US 2010/0165434 A1 · LIGHT SCANNING UNIT

Abstract

Disclosed is a light scanning unit that includes an imaging optical system disposed between a beam deflector and a surface to be scanned. The imaging optical system includes two adjacent imaging optical devices that are inclined with respect to the light path. The inclination directions of the two adjacent imaging optical devices may be determined according to the number of reflection units that are disposed on the light path between the two adjacent imaging optical devices. The disclosed light scanning unit of the above configuration may advantageously exhibit reduced ghost images, reduced bowing of the scan line, improved beam diameter uniformity, and/or improved color registration.

Claims20

Dependent claims

A light scanning unit, comprising:

a light source configured to emit a light beam;
a light deflector configured to deflect the light beam;
and
an imaging optical system configured to form an image of the deflected light beam on a surface to be scanned, the imaging optical system comprising at least two imaging optical devices that are disposed on a light path between the light deflector and the surface to be scanned,
wherein two adjacent imaging optical devices from among the at least two imaging optical devices are inclined with respect to the light path, and
wherein the inclination directions of the two adjacent imaging optical devices are determined according to the number of reflection units that are disposed on the light path between the two adjacent imaging optical devices.

3 more elements

Dependencies are inferred from the claim text.

Light scanning unit

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Light scanning unit

Life of this patent

Abstract

Claims20