Scanning optical apparatus

Details Scanning optical apparatus Scanning optical apparatus

1997-08-27

2000-07-25

Schuberg, Darren E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359207, 359570, 359566, 347258, G02B 2608

Patent

active

06094286&

ABSTRACT:
A scanning optical apparatus includes a semiconductor laser as a light source, a deflector for deflecting a light beam emitted from the semiconductor laser, and optical element for directing the light beam emitted from the semiconductor laser to a surface to be scanned. The optical element includes a refracting porion and a diffracting portion, wherein changes in the focus in the main scanning direction, resulting from the environmental fluctuations, of the scanning optical apparatus are corrected by a characteristic of the optical element.

REFERENCES:
patent: 5208701 (1993-05-01), Maeda
patent: 5212501 (1993-05-01), Nakamura et al.
patent: 5410563 (1995-04-01), Nakamura et al.
patent: 5486694 (1996-01-01), Harris
patent: 5838480 (1998-11-01), McIntyre et al.

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