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:
Feb. 11, 2003
Filed:
Jun. 13, 2001
Takeshi Endo, Osaka, JP;
Yasushi Kobayashi, Itami, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A head-mounted display device and an eyepiece optical system suitable for use in the head-mounted display device is provided. The eyepiece optical system is capable of enlarging and displaying, to an eye of an observer, an image displayed on a two-dimensional display element. The eyepiece optical system includes, sequentially from the observer's eye, an aspherical resin lens, a spherical glass lens, and a polarization-conversion element disposed between the spherical glass lens and the two-dimensional display element. On a surface of the aspherical resin lens is provided a circularly-polarized-light-selective reflecting-transmitting surface for selectively reflecting and transmitting projection image light from the two-dimensional display element, depending on a rotation direction of circularly-polarized rays of the projection image light.