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. 24, 1976
Filed:
Jun. 24, 1975
Applicant:
Inventors:
Ralph Warren Engstrom, Lancaster, PA (US);
David Eugene Bowser, Lancaster, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ; G01J / ;
U.S. Cl.
CPC ...
250226 ; 250216 ; 350311 ; 350316 ;
Abstract
A transparent dome formed from a segment of a spherical shell of uniform thickness has an optical filter on its surface. A photodetector is positioned on the concave side of the dome so that light rays passing through the dome, normal to its surface, will fall on the center of the photodetector.