Head-mounted image display apparatus

Details Head-mounted image display apparatus Head-mounted image display apparatus

1995-10-30

1998-06-16

Dzierzynski, Paul M.

Optical: systems and elements

Mirror

Plural mirrors or reflecting surfaces

359851, 359852, 359853, 359364, 359365, 359366, 359726, 359727, 359728, 359839, G02B 508, G02B 7182, G02B 510, G02B 1700

Patent

active

057680396

ABSTRACT:
A head-mounted image display apparatus (HMD) including an ocular optical system, which has an F-number of 1.5 to 3 and enables a flat and clear image to be observed at a view angle of up to 60.degree. or more with substantially no aberration. The HMD has at least two, surfaces and each having a concave surface directed toward the pupil. The two surfaces are disposed so that light rays from an image display device are reflected by the first surface, and the reflected light rays are reflected by the second surface and pass through the first surface to enter an observer's eyeball.

REFERENCES:
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patent: 4322135 (1982-03-01), Freeman
patent: 4429956 (1984-02-01), Herbert
patent: 4874214 (1989-10-01), Cheysson et al.
patent: 5452126 (1995-09-01), Johnson
Epstein et al., Projection Television, Jun. 1995, pp. 444-445.

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