IMAGE PICKUP LENS

摘要

PROBLEM TO BE SOLVED: To provide a bright, compact and inexpensive image pickup lens system which is adaptable to an angle of view being about 30°, in which the incident angle on an image pickup device is made small, especially whose entire length is short and whose aberration is excellently corrected. SOLUTION: The image pickup lens is constituted of an aperture diaphragm, a 1st lens being a meniscus lens whose surface on an object side is convex, and a 2nd lens being a meniscus lens whose surface on the object side is convex and whose both surfaces are aspherical from the object side. When it is assumed that the focal distance of the entire system is (f), the focal distance of the 2nd lens is f2, the paraxial radius of curvature of the image surface side of the 1st lens is R2 and the paraxial radius of curvature of the surface on the object side of the 2nd lens is R3, the lens satisfies conditions; 0.2