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:
Sep. 21, 2004
Filed:
Apr. 26, 2000
Olympus Corporation, Tokyo, JP;
Abstract
The present invention relates to an image display apparatus, e.g. a head-mounted image display apparatus, in which an image from a single image display device is led to two eyes without using a half-mirror, thereby allowing observation of a bright image. The image display apparatus has an optical path distributing mirror for distributing the image of a single display device to an optical path for a right eye and an optical path for a left eye, and an ocular prism R for the right eye and an ocular prism L for the left eye, which are placed on the right- and left-hand sides, respectively, of the optical path distributing mirror . In the optical path for the right eye, display light from the display device is reflected by a reflecting surface R of the optical path distributing mirror and passes through a first surface R of the decentered prism member R to enter the prism, in which the light is totally reflected by a second surface R, which serves also as a fourth surface R, and back-reflected by a third surface R to exit from the prism through the fourth surface R. The light is led to an exit pupil R for the right eye to project an enlarged image of the display device into the right eye. The same is true in the optical path for the left eye.