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. 05, 1978
Filed:
Jun. 17, 1977
Applicant:
Inventor:
Yves Cojan, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350174 ;
Abstract
A display instrument using optical collimation for projecting data into the line of sight of an observer, comprising an optical lens which projects images of luminous objects focused at infinity onto a transparent combining glass. The luminous objects corresponding to data be displayed are positioned in the focal zone of the lens. The images are reflected by the glass into the observer's line of sight. A reflective optical element is arranged parallel to the glass, in the space contained between the optical lens and the field of vision of the observer, to provide an additional optical pupil which forms in conjunction with the original pupil of the instrument an enlarged pupil.