Camera optical lens

Patent metadata

Field	Value
Publication number	US-11054610-B2
Application number	US-201815971115-A
Country	US
Kind code	B2
Filing date	May 4, 2018
Priority date	Jan 23, 2018
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

The present invention includes a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of glass material, the second lens is made of plastic material, the third lens is made of glass material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.

First claim

What is claimed is:

1. A camera optical lens comprising, from an object side to an image side in sequence: a first lens having a positive refractive power with a convex object side surface and a concave image side surface relative to a proximal axis, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power with a convex object side surface and a convex image side surface relative to the proximal axis, a fifth lens having a negative refractive power, and a sixth lens having a positive refractive power; wherein the camera optical lens further satisfies the following conditions:
0.1≤f1/f≤1.68;
1.7≤n1≤2.2;
0.01≤d1/TTL≤0.2;
−5.27≤(R1+R2)/(R1−R2)≤−3.23;
0.25≤d1≤0.54;
1.08≤f4/f≤3.85;
−0.02≤(R7+R8)/(R7−R8)≤0.25;
0.17≤d7≤0.63;
where
f: a focal length of the camera optical lens;
f1: a focal length of the first lens;
n1: a refractive index of the first lens;
d1: a thickness on-axis of the first lens;
TTL: a total optical length of the camera optical lens;
R1: a curvature radius of object side surface of the first lens; and
R2: a curvature radius of image side surface of the first lens;
f4: a focal length of the fourth lens;
R7: a curvature radius of the object side surface of the fourth lens;
R8: a curvature radius of the image side surface of the fourth lens; and
d7: a thickness on-axis of the fourth lens.

2. The camera optical lens as described in claim 1 , wherein the first lens is made of glass material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of plastic material.

3. The camera optical lens as described in claim 1 further satisfying the following conditions:
0.484≤f1/f≤1.581;
1.7≤n1≤2.197;
0.035≤d1/TTL≤0.143.

4. The camera optical lens as described in claim 1 , wherein the second lens has a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions:
1.21≤f2/f≤14.58;
−3.97≤(R3+R4)/(R3−R4)≤−0.83;
0.26≤d3≤0.85; where
f: the focal length of the camera optical lens;
f2: a focal length of the second lens;
R3: a curvature radius of the object side surface of the second lens;
R4: a curvature radius of the image side surface of the second lens; and
d3: a thickness on-axis of the second lens.

5. The camera optical lens as described in claim 4 further satisfying the following conditions:
1.94≤f2/f≤11.66;
−2.48≤(R3+R4)/(R3−R4)≤−1.04;
0.41≤d3≤0.68.

6. The camera optical lens as described in claim 1 , wherein the third lens has a convex object side surface and a concave image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
−3.50≤f3/f≤−0.86;
1.22≤(R5+R6)/(R5−R6)≤3.76;
0.12≤d5≤0.37; where
f: the focal length of the camera optical lens;
f3: a focal length of the third lens;
R5: a curvature radius of the object side surface of the third lens;
R6: a curvature radius of the image side surface of the third lens; and
d5: a thickness on-axis of the third lens.

7. The camera optical lens as described in claim 6 further satisfying the following conditions:
−2.19≤f3/f≤−1.07;
1.96≤(R5+R6)/(R5−R6)≤3.01;
0.19≤d5≤0.30.

8. The camera optical lens as described in claim 1 further satisfying the following conditions:
1.74≤f4/f≤3.08;
−0.01≤(R7+R8)/(R7−R8)≤0.20;
0.27≤d7≤0.50.

9. The camera optical lens as described in claim 1 , wherein the fifth lens has a concave object side surface and a convex image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
−9.89≤f5/f≤−1.69;
−9.03≤(R9+R10)/(R9−R10)≤−1.69;
0.23≤d9≤0.84; where
f: the focal length of the camera optical lens;
f5: a focal length of the fifth lens;
R9: a curvature radius of the object side surface of the fifth lens;
R10: a curvature radius of the image side surface of the fifth lens; and
d9: a thickness on-axis of the fifth lens.

10. The camera optical lens as described in claim 9 further satisfying the following conditions:
−6.18≤f5/f≤−2.12;
−5.65≤(R9+R10)/(R9−R10)≤−2.11;
0.370≤d9≤0.67.

11. The camera optical lens as described in claim 1 , wherein the sixth lens has a convex object side surface and a concave image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
2.08≤f6/f≤23.33;
7.51≤(R11+R12)/(R11−R12)≤25.33;
0.35≤d11≤1.04; where
f: the focal length of the camera optical lens;
f6: a focal length of the sixth lens;
R11: a curvature radius of the object side surface of the sixth lens;
R12: a curvature radius of the image side surface of the sixth lens; and
d11: a thickness on-axis of the sixth lens.

12. The camera optical lens as described in claim 11 further satisfying the following conditions:
3.33≤f6/f≤18.66;
12.01≤(R11+R12)/(R11−R12)≤20.27;
0.55≤d11≤0.83.

13. The camera optical lens as described in claim 1 further satisfying the following condition:
0.40−f12/f≤1.43; where
f12: a combined focal length of the first lens and the second lens;
f: the focal length of the camera optical lens.

14. The camera optical lens as described in claim 13 further satisfying the following condition:
0.64≤f12/f≤1.14.

15. The camera optical lens as described in claim 1 , wherein the total optical length TTL of the camera optical lens is less than or equal to 5.77 mm.

16. The camera optical lens as described in claim 15 , wherein the total optical length TTL of the camera optical lens is less than or equal to 5.51 mm.

17. The camera optical lens as described in claim 1 , wherein an aperture F number of the camera optical lens is less than or equal to 1.96.

18. The camera optical lens as described in claim 17 , wherein the aperture F number of the camera optical lens is less than or equal to 1.92.

Assignees

• Aac Technologies Pte Ltd
• Aac Optics Solutions Pte Ltd

Inventors

• Fang Chunhuan
• Zhang Lei
• Wang Yanmei
• Ji Yi

Classifications

• G02B13/0045

  having five or more lenses · CPC title

• G02B9/62 Primary

  having six components only · CPC title

• G02B7/04

  with mechanism for focusing or varying magnification · CPC title

• G02B27/0025

  for optical correction, e.g. distorsion, aberration · CPC title

• G02B5/20

  Filters (polarising elements G02B5/30) · CPC title