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:
Nov. 04, 1997
Filed:
May. 15, 1995
Alfred P Hildebrand, Palo Alto, CA (US);
Gregory J Kintz, Mountain View, CA (US);
Siliscape, Inc., Palo Alto, CA (US);
Abstract
A compact, virtual image electronic display system is provided for forming a compound magnified virtual image of a source object. The display system includes a microdisplay for producing the source object, a first reflective magnification optic, and a second magnification optic which, in combination with the first magnification optic, forms a compound magnified virtual image. The first and second magnification optics may be separate optics. Alternatively, a single beamsplitting magnification optic may be used as both the first and second magnification optic. When a single beamsplitting magnification optic is employed, the beamsplitting magnification optic serves as both a first, reflective magnification optic to produce a magnified virtual image and as a second, transmissive magnification optic to produce a compound magnified virtual image which is seen by the observer. By using the same optic in a reflective mode as the first magnification optic and in a transmissive mode as the second magnification optic, any aberrations introduced into the image during the first stage of magnification are substantially removed during the second stage of magnification. As a result, the compound magnified virtual image produced is substantially aberration free.