Optical deflector device for deflecting laser beam

Details Optical deflector device for deflecting laser beam Optical deflector device for deflecting laser beam

1990-12-04

1993-08-24

Ben, Loha

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359219, 250236, G02B 2608

Patent

active

052394034

ABSTRACT:
An optical deflector is employed in an optical unit incorporated in a laser beam printer. The optical deflector reflects a laser beam, which is generated by a laser diode toward a photosensitive body and is made to have a cross section of desirable size by a group of conversion lenses. The optical deflector is provided with reflecting surfaces whose cross sections are convex in a main scanning direction. The number of reflecting surfaces is defined by 4.times.m (m: a natural number), and therefore the optical deflector has four or eight reflecting surfaces, for instance. Since the number of reflecting surfaces is defined by 4.times.m, reflecting surfaces can be positioned easily and reliably with reference to the center of the shaft.

REFERENCES:
patent: 4101365 (1978-07-01), Fisli
patent: 4357071 (1982-11-01), Mankel et al.
patent: 4560862 (1985-12-01), Eastman et al.
patent: 4624528 (1986-11-01), Brueggemann
patent: 4643518 (1987-02-01), Taniguchi
patent: 4820911 (1989-04-01), Arackellian et al.
patent: 4875748 (1989-10-01), Matsumoto et al.

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