Display apparatus

Details Display apparatus Display apparatus

2006-02-07

2006-02-07

Robinson, Mark A. (Department: 2872)

Optical: systems and elements

Mirror

Plural mirrors or reflecting surfaces

C353S099000, C348S744000

Reexamination Certificate

active

06994442

ABSTRACT:
It is an object of this invention to provide a high-quality, high-precision, large-screen display apparatus which can obtain a sufficient light beam reception angle with respect to an image display unit, improve imaging performance, and obtain a thin structure. There is provided a display apparatus for obliquely projecting light from an image display unit onto a projection optical system, wherein the projection optical system includes a plurality of aspherical curved mirrors and projects an image without distortion (1.2% or less).

REFERENCES:
patent: 4971436 (1990-11-01), Aoki et al.
patent: 5100222 (1992-03-01), Minoura et al.
patent: 5191472 (1993-03-01), Kurematsu et al.
patent: 5495306 (1996-02-01), Shibazaki
patent: 5871266 (1999-02-01), Negishi et al.
patent: 6255661 (2001-07-01), Braat
patent: WO 97/01787 (1997-01-01), None

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