Beam scanning apparatus with sensor for detecting beam position

Details Beam scanning apparatus with sensor for detecting beam position Beam scanning apparatus with sensor for detecting beam position

1991-11-20

1992-12-22

Ben, Loha

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359218, 250235, 346108, G02B 2608

Patent

active

051737981

ABSTRACT:
A beam scanning apparatus comprises: a beam source for generating optical beam; a polygon mirror for deflecting the optical beam to scan a beam receiving surface; a beam receiving device, arranged at a position inequivalent to the beam receiving surface, for detecting the optical beam which is deflected by the polygon mirror; and an aspherical lens, arranged in front of the beam receiving device, for converging optical beam on the beam receiving device.

REFERENCES:
patent: 4657352 (1987-04-01), Suda et al.
patent: 4720632 (1988-01-01), Kaneko
patent: 4729645 (1988-03-01), Suda
patent: 4731623 (1988-03-01), Oda et al.
patent: 4765725 (1988-08-01), Suda
patent: 4978975 (1990-12-01), Saito
patent: 4978977 (1990-12-01), Ohmori et al.

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