors, which are controller by the controlling means, wherein a reference light being substantially different from the input light in wavelength is generated; both the reference light and the input light reflect upon the first and second reflection mirrors; and (c) optical intensity of the reference light selectively diverged from the reflection light is detected, thereby controlling positions of the first and said

Abstract: In an optical switch system for switching over plural input lights and plural output lights corresponding thereto through spatial optical connection therebetween, having: a first reflection mirror to be directed with an input light and being controllable in position thereof; a second reflection mirror disposed opposite to the first reflection mirror, for reflecting the light reflected on the first reflection mirror, so as to outputted it therefrom; means for controlling positions of the first and second reflection mirrors, respectively; and means for adjusting the position of the first and second mirrors, which are controller by the controlling means, wherein a reference light being substantially different from the input light in wavelength is generated; both the reference light and the input light reflect upon the first and second reflection mirrors; and (c) optical intensity of the reference light selectively diverged from the reflection light is detected, thereby controlling positions of the first and said