摘要:
[Technical Problem] To provide a differential evacuation system capable of easily maintaining, at a low cost, a large differential pressure between a light generation chamber and an illumination optical chamber in which optical processing, e.g. exposure, is performed by using extreme ultraviolet (EUV) light generated in the light generation chamber, and yet capable of sufficiently ensuring a desired optical path.[Solution to Problem] The differential evacuation system has a light generation chamber 10 that generates EUV light, an illumination optical chamber 100 in which optical processing is performed by using the EUV light generated in the light generation chamber 10, and a chamber connecting passage 150 that connects together the light generation chamber 10 and the illumination optical chamber 100 to guide the EUV light generated in the light generation chamber 10 into the illumination optical chamber 100. The chamber connecting passage 150 has a flow path constricting portion 151 and is increased in inner diameter in a conical tube shape at portions thereof that are at opposite sides, respectively, of the flow path constricting portion 151. An enlarged-diameter part 160 is provided at a position of the chamber connecting passage 150 that is closer to the light generation chamber 10, which is the higher in pressure of the two chambers 10 and 100, than the flow path constricting portion 151, and vacuum pumps 170 are attached to the enlarged-diameter part 160.
摘要:
There is provided an optical pickup apparatus that can obtain a stable servo signal by reducing stray light generated by diffraction in a recording layer other than a recording layer on which light is condensed. A hologram element provided in an optical pickup apparatus for recording information onto a recording medium and/or reproducing information on the recording medium by use of light includes fourth and fifth divisions where at least first-order diffracted light among diffracted light beams obtained by reflection and diffraction on a recording layer other than a light-condensed recording layer on which light is condensed by an objective lens so as not to be directed toward first and second light-receiving elements for detecting focus position information and third to eighth light-receiving elements for detecting track position information.
摘要:
A high-luminance light emitting element is manufactured by a method comprising: forming a light emitting layer on a first surface of a GaP substrate including the first surface and a second surface opposed to the first surface and having an area smaller than the first area, the light emitting layer emitting light of a wavelength λ permitted to pass through the GaP substrate; forming a plurality of side surfaces on the GaP substrate to be respectively aslant by substantially the same angle to become narrower toward the second surface; and forming a plurality of depressions and protrusions as high as 0.1λ to 3λ on the side surfaces.
摘要:
A laser peening apparatus for manufacturing a rotor using an electrical steel sheet with low iron loss for enabling high speed rotation of a motor. The laser peening apparatus includes a laser irradiating device for irradiating with a laser through a liquid the rotor made of an electrical steel sheet with low iron loss, and a drive device for moving the rotor relative to an irradiation spot of the laser so that the laser irradiates along a bridge side on an inner circumference of a magnet insertion window of the rotor.
摘要:
An optical pickup device has a semiconductor laser emitting light which is in turn branched via a diffraction grating into at least three beams of light including a main beam and two sub beams which are in turn condensed via an objective lens on an optical disk at a guide groove and reflected by the optical disk to provide three reflections of light which are in turn received by detectors, each divided into two regions, respectively, to generate a tracking error signal. The diffraction grating is divided into three regions including a first region, a second region and a third region located intermediate therebetween, each having a periodical structure out of phase, the periodical structure having grating grooves in a direction determined depending on the phase of the second region to incline relative to a direction perpendicular to the guide groove of the optical disk.
摘要:
There is provided an optical pickup apparatus that can obtain a stable servo signal by reducing stray light generated by diffraction in a recording layer other than a recording layer on which light is condensed. A hologram element provided in an optical pickup apparatus for recording information onto a recording medium and/or reproducing information on the recording medium by use of light includes fourth and fifth divisions where at least first-order diffracted light among diffracted light beams obtained by reflection and diffraction on a recording layer other than a light-condensed recording layer on which light is condensed by an objective lens so as not to be directed toward first and second light-receiving elements for detecting focus position information and third to eighth light-receiving elements for detecting track position information.
摘要:
Part of light emitted downward by an active layer is reflected by an electrode functioning as a reflective layer, and travels upward to radiate outside. Since the electrode is made of a metal, it reflects almost all light regardless of its incident angle, and light can be efficiently extracted.
摘要:
In a multiprocessor system of a hierarchy configuration as a parallel computer of a common-bus structure, a processing unit (120) in an intermediate stage has a processor (123) having a programmable function that is equal to a normal processor, an instruction memory (125), and a data memory (127). The processing unit (120) receives a status signal from a lower processor (143), and a DMA controller (151) having a memory for the transfer of large sized data performs compression, decompression, programmable load dispersion, and load dispersion according to the state of operation of each lower processor.
摘要:
An optical pickup converts a laser beam from a semiconductor laser (1) into a parallel ray with a collimator lens (2), and divides it into a main beam (30), a sub-beam (+1st order component) (31), and a sub-beam (−1st order component) (32) with a gradient multiple-division type phase difference grating (3). After passing through a beam splitter (4), an objective lens (5) condenses the light beams on a track (61) of an optical disc (6), and the reflected light that has passed through the objective lens 5 is reflected at the beam splitter (4) and is guided into optical detectors (8A, 8B, and 8C) by a condensing lens (7). Accordingly, in a tracking error signal detecting method using the push-pull signals of the main beam and sub-beams, an offset produced by an objective lens shift or a disc tilt can be cancelled at low cost without lowering the efficiency of using light.
摘要:
The present invention provides an image processing unit, an image processing system, and an image processing method capable of achieving a higher speed and a higher efficiency in a rendering and implementing a low cost of the system. The image processing unit according to the present invention comprises a main storing portion for storing information of three-dimensional objects, a plurality of calculating portions for processing images based on three-dimensional object information which are read from the main storing portion, and a hierarchical storing portion having a plurality of hierarchies and connected between the main storing portion and the plurality of calculating portions to store a part of information at a lower level into a higher level sequentially, wherein image processing by the plurality of calculating portions are performed in parallel.