Patent ID: 9720211
Date: 2017-08-01
CPC Classifications: G02B

Claim:
1. A fixed-focus imaging lens composed of seven lenses to form an image of an object on a solid-state image sensor, comprising, in order from an object side to an image side of the imaging lens: a first lens having a convex surface facing the object side near an optical axis of the imaging lens; a second lens having an aspheric surface; a third lens having an aspheric surface; a fourth lens having an aspheric surface; a fifth lens having an aspheric surface; a sixth lens that is a double-sided aspheric lens having a concave surface facing the image side near the optical axis; and a seventh lens that is a double-sided aspheric lens having a concave surface facing the image side near the optical axis, wherein none of the lenses has a lens surface that contacts an adjacent lens.