Optical scanner having variable power function and system using

Details Optical scanner having variable power function and system using Optical scanner having variable power function and system using

1992-11-23

1993-08-10

Gellner, Michael L.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346107R, 346160, 359212, G01D 942

Patent

active

052353494

ABSTRACT:
An optical device includes a scanning means, a first image-formation optical system, and a second image-formation optical system. A system for a device, such as the one in which images are formed by scanning with this optical device. The scanning means scans a light beam emitted from a light source. The first image-formation optical system forms the light beam, scanned by the scanning means, into an image in a first spot diameter with respect to the scanning direction, on a surface to be scanned. The second image-formation optical system utilizes the first image-formation optical system and at least part of an optical system for forming the light beam scanned, by the scanning means, into an image in a second spot diameter which is different from the first spot diameter, with respect to the scanning direction, on the surface to be scanned. The first image-formation optical system scans the surface to be scanned within a first scanning range, whereas the second image-formation optical system scans the surface to be scanned within a second scanning range which is different from the first scanning range.

REFERENCES:
patent: 4318582 (1982-03-01), Minoura et al.
patent: 4539478 (1985-09-01), Sano
patent: 4561717 (1985-12-01), Kataoka et al.
patent: 4633272 (1986-12-01), Hardy
patent: 4651170 (1987-03-01), Chandler et al.
patent: 5068677 (1991-11-01), Matsuura et al.

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