CPC G02B 9/62 (2013.01) [G02B 9/60 (2013.01); G02B 13/0045 (2013.01)] | 10 Claims |
1. An optical imaging system, comprising:
a first lens comprising positive refractive power and a concave image-side surface;
a second lens comprising positive refractive power;
a third lens comprising negative refractive power and a convex object-side surface;
a fourth lens comprising a refractive power;
a fifth lens comprising a refractive power;
a sixth lens comprising negative refractive power, a convex object-side surface, and an inflection point formed on an image-side surface of the sixth lens,
wherein the first to sixth lenses are sequentially disposed from an object side toward an imaging plane,
wherein the fourth lens has a concave object-side surface or the fifth lens has a concave image-side surface,
wherein a thickness of the first lens is greater than a thickness of the second lens,
wherein a distance from the image-side surface of the first lens to an object-side surface of the second lens is greater than a distance from the image-side surface of the fifth lens to the object-side surface of the sixth lens, and
wherein a radius of curvature of an object-side of the third lens is greater than a radius of curvature of an object-side of the second lens.
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