Optical scanning device and image forming apparatus

Details Optical scanning device and image forming apparatus Optical scanning device and image forming apparatus

2011-08-16

2011-08-16

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

Reexamination Certificate

active

07999985

ABSTRACT:
A light beam splitting element that is arranged on an optical path of a light beam emitted from a VCSEL element splits an incident light beam into a first light beam and a second light beam. An optical system focuses the first light beam on the scanning surface and moves an optical spot formed by a focused light beam on the scanning surface in the main scanning direction. A light receiving element that is mounted on a circuit board receives the second light beam. A dust-proof member bridges a space between the circuit board and a circuit-board holding member that holds the circuit board and surrounds the light receiving element.

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