公开(公告)号：US20200015686A1

公开(公告)日：2020-01-16

申请号：US16578744

申请日：2019-09-23

申请人： Kazuki Funahashi ,  Atsushi Takaura ,  Yasuo Miyoshi

发明人： Kazuki Funahashi ,  Atsushi Takaura ,  Yasuo Miyoshi

IPC分类号： A61B5/024 ,  A61B5/0285

摘要： A pulse wave measuring device includes a signal divider configured to divide a first corrected signal and a second corrected signal into a plurality of segments, respectively, each of which corresponds to a cycle of a pulse wave of a living body, the first corrected signal and the second corrected signal being results obtained through a first correction and a second correction respectively using a first signal and a second signal that are extracted from image data and that change in association with the pulse wave; an influence degree calculator configured to calculate a value indicating a degree of a noise influence in each of the first corrected signal and the second corrected signal for each of the plurality of segments; and a peak time detector configured to detect a time of occurrence of a peak in one of the first corrected signal or the second corrected signal.

公开(公告)号：US20170150892A1

公开(公告)日：2017-06-01

申请号：US15357618

申请日：2016-11-21

申请人： Kazuki Funahashi ,  Atsushi Takaura ,  Yasuo Miyoshi

发明人： Kazuki Funahashi ,  Atsushi Takaura ,  Yasuo Miyoshi

IPC分类号： A61B5/024 ,  A61B5/0285

CPC分类号： A61B5/024 ,  A61B5/0077 ,  A61B5/02416 ,  A61B5/02438 ,  A61B5/0285 ,  A61B5/6898 ,  A61B2576/02

摘要： A pulse wave measuring device includes a signal divider configured to divide a first corrected signal and a second corrected signal into a plurality of segments, respectively, each of which corresponds to a cycle of a pulse wave of a living body, the first corrected signal and the second corrected signal being results obtained through a first correction and a second correction respectively using a first signal and a second signal that are extracted from image data and that change in association with the pulse wave; an influence degree calculator configured to calculate a value indicating a degree of a noise influence in each of the first corrected signal and the second corrected signal for each of the plurality of segments; and a peak time detector configured to detect a time of occurrence of a peak in one of the first corrected signal or the second corrected signal.

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

IPC分类号： G01B11/14 ,  G01B11/04 ,  G03G15/00

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。

公开(公告)号：US20140268180A1

公开(公告)日：2014-09-18

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

IPC分类号： G01B11/14

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。

公开(公告)号：US08610968B2

公开(公告)日：2013-12-17

申请号：US13846425

申请日：2013-03-18

申请人： Atsushi Takaura ,  Nobuaki Ono ,  Yasuo Sakurai ,  Yasunobu Youda ,  Kazuya Miyagaki ,  Masahiro Itoh

发明人： Atsushi Takaura ,  Nobuaki Ono ,  Yasuo Sakurai ,  Yasunobu Youda ,  Kazuya Miyagaki ,  Masahiro Itoh

IPC分类号： H04N1/04

CPC分类号： H04N1/02895 ,  H04N1/02815 ,  H04N1/0285 ,  H04N1/02865 ,  H04N1/1013 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/0081

摘要： A document illuminating system includes a plurality of light emitting elements arranged in an array, a reflective element which guides light emitted from the light emitting elements to a document read area of a certain width and length. The reflective element includes first to third reflective portions. The second reflective portion includes one or more planar reflective faces and is disposed so that the reflective faces reflect light from the light emitting elements to one or both of the first and third reflective portions without other reflective elements. The first and third reflective portions each include one or more planar reflective faces and are disposed so that their reflective faces oppositely illuminate the document read area together by reflecting light from one or both of the light emitting elements and the second reflective portion to the document read area without other reflective elements.

公开(公告)号：US07938545B2

公开(公告)日：2011-05-10

申请号：US12909540

申请日：2010-10-21

申请人： Atsushi Takaura ,  Kazuhiro Fujita ,  Nobuo Sakuma

发明人： Atsushi Takaura ,  Kazuhiro Fujita ,  Nobuo Sakuma

IPC分类号： G03B21/28

CPC分类号： G03B21/28 ,  G02B13/16 ,  G02B17/0816 ,  G02B17/0848 ,  G02B17/0852

摘要： A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected.

摘要翻译： 公开了一种用于图像投影装置的投影光学系统，其利用来自光源的照明光照射形成根据调制信号的图像的灯泡。 投影光学系统包括沿着光路布置的第一和第二光学系统，该光学路径以从灯泡的下游侧的上游到下游描述的顺序限定上游 - 下游方向。 第一光学系统包括至少一个屈光度系统并且具有正的功率。 第二光学系统包括具有功率并且具有正功率的至少一个反射表面。 由灯泡形成的图像形成为光路中的中间图像，并且中间图像被放大和投影。

公开(公告)号：US20100157421A1

公开(公告)日：2010-06-24

申请号：US12160818

申请日：2007-11-28

申请人： Issei Abe ,  Kazuhiro Fujita ,  Atsushi Takaura

发明人： Issei Abe ,  Kazuhiro Fujita ,  Atsushi Takaura

IPC分类号： G02B17/08 ,  G02B15/14

CPC分类号： G03B21/2066 ,  G02B17/0852 ,  G02B17/0896 ,  G03B21/005 ,  G03B21/10 ,  G03B21/28

摘要： A projection optical system comprising a first optical system configured to form a first image conjugated with an object and a second optical system configured to project a second image conjugated with the first image toward a projection surface, in which at least one of the first optical system and second optical system comprises at least one optical element(s) movable relative to the object is provided, wherein an image distance of the projection optical system is changed and a size of the second image is changed, by moving at least one of the optical element(s) relative to the object.

