CPC G02B 9/64 (2013.01) [G02B 13/0045 (2013.01); G02B 13/06 (2013.01); G02B 27/0025 (2013.01); H04N 23/55 (2023.01)] | 5 Claims |
1. An imaging lens forming an image of an object on an image sensor and comprising, in order from an object side to an image side,
a first lens having negative refractive power,
a second lens having negative refractive power,
a third lens having positive refractive power,
a fourth lens,
a fifth lens,
a sixth lens,
a seventh lens, and
an eighth lens having negative refractive power,
wherein said second lens has a convex object-side surface on a paraxial region,
said eighth lens has an aspheric image-side surface having at least one inflection point,
said eighth lens has a meniscus shape comprising a concave image-side surface on a paraxial region, and
the following conditional expression is satisfied:
0.1<R8r/f<0.6
where
f: a focal length of the overall optical system of the imaging lens, and
R8r: a curvature radius of an image-side surface of the eighth lens.
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