Optical pickup lens, molded optical component, handling...

Details Optical pickup lens, molded optical component, handling... Optical pickup lens, molded optical component, handling...

2006-03-14

2006-03-14

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

With support

C359S718000

Reexamination Certificate

active

07012767

ABSTRACT:
An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a projecting section integrally provided to the lens section. The objective lens satisfies the following conditional formulas:in-line-formulae description="In-line Formulae" end="lead"?0.5≦A≦2.0, 0.3A≦B≦1.7Ain-line-formulae description="In-line Formulae" end="tail"?where A is a diameter (mm) of the lens section when the lens section is viewed from an direction of an optical axis, and B is a width (mm) of the projecting section when the connecting section is viewed from the direction of the optical axis.

REFERENCES:
patent: 6055111 (2000-04-01), Nomura et al.
patent: 6078430 (2000-06-01), Fukuda et al.
patent: 6144500 (2000-11-01), Iwaki et al.
patent: 6765732 (2004-07-01), Yamamoto et al.
patent: 2003/0026007 (2003-02-01), Yamamoto et al.

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