Optical characteristic measuring apparatus

Patent metadata

Field	Value
Publication number	US-8970835-B2
Application number	US-201213670397-A
Country	US
Kind code	B2
Filing date	Nov 6, 2012
Priority date	Jul 19, 2012
Publication date	Mar 3, 2015
Grant date	Mar 3, 2015

Abstract

An optical characteristic measuring apparatus includes a hemispheric portion having a reflective surface on its inner wall, and a plane portion arranged to close an opening of the hemispheric portion and having a reflective surface on an inner-wall side of the hemispheric portion. The plane portion includes a first window occupying a range including a substantial center of curvature of the hemispheric portion for attaching a light source to the first window. At least one of the hemispheric portion and the plane portion includes a plurality of second windows arranged in accordance with a predetermined rule for extracting light from inside the hemispheric portion.

First claim

What is claimed is:

1. An optical characteristic measuring apparatus comprising:
a spherical body comprising:
a first window to which a light source is to be attached;
a reflective surface provided on an inner wall of the spherical body; and
a plurality of second windows provided symmetrically with respect to a line passing through a center of the spherical body and a center of said first window to extract light from inside said spherical body; and

a plurality of optical…

Assignees

• Otsuka Denshi Kk

Inventors

• Ohkubo Kazuaki
• Shiraiwa Hisashi

Classifications

• G01J1/0407

  Physics · mapped topic

• G01J2001/0481

  Physics · mapped topic

• G01J1/04

  Physics · mapped topic

• G01J3/0218

  Physics · mapped topic

• G01J2001/4252

  Physics · mapped topic