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:
May. 26, 1981
Filed:
Oct. 03, 1979
Applicant:
Inventor:
Stafford M Ellis, East Preston, GB;
Assignee:
Elliott Brothers (London) Limited, Chelmsford, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350174 ; 434 44 ;
Abstract
A display head for an aircraft head-up display system wherein a display developed by a projector (11) is reflected to the observer in part by a semi-reflective coating (31a) on the side (29a) of the combiner light transmissive body (27) nearer the observer, and in part by a semi-reflective coating (31b) on the side (29b) of the combiner body further from the observer, the two coatings being positioned relative to one another and the projector to provide the observer with an uninterrupted instantaneous field of view of the display.