Imaging device

Details Imaging device Imaging device

2006-09-27

2010-06-29

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

With light limiting or controlling means

C359S754000

Reexamination Certificate

active

07746569

ABSTRACT:
It is an object of the present invention to provide an imaging device that, even if the optical axis of the multifocal lens has a deviation resulting from its decentered surfaces, can prevent an image from being deteriorated by the low precision lens. The imaging device comprises a solid state image sensor for taking an image of an object to produce an image signal indicative of the image, an aspherical single focus lens, a bifocal lens disposed in front of the solid state image sensor, the bifocal lens having two focal distances, and an aperture diaphragm located just before the bifocal lens.

REFERENCES:
patent: 5392431 (1995-02-01), Pfisterer
patent: 5999327 (1999-12-01), Nagaoka
patent: 7126762 (2006-10-01), Yoshitsugu
patent: 08-320517 (1996-12-01), None
patent: 2002-123825 (2002-04-01), None
patent: 2003-270526 (2003-09-01), None

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