公开(公告)号：US20200333128A1

公开(公告)日：2020-10-22

申请号：US16764526

申请日：2018-10-30

Applicant: NEC CORPORATION ,  NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY

Inventor： Takeshi AKAGAWA ,  Masahiro KUBO ,  Katsumi ABE ,  Ersin ALTINTAS ,  Yuji OHNO ,  Tetsuri ARIYAMA ,  Ichiro ISHIMARU

IPC: G01B9/02 ,  G01J3/45

Abstract: Optical measuring apparatus includes: a light source irradiating an object to be measured; a splitter splitting transmitted light or reflected light from the object to be measured; a phase changer changing a phase of a first light which is one of the lights split; a phase fixer maintaining a phase of a second light which is the other light split; a multiplexer multiplexing lights output from the phase changer and the phase fixer; a detector detecting the light (interference image) output from the multiplexer; and a controller that extracts a reference point from the interference image, when a displacement of the reference point is detected, corrects a luminance value for each pixel of the interference images in accordance with a displacement of the object to be measured indicated by a displacement of the reference point, constructs an interferogram based on the luminance value for each pixel of the interference images after the correction.

公开(公告)号：US20180239944A1

公开(公告)日：2018-08-23

申请号：US15759880

申请日：2016-09-09

Applicant: NEC Corporation

Inventor： Yuji OHNO ,  Masahiro KUBO ,  Katsumi ABE ,  Kimiyasu TAKOH ,  Ersin ALTINTAS ,  Takeshi AKAGAWA ,  Tetsuri ARIYAMA ,  Ichiro ISHIMARU

IPC: G06K9/00 ,  A61B5/1172 ,  A61B5/00 ,  G01J3/447 ,  G01J3/28

CPC classification number: G06K9/0012 ,  A61B5/0075 ,  A61B5/1172 ,  A61B5/489 ,  G01J3/2823 ,  G01J3/447 ,  G06K9/00033 ,  G06K9/00087 ,  G06K9/2018

Abstract: A living body is accurately determined while minimizing increases in the size of a device and increases in the number of components. A living body determination device includes a spectroscopic device 104 that disperses light entering from a pedestal side and outputs the result; a light emission device 101 that emits first light toward the pedestal from a position facing the spectroscopic device 104 with the pedestal therebetween; a light emission device 102 that emits second light toward the pedestal from the spectroscopic device 104 side; an image acquisition device 105 that outputs image information indicating a brightness corresponding to the intensity of the light output by the spectroscopic device 104; and a calculation device 106 that acquires first image information regarding each of the spectra of the first light from the image acquisition device 105, acquires first spectroscopic information on the basis of each of the pieces of first image information, acquires second image information regarding each of the spectra of the second light from the image acquisition device 105, acquires second spectroscopic information on the basis of each of the pieces of second image information, and determines whether or not a measurement target 10a is a living body, based on the first and second spectroscopic information.

公开(公告)号：US20190204065A1

公开(公告)日：2019-07-04

申请号：US16322592

申请日：2017-08-07

Applicant: NEC CORPORATION ,  NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY

Inventor： Takeshi AKAGAWA ,  Masahiro KUBO ,  Katsumi ABE ,  Kimiyasu TAKOH ,  Ersin ALTINTAS ,  Yuji OHNO ,  Tetsuri ARIYAMA ,  Ichiro ISHIMARU

IPC: G01B9/02 ,  G01J3/45

CPC classification number: G01B9/02067 ,  G01B9/02041 ,  G01B9/02061 ,  G01B9/02068 ,  G01J3/45

Abstract: A light measurement device that maintains high measurement precision. The light measurement device includes: light source that irradiates light upon measurement object; branch part that splits transmitted light or reflected light from measurement object; phase-changing unit that changes the phase of one beam of the branched light beams; phase-fixing unit that maintains the phase of the other beam of the branched light beams; adjustment mechanism, which is provided in phase-changing unit or phase-fixing unit, for adjusting the propagation direction of light; multiplexer that causes the light emitted by each of phase-changing unit and phase-fixing unit to interfere with each other; detection unit that detects light that is interfered with by multiplexer; and control unit that controls the adjustment mechanism on the basis of the luminance values of an interference image that is detected by detection unit and adjusts the propagation direction of light in phase-changing unit or phase-fixing unit.