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. 28, 2017
Filed:
Jul. 23, 2013
Nikon Corporation, Chiyoda-ku, Tokyo, JP;
Kenzaburo Suzuki, Yokohama, JP;
Nikon Corporation, Tokyo, JP;
Abstract
Provided is a head-mounted display optical system (LS) having: an optical deflection element (M); a first lens group (G); a second lens group (G); and an optical reflection element (M). The head-mounted display optical system is configured such that light from a light source, which is reflected on a reflection surface (M) of the optical reflection element (M) and reaches a drawing surface (I) assumed to be located on a retina when a user wears the head-mounted display, moves on the drawing surface (I) according to the change of a travelling direction of the light caused by the optical deflection element (M), and an image is drawn on the drawing surface (I). The first lens group (G) includes a free-shaped surface lens having a free-shaped surface which is rotationally asymmetrical with respect to a reference axis, and the reflection surface (M) of the optical reflection element (M) is formed to be rotationally asymmetrical with respect to a reference axis.