CPC G02B 9/62 (2013.01) [G02B 9/04 (2013.01); G02B 9/60 (2013.01); G02B 13/0045 (2013.01); H04M 1/0264 (2013.01)] | 16 Claims |
1. An optical imaging system, comprising:
a first lens comprising positive refractive power;
a second lens comprising negative refractive power;
a third lens comprising negative refractive power;
a fourth lens comprising a refractive power;
a fifth lens comprising negative refractive power; and
a sixth lens comprising a refractive power and a convex image-side surface,
wherein the first lens to the sixth lens are sequentially disposed from the object side to an imaging plane,
wherein an expression 0.7<TL/f<1.0 is satisfied, where TL represents a distance from an object-side surface of the first lens to the imaging plane and f represents an overall focal length of the optical imaging system, and
wherein a radius of curvature of an object-side surface of the third lens is greater than a radius of curvature of an image-side surface of the sixth lens.
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