Scanning optical system

Details Scanning optical system Scanning optical system

1997-12-24

2000-09-26

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359207, 359565, G02B 2608

Patent

active

061249629

ABSTRACT:
Disclosed is a scanning optical system, which is provided with a light source, a deflector, which deflects a beam emitted from said light source, and a scanning lens for converging the beam deflected by said deflector onto a surface to be scanned. The scanning lens has a positive power as a whole, and includes a plurality of refraction lens elements. Further, a diffraction lens structure is formed on at least one surface of one of the plurality of lens elements. Combination of the refraction lens elements and the diffraction lens structure compensates a lateral chromatic aberration caused by the refraction lens elements.

REFERENCES:
patent: 5208701 (1993-05-01), Maeda
patent: 5646767 (1997-07-01), Iima et al.
patent: 5838480 (1998-11-01), MacIntyre et al.
"Diffractive Optics at Eastman Kodak Company," SPIE, vol. 2689, pp. 228-254, Aug. 1996.

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