Patent ID: 9405099
Filing Date: 2016-08-02
CPC Classification: G02B,H04N

Claim Text:
1. A subminiature optical system, comprising: sequentially from an object side, a first lens having positive refractive power and having a meniscus shape of which an object-side surface is convex; a second lens having negative refractive power, both surfaces thereof being concave; a third lens of which an object-side surface is convex and having positive refractive power; a fourth lens concave toward the image plane and having negative refractive power; and a fifth lens having negative or positive refractive power, of which an object-side surface is concave, wherein the fifth lens has at least one inflection point formed in a location thereof other than a location corresponding to an optical axis, and wherein the optical system satisfies the following Conditional Equation 1, where TTL indicates a distance from an object side surface of the first lens to the image plane, and F indicates the focal distance of the optical system.