Optical system

Optical: systems and elements – Lens

Reexamination Certificate

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Details

C359S649000, C359S652000, C359S653000, C359S654000

Reexamination Certificate

active

07426079

ABSTRACT:
At least one exemplary embodiment is directed to A retro focus optical system that is capable of sufficiently correcting and/or reducing various aberrations including the chromatic aberration. The optical system includes a refractive optical element including a solid material. The Abbe number νd and the partial dispersion ratio θgF of the solid material along with a shape of the refractive optical element can reduce various aberrations.

REFERENCES:
patent: 4515446 (1985-05-01), Takahashi et al.
patent: 5638215 (1997-06-01), Neil
patent: 5731907 (1998-03-01), Sigler
patent: 6317268 (2001-11-01), Harrigan
patent: 6496310 (2002-12-01), Fujimoto
patent: 7057831 (2006-06-01), Ogawa
patent: 2002/0122264 (2002-09-01), Ogawa
patent: 6-82689 (1994-03-01), None
patent: 2000-147373 (2000-05-01), None
patent: 2002-156582 (2002-05-01), None
patent: 2002-287031 (2002-10-01), None

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