Camera optical lens

Patent metadata

Field	Value
Publication number	US-2020209525-A1
Application number	US-201916705157-A
Country	US
Kind code	A1
Filing date	Dec 5, 2019
Priority date	Dec 31, 2018
Publication date	Jul 2, 2020
Grant date	—

Abstract

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens satisfies following conditions: 62.00<R7/f4<70.00; 0.10<R1/R2<0.40; and −0.50<R3/R4<−0.30, where f4 denotes a focal length of the fourth lens; R1 denotes a curvature radius of an object side surface of the first lens; R2 denotes a curvature radius of an image side surface of the first lens; R3 denotes a curvature radius of an object side surface of the second lens; R4 denotes a curvature radius of an image side surface of the second lens; and R7 denotes a curvature radius of an object side surface of the fourth lens.

First claim

What is claimed is:

1 . A camera optical lens, comprising, from an object side to an image side:
an aperture; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; and a fourth lens having a negative refractive power, wherein the camera optical lens satisfies following conditions:
62.00< R 7/ f 4<70.00;
0.10< R 1/ R 2<0.40;
and
−0.50< R 3/ R 4<-0.30,

where f4 denotes a focal length of the fourth lens; R1 denotes a curvature radius of an object side surface of the first lens; R2 denotes a curvature radius of an image side surface of the first lens; R3 denotes a curvature radius of an object side surface of the second lens; R4 denotes a curvature radius of an image side surface of the second lens; and R7 denotes a curvature radius of an object side surface of the fourth lens.

2 . The camera optical lens as described in claim 1 , further satisfying a following condition:
10.00< R 5/ R 6<30.00, where R5 denotes a curvature radius of an object side surface of the third lens; and R6 denotes a curvature radius of an image side surface of the third lens.

3 . The camera optical lens as described in claim 1 , further satisfying a following condition:
0.60< d 5/ f 3<0.68, where f3 denotes a focal length of the third lens; and d5 denotes an on-axis thickness of the third lens.

Assignees

• Aac Optics Solutions Pte Ltd

Inventors

• Zhao Xiaonan
• Teraoka Hiroyuki

Classifications

• G02B13/004 Primary

  having four lenses · CPC title

• G02B9/34 Primary

  having four components only · CPC title

• G02B27/0012

  Optical design, e.g. procedures, algorithms, optimisation routines · CPC title