Patent ID: 9348112
Filing Date: 2016-05-24
CPC Classification: G02B

Claim Text:
1. An optical system comprising: a first lens having a positive refractive power and an object-side surface convex toward an object side; a second lens having a negative refractive power and an image-side surface concave toward an image side; a third lens having a negative refractive power; a fourth lens having a positive refractive power and an object-side surface convex toward an object side; a fifth lens having a positive refractive power of which an object-side surface is concave and an image-side surface is convex; and a sixth lens having a negative refractive power and an image-side surface concave toward the image side, wherein the optical system satisfies the following Conditional Expression with respect to conditions on aberration correction; where F3 is a focal length of the third lens, and F is a local length of the entire optical system.