Photographic lens

Details Photographic lens Photographic lens

2007-11-09

2009-12-15

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S771000, C359S772000, C359S715000

Reexamination Certificate

active

07633690

ABSTRACT:
A photographic lens comprising a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens having a negative refractive power, wherein the lenses are numbered in order of location from the object, and wherein a surface of the fourth lens toward the object is an aspheric surface having an inflection point.

REFERENCES:
patent: 6917479 (2005-07-01), Park
patent: 7408723 (2008-08-01), Lin
patent: 7443611 (2008-10-01), Shinohara
patent: 7453654 (2008-11-01), Shinohara
patent: 2002-228922 (2002-08-01), None
patent: 2002-365529 (2002-12-01), None
patent: 2002-365530 (2002-12-01), None
patent: 2002-365531 (2002-12-01), None
patent: 2003-322792 (2003-11-01), None
patent: 2004-163849 (2004-06-01), None
patent: 2004-212467 (2004-07-01), None
patent: 2004-240074 (2004-08-01), None
patent: 2004-326097 (2004-11-01), None
patent: 2004-341501 (2004-12-01), None
patent: 2004-341512 (2004-12-01), None
patent: 2005-284153 (2005-10-01), None
patent: 2006-317916 (2006-11-01), None
patent: 2007-011237 (2007-01-01), None
patent: 10-0703469 (2007-04-01), None

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