Patent ID: 9746642
Date: 2017-08-29
CPC Classifications: G02B

Claim:
1. A plurality of photographing lenses sequentially arranged in a direction from an object side to an image side, comprising: a first lens closest to the object side having a positive refractive power and a convex object-side surface; a second lens having a negative refractive power and a flat surface facing an object side or an image side; a third lens having a predetermined refractive power; a fourth lens having a negative refractive power and a meniscus shape concave toward the object side; and a fifth lens furthest from the object side which is concave toward the image side in a region around an optical axis of the photographing lenses, wherein the first lens through the fifth lens are sequentially arranged in a direction from the object side to the image side, and the arrangement of photographing lenses satisfies the following formulas: wherein V1 denotes an Abbe number of the first lens, V2 denotes an Abbe number of the second lens, F denotes a focal length of the photographing lenses, and F4 denotes a focal length of the fourth lens.