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1.发明授权公开(公告)号：US10520376B2
公开(公告)日：2019-12-31
申请号：US15787429
申请日：2017-10-18
摘要： In one aspect, a load cell includes an elastic body, first optical unit, second optical unit, detector, and computation unit. The first optical unit has a light source, a first diffraction grating on which light from the light source is incident, and a light-receiving unit. The first optical unit is fixed to a first end portion of the elastic body and arranged within a hollow portion of the elastic body. The second optical unit has a second diffraction grating on which diffracted light from the first diffraction grating is incident to generate interference light. The second optical unit is fixed to a second end portion of the elastic body and arranged within the hollow portion. The detector detects the interference light. The computation unit computes a relative displacement amount of the second diffraction grating relative to the first diffraction grating on the basis of a signal obtained by the detector.
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公开(公告)号：US09719809B2
公开(公告)日：2017-08-01
申请号：US15003548
申请日：2016-01-21
CPC分类号： G01D5/266 , G01D5/34715 , G01D5/38 , G02B27/4255 , G02B27/4272
摘要： An optical unit includes: a first diffraction grating where light from a light source enters; a second diffraction grating that generates interference light as a result of diffracted light rays emitted from the first diffraction grating entering the second diffraction grating; and an optical member including a pair of reflective surfaces that are parallel and opposite to each other, the optical member being configured such that the pair of reflective surfaces respectively reflect ±mth-order diffracted light rays that are diffracted light rays of a specific order among a plurality of orders of the diffracted light rays emitted from the first diffraction grating so as to guide the ±mth-order diffracted light rays to the second diffraction grating, where m is a natural number.
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公开(公告)号：US10012519B2
公开(公告)日：2018-07-03
申请号：US14989675
申请日：2016-01-06
摘要： A displacement measurement device includes: a light source; a first diffraction grating and a second diffraction grating arranged along a path of light from the light source and movable relative to one another, the first and second diffraction gratings generating diffracted light; an optical sensor that detects interference light produced by interference between −nth order diffracted light generated as a result of the second diffraction grating diffracting +nth order diffracted light from the first diffraction grating and +nth order diffracted light generated as a result of the second diffraction grating diffracting −nth order diffracted light from the first diffraction grating, where n is a natural number greater than or equal to 1; and a calculation unit calculating, according to a signal from the optical sensor, a relative displacement between the first and second diffraction gratings in a direction orthogonal to an optical axis of the first and second diffraction gratings.
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公开(公告)号：US20180066966A1
公开(公告)日：2018-03-08
申请号：US15692374
申请日：2017-08-31
IPC分类号： G01D5/38
CPC分类号： G01D5/38 , G01D5/266 , G01D5/34715 , G02B27/4272
摘要： A displacement measuring device according to the present invention includes a diffraction grating that receives light from a light source, the first diffraction grating including a plurality of grating pattern regions respectively having prescribed diffraction grating patterns, grating pitches of the plurality of grating pattern regions being equal to one another, the plurality of grating pattern regions being arranged in a direction that is orthogonal to a direction in which the prescribed diffraction grating patterns extend; a second diffraction grating that produces interference light upon receiving diffracted light rays emitted from the first diffraction grating; and a light detector that receives the interference light emitted from the second diffraction grating, the light detector including a plurality of photodetectors, the plurality of photodetectors being arranged along a first direction that is orthogonal to a direction in which interference fringes created by the interference light extend.
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公开(公告)号：US08715805B2
公开(公告)日：2014-05-06
申请号：US13748395
申请日：2013-01-23
发明人： Isao Matsuda , Takaki Hamamoto , Takuo Kodaira
IPC分类号： G11B7/24 , G11B7/246 , G11B7/2467
CPC分类号： G11B7/246 , G11B7/24027 , G11B7/2467 , G11B7/2492 , G11B2007/24612 , Y10T428/21
摘要： An object of the present invention is to provide a recordable recording medium that suppresses increase in terminal noise and does not generate a BCA signal read error. The present invention provides a recordable optical recording medium comprising a substrate as well as at least a reflection layer, recording layer and light transmission layer provided on the substrate, wherein the recording layer of said optical recording medium contains (a) an azo metal complex dye and (b) another dye whose DSC decomposition heat value is 50 cal/g to 200 cal/g and λmax in TFP solution is 250 to 400 nm.
摘要翻译： 本发明的目的是提供一种可抑制终端噪声增加并且不产生BCA信号读取错误的可记录记录介质。 本发明提供了一种可记录光学记录介质，其包括基板以及至少设置在基板上的反射层，记录层和光透射层，其中所述光记录介质的记录层包含（a）偶氮金属络合物染料 和（b）DSC分解热值为50cal / g至200cal / g，TFP溶液中的λmax为250-400nm的另一种染料。
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