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.:

US 6421183 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 16, 2002

Filed:

Feb. 28, 2001
Applicant:
Inventor:

Willem Gerard Ophey, Eindhoven, NL;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/714 ; G02F 1/1335 ;
U.S. Cl.
CPC ...
G02B 2/714 ; G02F 1/1335 ;
Abstract

The invention relates to a head-mounted display provided with an image display device and an optical system. The optical system comprises a first &lgr;/4 plate, a semi-transmissive mirror, a second &lgr;/4 plate and a polarization-dependent mirror, disposed in the described order from the incident side, for projecting an image to be formed by the image display device on a user's retina.


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Ophey, Willem. (2002). Head-mounted display (U.S. Patent No. 6421183). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6421183

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