Image forming apparatus

Details Image forming apparatus Image forming apparatus

1997-05-30

1999-11-09

Dowling, William

Optics: image projectors

Lens support

Lens position adjustable

362277, G03B 2114

Patent

active

059800453

ABSTRACT:
An image forming apparatus includes an illuminating device for illuminating a projection image. The illuminating device includes a light source having of a collector-mirror-incorporated lamp, an adapter lens capable of being mounted in or dismounted out of an optical path, and a field lens capable of moving on the optical axis. A projection lens projects the projection image under illumination of the illuminating device onto a projection surface.

REFERENCES:
patent: 5046838 (1991-09-01), Iwasaki
patent: 5120125 (1992-06-01), Behr
patent: 5187509 (1993-02-01), Iwasaki
patent: 5467207 (1995-11-01), Forkner et al.
patent: 5479224 (1995-12-01), Yasugaki et al.
patent: 5515121 (1996-05-01), Fujibayashi
patent: 5645334 (1997-07-01), Tejima et al.

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