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:
Mar. 10, 1998
Filed:
Jul. 25, 1995
Applicant:
Inventors:
John Holden, Hertfordshire, GB;
Christoph Dobrusskin, Eindhoven, NL;
Assignee:
Central Research Laboratories Limited, Hayes, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359630 ; 359633 ;
Abstract
An apparatus for displaying an image comprises a) a retroreflective screen, b) a polarising beam-splitter making an oblique angle with the screen, c) a device for projecting light from an image or object toward the screen through the beam-splitter, and d) a partially reflective light transmissive sheet being provided at an oblique angle to the beam-splitter such that the sheet may be view through the beam-splitter. The apparatus may be used as a head up display in which real and virtual images in respective positions may be viewed.