Lens and optical pickup device

Details Lens and optical pickup device Lens and optical pickup device

2006-07-06

2009-06-30

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

Annular zonal correcting

Reexamination Certificate

active

07554751

ABSTRACT:
A lens is provided with a reflective annular zone face that is approximately perpendicular to the lens optical axis, and tilt of the reflective annular zone face is set to be equivalent to coma aberration resulting from the lens.

REFERENCES:
patent: 5013133 (1991-05-01), Buralli et al.
patent: 5151823 (1992-09-01), Chen
patent: 5589982 (1996-12-01), Faklis et al.
patent: 5796520 (1998-08-01), Maruyama
patent: 2003/0133478 (2003-07-01), Sidorin
patent: 2003-294915 (2003-10-01), None

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