Light beam scanning system

Details Light beam scanning system Light beam scanning system

1979-10-12

1981-08-04

Corbin, John K.

G02B 2100

Patent

active

042818893

ABSTRACT:
A light beam scanning system in which deviations perpendicular to the scanning direction of the scan line due to parallelism deviations of a rotary multi-surfaced mirror are eliminated. A first linear image pattern is formed on the reflecting surface of the mirror parallel to the scanning direction by a connex cylindrical lens. The image is reflected to a first convergent lens which forms a second linear image perpendicular to the scanning direction then passes through a concave cylindrical lens which diverges the light in a direction perpendicular to the scanning direction. A second convergent lens converges the beam to form a point image on the scanned surface.

REFERENCES:
patent: 3623789 (1971-11-01), Kawaszu
patent: 3865465 (1975-02-01), Tutuoka et al.
patent: 3972582 (1976-08-01), Oosaka et al.
patent: 4054361 (1977-10-01), Noguchi
patent: 4073566 (1978-02-01), Noguchi
patent: 4121883 (1978-10-01), Goshima et al.
patent: 4123135 (1978-10-01), Rabedeau

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