Patent ID: 6992841
Filing Date: 2006-01-31
Classification: G02B

Abstract:
1. An imaging lens system used for forming an image of an object on an image taking surface of a solid image sensor element, comprising a first lens made of a resin, which is a meniscus lens with its convex face turned toward the object side and having a positive power, a diaphragm, and a second lens made of a resin, which is a meniscus lens with its convex face turned toward an image surface side, said first lens, said diaphragm and said second lens being disposed sequentially in the named order from the side of the object toward the image surface, and wherein the following conditional expressions (4) to (9) are satisfied: wherein L is a distance of the entire length of the lens system (a distance from a surface of said first lens on the side of the object to the image taking surface (a length in air)); fl is a focal length of the entire lens system; f