CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01)] | 8 Claims |
1. An optical system, comprising:
a first lens;
a second lens comprising a negative refractive power;
a third lens of the lenses comprising a concave object-side surface;
a fourth lens comprising a negative refractive power and a convex image-side surface;
a fifth lens comprising a negative refractive power, an image-side surface including an inflection point, and a concave object-side surface; and
a sixth lens comprising a convex object-side surface,
wherein the fourth and the fifth lenses comprise a same refractive index,
wherein the first to sixth lenses are sequentially disposed from an object side to an image side,
wherein a radius of curvature of an image-side surface of the sixth lens is greater than a radius of curvature of the object-side surface of the sixth lens, and
wherein the optical system has a total number of six lenses with refractive power.
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