Wide angle lens system and camera

Details Wide angle lens system and camera Wide angle lens system and camera

2007-07-03

2007-07-03

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S781000, C359S771000, C359S753000

Reexamination Certificate

active

11360887

ABSTRACT:
There is provided a wide angle lens system configured to obtain excellent image forming performance even in a half field angle region of 40 degrees to 50 degrees. A wide angle lens system is constituted of a first lens having a negative refractive power, a light path bending member having no refractive power, a second lens having a positive refractive power, an aperture which adjusts a light amount, a first cemented lens formed by cementing a third lens having a positive refractive power and a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and an optically equivalent member which functions as a faceplate of an optical low-pass filter and a solid state imaging element.

REFERENCES:
patent: 6825993 (2004-11-01), Noda
patent: 6865026 (2005-03-01), Nozawa et al.
patent: 6985305 (2006-01-01), Takeuchi
patent: 2000-292692 (2000-10-01), None
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patent: 2003-302575 (2003-10-01), None
patent: 2004-53993 (2004-02-01), None
patent: 2004-061910 (2004-02-01), None
patent: 2005-107036 (2005-04-01), None

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