Cascade scanning optical system

Details Cascade scanning optical system Cascade scanning optical system

1997-09-04

1998-10-27

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359204, 359210, 359216, 347233, G02B 2608

Patent

active

058284796

ABSTRACT:
A cascade scanning optical system which includes: a pair of laser scanning optical systems each having a laser beam emitter and a laser beam deflector, wherein a laser beam emitted by the laser beam emitter enters the laser beam deflector so that the laser beam deflector deflects the laser beam to scan a surface of a member such that the laser beams proceed to the surface on a common line thereon in respective ranges of the common line; a pair of mirrors respectively provided in the pair of laser scanning optical systems, each of the pair of mirrors being positioned in a corresponding optical path between the laser beam deflector and the member to reflect a laser beam incident thereon toward the surface; a pair of cylindrical lenses having power in a sub-scanning direction, respectively provided in the pair of laser scanning optical systems, each of the pair of cylindrical lenses being positioned in a corresponding optical path between the laser beam emitter and the laser beam deflector; first means for adjusting an angle of at least one of the pair of mirrors relative to the surface; and second means for adjusting a position of at least one of the pair of cylindrical lenses relative to a corresponding one of the laser beam deflectors.

REFERENCES:
patent: 5461414 (1995-10-01), Honda et al.
An English Language excerpt from Konica Technical Report, vol. 9, (1996).
A Japanese Language excerpt from Konica Technical Report, vol. 9, (1996).

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