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:
Dec. 08, 1987
Filed:
Jul. 12, 1985
Applicant:
Inventor:
Juris Upatnieks, Ann Arbor, MI (US);
Assignee:
Environmental Research Institute of Michigan, Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350-37 ; 350174 ;
Abstract
A compact head-up display comprising a combiner which combines light energy from an outside view with light energy transmitted within the combiner and diffracted out by means of an upper diffraction grating. The head-up display disclosed further comprises an image source, a collimating lens, and a lower diffraction grating for diffracting the collimated light energy into the combiner.
Published as: