The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2005
Filed:
May. 13, 2003
Seiji Shimokawa, Kawasaki, JP;
Tatsuya Nagahama, Kawasaki, JP;
Kuniaki Obata, Yokohama, JP;
Hirotaka Matsubara, Kawasaki, JP;
Seiji Shimokawa, Kawasaki, JP;
Tatsuya Nagahama, Kawasaki, JP;
Kuniaki Obata, Yokohama, JP;
Hirotaka Matsubara, Kawasaki, JP;
Mitutoyo Corporation, Kawasaki, JP;
Abstract
A plurality of light emitting elements comprise a number of groups having light emitting colors different from each other. The light emitting element groups are arranged in ring shapes about an optical axis of an optical system in a plane or planes substantially orthogonal to the optical axis. A combining unit combines radiation light beams of different light emitting colors to generate illumination light having a given hue. The combining unit is provided downstream of the light emitting elements along a light emitting direction. A focusing unit focuses the illumination light in the direction toward the optical axis and is provided downstream of the combining unit. Accordingly, it is possible to direct illumination light having uniform and non-irregular hue, the hue corresponding to a surface color of an object to be measured, to the object to be measured.