Patent ID: 6853504

Claim:
A camera lens system for image pickup devices, comprising: a first group lens having a convex, aspheric surface facing an object; a second group lens on which a light beam is incident from the first group lens and which is formed in an aspheric shape; an iris disposed at a side of the first group lens close to the object; a filter disposed at a side of the second group lens close to an image of the object; and an image sensor for converting the image formed through the first and second group lenses into an electrical signal, wherein the camera lens system satisfies the following conditions, 4.7≦f 1 ≦4.9 (1) 23≦f 2 ≦24 (2) 3.8≦f≦4.0 (3) where f 1 is a focal length (mm) of the first group lens, f 2 is a focal length (mm) of the second group lens, and f is an overall focal length (mm) of the camera lens system.