摘要翻译： 一种投影光学系统，包括被配置为形成与物体共轭的第一图像的第一光学系统和配置成将与第一图像共轭的第二图像投影到投影表面的第二光学系统，其中，第一光学系统 并且第二光学系统包括相对于物体可移动的至少一个光学元件，其中通过移动光学系统中的至少一个来改变投影光学系统的图像距离并改变第二图像的尺寸 元素相对于对象。

公开(公告)号：US07564508B2

公开(公告)日：2009-07-21

申请号：US11374317

申请日：2006-03-14

申请人： Hiroyuki Sugimoto ,  Toshiaki Tokita ,  Kazuhiro Fujita ,  Toshiharu Murai ,  Yasuyuki Takiguchi ,  Atsushi Takaura ,  Kazuya Miyagaki ,  Takanobu Osaka

发明人： Hiroyuki Sugimoto ,  Toshiaki Tokita ,  Kazuhiro Fujita ,  Toshiharu Murai ,  Yasuyuki Takiguchi ,  Atsushi Takaura ,  Kazuya Miyagaki ,  Takanobu Osaka

IPC分类号： G02F1/13 ,  G02F1/133 ,  G02F1/135 ,  G02F1/1335 ,  G02F1/1347 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/141 ,  G02F1/1343 ,  C09K19/02

CPC分类号： G02F1/141 ,  G02F1/134363 ,  G02F1/13471 ,  G02F2001/133638 ,  G02F2001/133742 ,  G02F2001/291 ,  G09G3/2022 ,  G09G3/3629 ,  G09G2300/0426 ,  G09G2340/0414 ,  G09G2340/0421 ,  G09G2340/145 ,  H04N9/3105 ,  H04N9/3114

摘要： A light path shift device is disclosed that is able to divide an effective region of a light path and drive the divided regions independently. The light path shift device includes a liquid crystal layer held between at least two opposite transparent substrates, the liquid crystal layer being homeotropically aligned and being able to form a chiral smectic C phase; and plural electrodes for applying an electric field in the liquid crystal layer in a horizontal direction. An effective region of the liquid crystal layer through which a light path passes is divided into plural sub-regions, plural light path shift elements with the electrodes formed thereon are stacked only at positions corresponding to the sub-regions, and are arranged so that boundary lines of the sub-regions are in agreement when being viewed along the direction of light propagation.

摘要翻译： 公开了能够划分光路的有效区域并驱动分割区域的光路移动装置。 光路移动装置包括保持在至少两个相对的透明基板之间的液晶层，液晶层是垂直取向的并且能够形成手性近晶C相; 以及用于在液晶层中沿水平方向施加电场的多个电极。 光路通过的液晶层的有效区域被分成多个子区域，其上形成有电极的多个光路移动元件仅在与子区域对应的位置处堆叠，并且被布置成使得边界 当沿着光传播的方向观察时，子区域的线是一致的。

公开(公告)号：US20090015801A1

公开(公告)日：2009-01-15

申请号：US12233653

申请日：2008-09-19

申请人： Atsushi TAKAURA ,  Kazuhiro Fujita ,  Nabuo Sakuma

发明人： Atsushi TAKAURA ,  Kazuhiro Fujita ,  Nabuo Sakuma

IPC分类号： G03B21/28

CPC分类号： G03B21/28 ,  G02B13/16 ,  G02B17/0816 ,  G02B17/0848 ,  G02B17/0852

摘要： A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected.

公开(公告)号：US07125121B2

公开(公告)日：2006-10-24

申请号：US10370737

申请日：2003-02-24

申请人： Kazuya Miyagaki ,  Kenji Kameyama ,  Takanobu Osaka ,  Ikuo Katoh ,  Atsushi Takaura ,  Kenji Namie ,  Yasuyuki Takiguchi

发明人： Kazuya Miyagaki ,  Kenji Kameyama ,  Takanobu Osaka ,  Ikuo Katoh ,  Atsushi Takaura ,  Kenji Namie ,  Yasuyuki Takiguchi

IPC分类号： G03B21/28 ,  G02F1/1335 ,  G02F1/00 ,  G02B27/10 ,  G02B27/44 ,  G02B5/18 ,  H04N5/74

CPC分类号： H04N5/7416 ,  H04N9/3188

摘要： An image display apparatus includes an indicating element which modulates or emits light as a pixel in accordance with image information. A displacement unit optically displaces a position of the pixel for each of two or more sub-fields constituting an image field corresponding to the image information. A projection unit enlarges the pixel and projects an enlarged pixel on a screen. A pixel-profile deformation unit changes an optical intensity profile of the pixel.