Optical system having reflecting surface of non-rotationally symmetric surface configuration
First Claim
1. An optical system disposed between a pupil plane and an image plane, said optical system comprising only one reflecting surface that gives a converging action to a bundle of light rays and has a curved surface configuration,wherein said curved surface configuration of said reflecting surface is formed from a non-rotationally symmetric surface having only one plane of symmetry in a plane (YZ-plane) containing both a center of said pupil plane and a center of said image plane.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical system for use, for example, in a head-mounted image display apparatus, which provides an observation image that is clear and has minimal distortion even at a wide field angle. The head-mounted image display apparatus has an image display device (6), and an optical system (9) that leads an image formed by the image display device (6) to an observer'"'"'s eyeball position (1), without forming an intermediate image, so that the image can be observed as a virtual image. The optical system (9) includes a reflecting surface (4) performing only one reflection, and one or two transmitting surfaces (3). The space between the reflecting surface (4) and the transmitting surfaces (3) is filled with a medium having a refractive index larger than 1. At least the reflecting surface (4) is a non-rotationally symmetric surface configuration having no axis of rotational symmetry in nor out of the surface.
43 Citations
29 Claims
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1. An optical system disposed between a pupil plane and an image plane, said optical system comprising only one reflecting surface that gives a converging action to a bundle of light rays and has a curved surface configuration,
wherein said curved surface configuration of said reflecting surface is formed from a non-rotationally symmetric surface having only one plane of symmetry in a plane (YZ-plane) containing both a center of said pupil plane and a center of said image plane.
Specification