Patent ID: 7457054

Claim:
An imaging lens used for forming an image of an object on an image-taking surface of a solid image pickup device, comprising: in order from an object side towards an image surface side, a diaphragm, a first lens which is a meniscus lens having a positive power whose convex surface faces said object side, and a second lens which is a lens having a positive power whose convex surface faces said image surface side, wherein conditions expressed by each of following expressions (1)-(6) are to be satisfied; 1.25 ≧L/fl≧ 0.8 (1) 0.2 >f 1 /f 2 >0 (2) 1.5 ≧f 1 /fl≧ 0.9 (3) 1 ≧d 2 /d 1 ≧0.2 (4) 0.35 ≧d 1 /fl≧ 0.1 (5) 0.27 ≧d 3 /fl≧ 0.1 (6) where, L: entire length of said imaging lens fl: focal distance of entire imaging lens f 1 : focal distance of said first lens f 2 : focal distance of said second lens d 1 : center thickness of said first lens d 2 : space between said first lens and said second lens on an optical axis d 3 : center thickness of said second lens.