公开(公告)号：US09759603B2

公开(公告)日：2017-09-12

申请号：US14843310

申请日：2015-09-02

Applicant: Sekonic Corporation

Inventor： Tomohide Kanzawa ,  Hiroshi Harada ,  Yasushi Fukazawa ,  Eigo Yoshikawa ,  Hirohiko Okabe

IPC: G01N21/25 ,  G01J3/02 ,  G01J1/04 ,  G01J1/02 ,  G01J3/46

CPC classification number: G01J3/0272 ,  G01J1/0233 ,  G01J1/0403 ,  G01J1/0411 ,  G01J1/0418 ,  G01J1/0422 ,  G01J1/0448 ,  G01J1/0474 ,  G01J3/0202 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0213 ,  G01J3/0216 ,  G01J3/0237 ,  G01J3/46

Abstract: This is to provide a photometric apparatus improved in measurement precision by improving the state of light incident to a sensor, which photometric apparatus 1 comprises a photometric sensor 30 into which light which is an object to be measured is incident, a signal processing means for processing a sensor output by the photometric sensor, and optical systems 50, 100, 92, 93 and 150 which introduces external light into the photometric sensor, wherein a columnar fiber rod 100 in which a center axis is provided along a direction perpendicular to a light receiving surface of the photometric sensor is provided at a part of the optical system.