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1.发明授权Positional change measurement device, positional change measurement method, and image forming apparatus 有权位置变化测量装置，位置变化测量方法和图像形成装置公开(公告)号：US09228825B2
公开(公告)日：2016-01-05
申请号：US14208621
申请日：2014-03-13
申请人： Atsushi Takaura , Koji Masuda , Yasuhiro Nihei , Takeshi Ueda , Koichi Kudo , Taku Amada , Kenichi Shimizu , Asato Tamura
发明人： Atsushi Takaura , Koji Masuda , Yasuhiro Nihei , Takeshi Ueda , Koichi Kudo , Taku Amada , Kenichi Shimizu , Asato Tamura
CPC分类号： G01B11/043 , G03G15/00 , G03G15/5054 , G03G2215/00616
摘要： An objective is to achieve a positional change measurement device which measures positional change of a dynamic measured surface by using speckle patterns while easily reducing influence of fluctuations in a measurement environment temperature. Provided is a positional change measurement device including: a light source; an illuminating optical system configured to guide light from the light source to a measured surface; an imaging optical system; an image pickup device configured to acquire a speckle pattern by receiving reflection light from the measured surface via the imaging optical system; and detected-length compensation means for compensating for fluctuations in a detected length caused by temperature fluctuations. Positional change of the measured surface is measured based on a result of cross-correlation computation performed on multiple speckle patterns acquired at predetermined time intervals.
摘要翻译： 目的是实现利用散斑图案来测量动态测量表面的位置变化同时容易地减少测量环境温度波动的影响的位置变化测量装置。 提供一种位置变化测量装置，包括：光源; 照明光学系统，被配置为将来自所述光源的光引导到测量的表面; 成像光学系统; 被配置为通过经由所述成像光学系统从测量的表面接收反射光来获取散斑图案的图像拾取装置; 以及用于补偿由温度波动引起的检测长度的波动的检测长度补偿装置。 基于在以预定时间间隔获取的多个散斑图案上执行的互相关计算的结果来测量测量表面的位置变化。
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公开(公告)号：US10649221B2
公开(公告)日：2020-05-12
申请号：US15824034
申请日：2017-11-28
申请人： Asato Tamura
发明人： Asato Tamura
摘要： An optical processing apparatus includes a light source, a condensing lens, and a light shield. The light source emits a light. The condensing lens converts a light emitted from the light source into a Bessel beam and condenses the light onto a surface of an object. The light shield shields an outer edge portion of the light in a cross section of a direction orthogonal to the optical axis of the light. The light shield may shield the outer edge portion of the light after entering the condensing lens and before condensing onto the surface of the object in the cross section of the direction orthogonal to the optical axis of the light.
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公开(公告)号：US09883068B2
公开(公告)日：2018-01-30
申请号：US15011770
申请日：2016-02-01
申请人： Asato Tamura
发明人： Asato Tamura
CPC分类号： H04N1/0249 , H04N1/00989 , H04N1/024 , H04N1/028
摘要： An imaging unit includes an image pickup element extending along a surface parallel to an imaging surface, a circuit board including a circuit to drive the image pickup element, and a plurality of fixing members to fix the image pickup element and the circuit board. The circuit board includes at least one through hole on a straight line that extends in a longitudinal direction of the image pickup element and is provided with the plurality of the fixing members. The through hole is provided at a position between at least two of the plurality of the fixing members on the straight line.
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