Optical scanning device for scanning laser beam focused on image

Details Optical scanning device for scanning laser beam focused on image Optical scanning device for scanning laser beam focused on image

1993-04-16

1995-03-28

Ben, Loha

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359200, 359220, 347258, G02B 2610

Patent

active

054022584

ABSTRACT:
A laser beam emitted from the beam emitting unit is deflected for scanning by a reflector rotated by a scanner motor. The deflection scanning beam passes through a meniscus lens device provided close to the reflector, and converges the laser beam on an image-forming surface. The meniscus lens device has an incident surface, a radius of curvature of which is set smaller than that of an output surface thereof, with a convex surface thereof facing the image-forming surface. The laser beam emitting unit, the reflector, the scanner motor, and the meniscus lens device are all integrally built in a housing.

REFERENCES:
patent: 4367912 (1983-01-01), Kitamura
patent: 4877955 (1989-10-01), Ono
patent: 4943128 (1990-07-01), Takada et al.
patent: 4971410 (1990-11-01), Wike, Jr. et al.
patent: 5184245 (1993-02-01), Murakami et al.
Patent Abstracts of Japan, vol. 7, No. 127 (P-201) (1272), Jun. 3, 1983 & JP-A-58 046 317 (Canon), Mar. 17, 1983, Laser Scanning Optical System, Abstract only.

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