Optical scanning lens, optical scanning and imaging system and o

Details Optical scanning lens, optical scanning and imaging system and o Optical scanning lens, optical scanning and imaging system and o

1998-04-15

2000-06-27

Epps, Georgia

Optical: systems and elements

Collimating of light beam

369112, 369116, G02B 2730, G11B 700

Patent

active

060813865

ABSTRACT:
An optical scanning lens and an optical scanning and imaging system for use in an optical scanning apparatus for scanning a surface of an optical recording medium, such as a photosensitive material, for writing data thereupon, is constructed to produce a minimum beam spot diameter, in a sub-scanning direction, within a desired range, while also reducing variation in a scanning line pitch and reducing variation in beam spot diameter according to an image height for every point along a scanning surface by determining and compensating for a non-uniform distribution of refractive indices in an optical scanning lens used in the optical scanning imaging system, before designing and manufacturing the optical scanning lens.

REFERENCES:
patent: 5117309 (1992-05-01), Aoki

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