公开(公告)号：US20170347900A1

公开(公告)日：2017-12-07

申请号：US15544069

申请日：2015-12-03

Applicant: SONY CORPORATION

Inventor： TAKUYA NISHIMURA ,  KOTA AIZAWA ,  YOSHIHIRO WAKITA

IPC: A61B5/0295 ,  A61B5/00 ,  A61B5/026

CPC classification number: A61B5/0295 ,  A61B5/0037 ,  A61B5/004 ,  A61B5/0066 ,  A61B5/0077 ,  A61B5/026 ,  A61B5/0261

Abstract: [Object] To freely set a target region while ensuring a necessary speckle diameter, in speckle image capturing that uses coherent light. [Solution] Provided is an optical unit that radiates a coherent light such that the coherent light is incident in a target region of speckle image capturing in accordance with a pattern that includes a bright region and a dark region located uniformly in at least one direction in the target region. Provided is a measurement system including: an optical unit that radiates a coherent light such that the coherent light is incident in a target region in accordance with a pattern that includes a bright region and a dark region located uniformly in at least one direction in the target region; a light reception unit that receives a reflected light of the coherent light in the target region; and an imaging unit that captures an image of a speckle included in the reflected light.