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. 27, 1983
Filed:
May. 11, 1981
Applicant:
Inventor:
Francis H Smith, York, GB;
Assignee:
Vickers Limited, , GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350524 ; 350527 ;
Abstract
An optical viewing apparatus and method is disclosed having improved focusing, in which two beams of light, which are mutually inclined at a fixed angle, are converged in the vicinity of a reflective viewed surface, and the relative distance between the apparatus and the surface is adjusted until the beams coincide at the surface.