Anamorphic lens

Details Anamorphic lens Anamorphic lens

2010-03-25

2011-11-01

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

Anamorphic

C359S715000

Reexamination Certificate

active

08049967

ABSTRACT:
Provided is a low-cost and compact super-wide-angle anamorphic lens having small number of lenses and exhibiting excellent lens performance when the lens is used for an onboard camera, capturing of an unwanted portion is minimized. The super-wide-angle anamorphic lens has an angle of view of 180° or more in the horizontal direction, and includes a first lens having a negative power, a second lens having a negative power, a third lens having a positive power, a fourth lens having a positive power in that order from an object side. One of the aforementioned third lens and fourth lens is provided with at least one non-rotationally symmetric aspherical surface.

REFERENCES:
patent: 7280289 (2007-10-01), Yamakawa
patent: 2007/0133107 (2007-06-01), Ohzawa et al.
patent: 2006-011093 (2006-01-01), None
patent: 2007-328030 (2007-12-01), None
patent: 2008-276185 (2008-11-01), None
patent: 2008-292800 (2008-12-01), None
patent: WO 2008/062661 (2008-05-01), None

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