Imaging lens

Details Imaging lens Imaging lens

2011-08-09

2011-08-09

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

Reexamination Certificate

active

07995294

ABSTRACT:
It is to provide an imaging lens that can improve optical performance while reducing size and weight.An imaging lens includes, in order from an object side to an image surface side, a diaphragm, a first lens3that is a meniscus lens having a positive power whose convex surface faces the object side, and a second lens4that is a lens having a negative power whose concave surface faces the object side, wherein conditions expressed by the following expressions are to be satisfied: 0.25<r1/r2≦0.45, 0.35≦r1/FL≦0.42, and 0.85≦f1/FL≦1 (where, r1: center radius curvature of the object side face of the first lens, r2: center radius curvature of the image surface side face of the first lens, FL: focal distance of the entire lens system, and f1: focal distance of the first lens).

REFERENCES:
patent: 7158319 (2007-01-01), Saito
patent: 2004-170460 (2004-06-01), None
patent: 2004-177628 (2004-06-01), None
patent: 2004-252067 (2004-09-01), None
patent: 4071817 (2008-01-01), None
patent: 4064434 (2008-03-01), None
patent: 4074203 (2008-04-01), None

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