Optical scanning system using a laser diode array

Details Optical scanning system using a laser diode array Optical scanning system using a laser diode array

1988-12-06

1990-06-12

Arnold, Bruce Y.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

350 61, 350469, 2505781, G02B 2610

Patent

active

049327348

ABSTRACT:
An optical scanning system using a laser diode array includes a collimator lens, a first imaging optical system being afocal in a deflection plane for imaging a plurality of beams from the collimator lens into respective lines in a plane perpendicular to the deflection plane, a deflector having a deflection/reflection surface, for deflecting beams from the first imaging optical system, and a second imaging optical system for focusing beams from the deflector on a scanned surface. The first imaging optical system includes, in the following order from the side of the collimator lens toward the deflector, a first spherical lens having a positive refracting power, a first cylindrical lens having a positive refracting power in the plane perpendicular to the deflection plane and a lens surface having a curvature opposite to the collimator lens, a second cylindrical lens having a negative refracting power in the plane perpendicular to the deflection plane and a lens surface having a curvature opposite to the collimator lens, and a second spherical lens having a positive refracting power.

REFERENCES:
patent: 4253724 (1981-03-01), Minoura et al.
patent: 4850663 (1989-07-01), Yamamoto et al.

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