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. 22, 1998
Filed:
Jun. 01, 1995
Keiichi Kuba, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A compact, lightweight and wide-field head-mounted image display apparatus which is capable of projecting an image overflowing with a sence of immersion. The apparatus includes an LCD (1), a beam splitter prism (5) having a half-mirror (3) which is disposed at a tilt at an intersection between the optical axis of the LCD (1) and the observer's visual axis to lead an image ray bundle emanating from the LCD (1) to a pupil (4) of an observer's eyeball, and a concave mirror (2) which is provided on a surface of the prism (5) on the side thereof which is remote from the LCD (1). Thus, after entering the prism (5), the image displayed on the LCD (1) is successively reflected by the concave mirror (2) and the half-mirror (3) and then enters the eyeball (4). The effective apertures of the half-mirror (3), the concave mirror (2) and the beam splitter prism (5) are reduced, thereby making the image of the periphery of the image display device unsharp, and thus providing dynamic presence.