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:
Jan. 07, 1992
Filed:
Dec. 24, 1990
Applicant:
Inventor:
Martin A Parker, Penfield, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362 84 ; 362296 ; 362310 ; 358491 ;
Abstract
An integrating cavity 20 has a diffusely-reflecting wall 22 that includes a fluorescent material for absorbing radiation in an unusable region of the electromagnetic spectrum and emitting radiation in response thereto in a usable region of the spectrum. A light source 10 provides radiation in both regions, which enters the cavity 20 through an input port 18, reflects from the wall 22 and exits through an output slit 24 toward an image plane 26. At least some of the unusable radiation is absorbed by the fluorescent material coating the wall 22 and reemitted as usable radiation toward the image plane 26.