Camera optical lens
AssigneeAAC Optics Solutions Pte. Ltd.
InventorsXuqi Bian, Minyi Xu, Hiroyuki Teraoka
Life of this patent
Estimating the term…
Abstract
Provided is a camera optical lens including, sequentially from an object side to an image side: 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. The camera optical lens satisfies following conditions: 2.00≤(f1+f3)/f≤2.30; −8.60≤(f2+f4)/f≤−4.80; −2.10≤(R1+R2)/(R1−R2)≤−1.90; −4.00≤(R3+R4)/(R3−R4)≤−1.00; and 2.00≤(R7+R8)/(R7−R8)≤3.40. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.
Claims10
A camera optical lens, comprising, sequentially from an object side to an image side:
- 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:
- 2.00≤(f1+f3)/f≤2.30;
- −8.60≤(f2+f4)/f≤−4.80;
- −2.10≤(R1+R2)/(R1−R2)≤−1.90;
- −4.00≤(R3+R4)/(R3−R4)≤−1.00;
- and
- 2.00≤(R7+R8)/(R7−R8)≤30.40,
- where
- f denotes a focal length of the camera optical lens;
- f1 denotes a focal length of the first lens;
- f2 denotes a focal length of the second lens;
- f3 denotes a focal length of the third lens;
- 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;
- R7 denotes a curvature radius of an object side surface of the fourth lens;
- and
- R8 denotes a curvature radius of an image side surface of the fourth lens.
Dependencies are inferred from the claim text.