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:
Aug. 21, 2001
Filed:
Nov. 26, 1997
Applicant:
Inventor:
James A. Arns, Saline, MI (US);
Assignee:
Kaiser Optical Systems, Ann Arbor, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/32 ; G02B 2/744 ; G03H 1/00 ; G01J 3/18 ;
U.S. Cl.
CPC ...
G02B 5/32 ; G02B 2/744 ; G03H 1/00 ; G01J 3/18 ;
Abstract
A compact, preferably monolithic optical element converts an incident beam of light into a dispersed exit beam. A transmissive optical grating is supported between two reflective surfaces such that a beam is reflected to pass through the same grating at least twice to form the exit beam. In the preferred embodiment the grating is a volume hologram cemented between two optically transmissive substrates which include outwardly oriented surfaces that are parallel to one another and to the grating, and the internal reflections occur at these surfaces. Mirrors may also be used. A preferred method of grating formation is also disclosed.