Laser scanning device

Details Laser scanning device Laser scanning device

1996-11-06

1999-05-04

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359205, 359208, 359216, 359217, G02B 2608

Patent

active

059009640

ABSTRACT:
A scanning optical system for scanning an object surface includes a light emitting device for emitting a beam of light and a deflection mirror rotatable to deflect the beam emitted by the light emitting device, and to scan within a predetermined scanning angle zone along a main scanning plane. The beam incident to the deflection mirror is inclined in a direction of an auxiliary scanning, a direction of incidence of the beam onto the deflection mirror intersects a rotational axis of said deflection mirror, and the direction of the beam is orthogonal to a reflection surface of the deflection mirror, when viewed in the main scanning plane as the beam reaches the center of the predetermined scanning angle zone. A curved mirror having power at least in the main scanning plane, and a toric lens positioned between the curved mirror and the object surface and having power at least in the auxiliary scanning direction are also provided.

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