Patent ID: 9465193
Filing Date: 2016-10-11
CPC Classification: G02B

Claim Text:
1. An imaging lens system comprising: a first lens having a positive refractive power and an object side lens surface that is convex toward an object side; a second lens having a negative refractive power and a meniscus shape that is concave toward an image side; a third lens having a positive refractive power; a fourth lens having a negative refractive power and a meniscus shape that is concave toward the object side; and a fifth lens having a negative refractive power and a meniscus shape that is concave toward the image side near an optical axis, wherein the first to fifth lenses are sequentially disposed from the object side to an image side, and the imaging lens system satisfies the conditions below: where f denotes a focal length of the imaging lens system, f34 denotes an effective focal length of the third lens and the fourth lens, and f5 denotes a focal length of the fifth lens f1 denotes a focal length of the first lens, and f2 denotes a focal length of the second lens.