Reflection type scanning optical system

Details Reflection type scanning optical system Reflection type scanning optical system

1998-07-07

2000-07-18

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359205, 359212, 359216, G02B 2608

Patent

active

060915331

ABSTRACT:
Disclosed is a scanning optical system, which is provided with a light source that emits a light beam, a deflector that deflects the light beam emitted by the light source to scan along a main scanning direction, and a single mirror that reflects the light beam deflected by the deflector towards a surface to be scanned. The single mirror is arranged such that the light beam deflected by the deflector and is incident on the single mirror and a light beam reflected by the single mirror forms a predetermined angle in the auxiliary scanning direction. Further, the single mirror is formed to have a positive power both in the main scanning direction and in the auxiliary scanning direction, and a shape of the single mirror is asymmetric in the auxiliary scanning direction with respect to a reference line which extends in the main scanning direction and intersects an optical axis thereof.

REFERENCES:
patent: 5353047 (1994-10-01), Nakamura et al.
patent: 5572353 (1996-11-01), Iizuka et al.
patent: 5583559 (1996-12-01), Nakamura et al.
patent: 5751464 (1998-05-01), Yoshikawa et al.
patent: 5812298 (1998-09-01), Ono

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