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:
Jun. 06, 1978
Filed:
Jun. 13, 1977
Applicant:
Inventor:
Roger A Frech, Canoga Park, CA (US);
Assignee:
Terminal Data Corporation, Woodland Hills, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
355 43 ; 355 49 ; 355 51 ; 355 54 ; 355 66 ;
Abstract
A compound optical system apparatus, having a main optical path with a reflector, a shutter, an objective lens, and an image-receiving surface; and an alternately activated folded auxiliary optical path, with quasi-collimative reflective elements, one closely peripherally disposed to the main optical path, for passing a relatively small auxiliary image through the objective lens and displaying it upon the image-receiving surface on the side of the main image that is opposite to the side where the one reflective element is positioned with respect to the objective lens.