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:
Apr. 22, 2008
Filed:
Nov. 12, 2004
Applicant:
Hiroshi Sakai, Nagano, JP;
Inventor:
Hiroshi Sakai, Nagano, JP;
Assignee:
NIDEC Sankyo Corporation, Nagano, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 31/00 (2006.01); G02B 5/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of producing a prism comprising a first prism component and a second prism component that are joined together along a partial reflection plane that is inclined with respect to the optical axis. The method has steps comprising measuring the refractive index for multiple base materials constructing the first prism component and the second prism component and joining the base materials having approximately the same refractive index measurements together along a partial reflection plane in such a manner that the refractive index measurements are associated with specified positions during the course of joining.