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. 07, 1979
Filed:
Aug. 29, 1977
Applicant:
Inventor:
Joseph A La Russa, Yorktown Heights, NY (US);
Assignee:
Farrand Optical Co., Inc., Valhalla, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350-372 ; 350147 ; 350157 ; 350174 ; 350293 ;
Abstract
Undesired images and reflections are eliminated in an in-line infinity display system by tilting the bi-refringent package of the display system at an angle with respect to a plane normal to the optical axis of the curved mirror in the display system and the observer's location so that the undesired images and reflections are directed outside the observer's field of view.
La Russa, Joseph. (1979). Optical image-forming apparatus with tilted bi-refringent elements (U.S. Patent No. 4163542). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4163542
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile