Variable magnification optics for an image forming apparatus

Details Variable magnification optics for an image forming apparatus Variable magnification optics for an image forming apparatus

1989-11-09

1991-10-15

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 60, G03B 2734, G03B 2740, G03B 2770

Patent

active

050578634

ABSTRACT:
Variable magnification optics for an image forming apparatus has a plurality of optical members, especially a first mirror and a lens located at the rear of the mirror, which are movable in association with each other and over a minimum of distance. This reduces the exclusive space which the optics occupies in the apparatus and, therefore, the overall dimensions of the apparatus. The mirror and lens which are interlocked with each other do not need independent drive lines, whereby the overall dimensions of the apparatus are further reduced.

REFERENCES:
patent: 3901586 (1975-08-01), Suzuki et al.
patent: 4453824 (1984-06-01), Miyake et al.
patent: 4572658 (1986-02-01), Suzuki et al.
patent: 4647191 (1987-03-01), Kunikawa et al.
patent: 4766466 (1988-08-01), Kawai et al.
patent: 4800414 (1989-01-01), Takeda

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