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:
Sep. 12, 1989
Filed:
Oct. 20, 1988
Applicant:
Inventor:
Ronald J Straayer, South Windsor, CT (US);
Assignee:
The Gerber Scientific Instrument Company, South Windsor, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250235 ; 250236 ;
Abstract
A novel apparatus for use in generating a scan timing signal in a laser raster scanner includes an optical diffuser positioned to receive a scanned reference beam through a reference mask. The diffused, modulated reference beam is presented to an array of photodetectors. The number of photodetectors in the array is selected to be sufficient so that at least two photodetectors receive the diffused modulated reference beam simultaneously as the reference beam is scanned along the reference mask.