Abstract:
The broad range measurement exploiting the usual propagated light and the high resolution measurement mode exploiting near-field light are to be accomplished with a sole as-assembled optical probe. To this end, light radiated through an optical probe 13 having a light shielding coating layer 33 formed for defining a light radiating aperture D or light radiated at a core 31 of the optical probe 13 is propagated, as the optical probe 13 is moved in a direction towards and away from a surface for measurement 2a. The core of the optical probe is coated with a light shielding coating layer 33. In this manner, a spot of propagated light propagated through the core 31 or a spot of near-field light seeping from the light radiating aperture D is formed on the surface for measurement 2a, and light derived from the spot of light is detected.
Abstract:
An information reading device which comprises a semiconductor laser source which emits a semiconductor laser beam and a first condenser lens for converging the laser beam to form an irradiation beam. A beam shaping optical system is disposed on the optical path of the laser beam to form a predetermined beam section shape of the irradiation beam which is converged by the first condenser lens. A hologram disk is used for deflecting the irradiation beam. The information reading device further comprises an optical path separation system. The optical path of the irradiation beam is separated from that of the reflection beam reflected from the scanning surface irradiated by the irradiation beam. A second condenser lens is arranged from converging the reflection beam separated from the irradiation beam by the optical path separation means. And an optical sensor is arranged for detecting the reflection beam converged by the second condenser lens.
Abstract:
A small-size image formation optical system including two types of a plurality of Porro prism lenses, with an upper lens surface and a lower lens surface of each Porro prism lens being in the form of mirror images, said Porro prism lenses being combined to form arrays which are shifted by a half period in phase, capable of forming an erect real image.
Abstract:
An optical scanner unit for scanning a document includes a laser unit for emitting a laser beam used for scanning the document, an optical system in which the laser beam emitted from the laser unit travels to the document and a reflection light beam obtained by reflection of the laser beam on the document can turn back through the optical system, the optical system having a scanning device for moving the laser beam which passes through the optical system so that a two dimensional scanning of the document is carried out by the light beam, and an optical sensor for detecting the reflection light beam turning back through the optical system, wherein an image formed on the document is read based on results obtained by the optical sensor.
Abstract:
This invention relates to an image forming optical apparatus in which a number of micro-lenses are arranged, and images formed by said lenses are superposed to obtain a synthesized image. In the optical apparatus of this kind, individual images have their respective irradiance distribution, and therefore, unevenness in the irradiance distribution of the synthesized image has to be minimized. Where this optical system is used for a copier or the like, exposure is carried out through a slit. The width and position of the slit greatly influence the irradiance for exposure and on unevenness in irradiance. According to the invention, optimum width and position of the slit can be selected to minimize the unevenness in irradiance and provide sufficient exposure.
Abstract:
An optical data pattern generation device scans an original document to generate an optical dot pattern corresponding to an image on the document. Optical dots are defined by portions at each of which an electrode array comprising minute electrodes and a minute phosphor member overlap each other. The individual electrodes are selectively energized to generate any desired optical dot pattern.
Abstract:
A transmitting and copying machine comprising an optical system on the copying side having an image forming lens for guiding original-scanning reflected light onto a photosensitive material to form an image thereon, an optical system on the transmitting side having an optical axis biased in a main scanning direction, and a fixed mirror for refracting the optical axis of the optical system on the transmitting side such that the optical axis passes in front of the image forming lens to be guided onto the solid scanning element via the reading lens. The reading lens has a small maximum half image angle and the fixed mirror has a small reflecting surface. Then, the optical system on the transmitting side can be inserted very easily in the machine.
Abstract:
The broad range measurement exploiting the usual propagated light and the high resolution measurement mode exploiting near-field light are to be accomplished with a sole as-assembled optical probe. To this end, light radiated through an optical probe 13 having a light shielding coating layer 33 formed for defining a light radiating aperture D or light radiated at a core 31 of the optical probe 13 is propagated, as the optical probe 13 is moved in a direction towards and away from a surface for measurement 2a. The core of the optical probe is coated with a light shielding coating layer 33. In this manner, a spot of propagated light propagated through the core 31 or a spot of near-field light seeping from the light radiating aperture D is formed on the surface for measurement 2a, and light derived from the spot of light is detected.
Abstract:
An optical head device for recording and reproducing information includes beam splitting and converging mechanisms which has a first portion and a second portion secured to the first portion and is disposed on an optical path of light reflected from a photo-magnetic disk.The first portion is adapted to split the reflected light received by the beam splitting and converging means into two beams which propagate in at least two directions different from each other and adapted to proportion the amount of reflected light in each of the two beams by means of the magnitude of the p-polarized component contained in the reflected light.The second portion is adapted to converge separately the two split beams.The converged two beams are used for reproducing binary data in the photo-magnetic disk.
Abstract:
A casing in the form of a slender hollow structure has a slit-shaped entrance aperture defined in an upper cover thereof and a slit-shaped exit aperture defined in a lower cover thereof. The casing houses a covex roof-shaped mirror having a convex reflecting surface, a lens array, a concave roof-shaped mirror array having an array of convex reflecting surfaces, and a spacer interposed between the concave roof-shaped mirror array and the lens array to keep them spaced apart. The upper and lower covers of the casing are integrally formed with or securely coupled to the spacer. A light shield plate lies between the corner of the convex roof-shaped mirror and the lens array, and a reflecting plate is mounted on the upper cover of the casing for reflecting light from a light source to an object to be imaged. A sensor for detecting the amount of light emitted from the light source is also mounted on the casing.