Optical system having reflecting surface of non-rotationally sym

Details Optical system having reflecting surface of non-rotationally sym Optical system having reflecting surface of non-rotationally sym

1997-10-15

2000-08-01

Mack, Ricky

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359630, G02B 2714

Patent

active

060975423

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.

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