Scanner/plotter optical system

Details Scanner/plotter optical system Scanner/plotter optical system

1982-06-03

1985-05-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 66, H01J 516

Patent

active

045160236

ABSTRACT:
A laser beam scanner with encoder and a laser beam plotter with encoder are disclosed. The scanner provides for unsharp masking by alternating between a large scan beam and a small scan beam on alternate scans. Compensation for non-straight scan lines is achieved through a small linear galvonometer placed in the scanning optics. An equal conjugate optical system is utilized to allow encoder information to be obtained from a stationary image of the main scanning and plotting galvonometer mirror.

REFERENCES:
patent: 4352984 (1982-10-01), Ohara
patent: 4408826 (1983-10-01), Ike

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