Complex lens for a tandem scanning optical system and a...

Details Complex lens for a tandem scanning optical system and a... Complex lens for a tandem scanning optical system and a...

2006-07-11

2006-07-11

Cherry, Euncha P. (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

Reexamination Certificate

active

07075691

ABSTRACT:
A complex lens for a tandem scanning optical system converges a plurality of light beams, which are modulated independently and deflected by a deflector, onto a surface to be scanned, and forms a plurality of scanning lines at the same time. The complex lens includes a plurality of stacked lens portions that are molded as a single-piece element. Thus a plurality of lens surfaces of the lens portions at an incident side are formed by a single-piece mirror surface core and a plurality of lens surfaces of the lens portions at an exit side are formed by another single-piece mirror surface core during the molding process.

REFERENCES:
patent: 4962983 (1990-10-01), Watanabe
patent: 4999142 (1991-03-01), Fukushima et al.
patent: 6392772 (2002-05-01), Hama et al.
patent: 6555810 (2003-04-01), Suhara
patent: 6790389 (2004-09-01), Koreeda et al.

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