Optical imaging lens

Patent metadata

Field	Value
Publication number	US-12416785-B2
Application number	US-202217836650-A
Country	US
Kind code	B2
Filing date	Jun 9, 2022
Priority date	Dec 28, 2021
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

An optical imaging lens may include a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the lens elements, the optical imaging lens may increase resolution, enlarge aperture stop and image height, and maintain well image quality.

First claim

What is claimed is:

1. An optical imaging lens, comprising a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth, fifth, sixth, seventh and eighth lens elements having an object-side surface facing toward the object side and allowing imaging rays to pass through and an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
the third lens element has positive refracting power;
an optical axis region of the object-side surface of the fourth lens element is convex;
an optical axis region of the object-side surface of the fifth lens element is convex, and an optical axis region of the image-side surface of the fifth lens element is concave;
an optical axis region of the object-side surface of the sixth lens element is concave;
a periphery region of the object-side surface of the eighth lens element is convex;
lens elements of the optical imaging lens are only the eight lens elements describe above; and
a f-number of the optical imaging lens is represented by Fno, a distance from the image-side surface of the first lens element to the image-side surface of the third lens element along the optical axis is represented by D12t32, a distance from the object-side surface of the fourth lens element to the image-side surface of the fifth lens element along the optical axis is represented by D41t52, a thickness of the first lens element along the optical axis is represented by T1, a distance from the image-side surface of the third lens element to the object-side surface of the fourth lens element along the optical axis is represented by G34, and the optical imaging lens satisfies the inequality:
Fno*( D 12 t 32+ D 41 t 52)/( T 1+ G 34)≤3.300.

2. The optical imaging lens according to claim 1 , a sum of the thicknesses of all eight lens elements along the optical axis is represented by ALT, and ALT, Fno and T1 satisfy the inequality:
ALT*Fno/ T 1≤6.300.

3. The optical imaging lens according to claim 1 , wherein D12t32, D41t52 and G34 satisfy the inequality:
( D 12 t 32+ D 41 t 52)/ G 34≤6.100.

4. The optical imaging lens according to claim 1 , wherein an Abbe number of the fourth lens element is represented by V4, an Abbe number of the fifth lens element is represented by V5, an Abbe number of the sixth lens element is represented by V6, an Abbe number of the eighth lens element is represented by V8, and V4, V6, V8 and V5 satisfy the inequality:
( V 4+ V 6+ V 8)/ V 5≤2.400.

5. The optical imaging lens according to claim 1 , wherein a distance from the object-side surface of the first lens element to an image plane along the optical axis is represented by TTL, a distance from the object-side surface of the seventh lens element to the image-side surface of the eight lens element along the optical axis is represented by D71t82, and Fno, TTL, T1 and D71t82 satisfy the inequality:
Fno*TTL/( T 1+ D 71 t 82)≤4.100.

6. The optical imaging lens according to claim 1 , wherein a distance from the object-side surface of the second lens element to the image-side surface of the third lens element along the optical axis is represented by D21t32, and D21t32 and G34 satisfy the inequality:
D 21 t 32/ G 3≤2.500.

7. The optical imaging lens according to claim 1 , wherein a distance from the object-side surface of the second lens element to the image-side surface of the third lens element along the optical axis is represented by D21t32, a thickness of the sixth lens element along the optical axis is represented by T6, a distance from the image-side surface of the sixth lens element to the object-side surface of the seventh lens element along the optical axis is represented by G67, a thickness of the fourth lens element along the optical axis is represented by T4, a distance from the image-side surface of the fourth lens element to the object-side surface of the fifth lens element along the optical axis is represented by G45, and D21t32, T6, G67, T4 and G45 satisfy the inequality:
( D 21 t 32+ T 6+ G 67)/( T 4+ G 45)≤3.300.

8. An optical imaging lens, comprising a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element sequentially from an object side to an image side along an optical axis, each of the first, second, third, fourth, fifth, sixth, seventh and eighth lens elements having an object-side surface facing toward the object side and allowing imaging rays to pass through and an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
the third lens element has positive refracting power;
an optical axis region of the image-side surface of the fourth lens element is concave, and a periphery region of the image-side surface of the fourth lens element is convex;
an optical axis region of the image-side surface of the fifth lens element is concave;
the sixth lens element has positive refracting power, and an optical axis region of the object-side surface of the sixth lens element is concave;
the seventh lens element has positive refracting power;
lens elements of the optical imaging lens are only the eight lens elements describe above; and
a f-number of the optical imaging lens is represented by Fno, a distance from the image-side surface of the first lens element to the image-side surface of the third lens element along the optical axis is represented by D12t32, a distance from the object-side surface of the fourth lens element to the image-side surface of the fifth lens element along the optical axis is represented by D41t52, a thickness of the first lens element along the optical axis is represented by T1, a distance from the image-side surface of the third lens element to the object-side surface of the fourth lens element along the optical axis is represented by G34, and the optical imaging lens satisfies the inequality:
Fno*( D 12 t 32+ D 41 t 52)/( T 1+ G 34)≤3.600.

9. The optical imaging lens according to claim 8 , wherein an entrance pupil diameter of the optical imaging lens is represented by EPD, an image height of the optical imaging lens is represented by ImgH, a sum of the thicknesses of all eight lens elements along the optical axis is represented by ALT, and EPD, ImgH and ALT satisfy the inequality:
(EPD+ImgH)/ALT≥1.800.

10. The optical imaging lens according to claim 8 , wherein a thickness of the sixth lens element along the optical axis is represented by T6, a distance from the image-side surface of the sixth lens element to the object-side surface of the seventh lens element along the optical axis is represented by G67, a distance from the image-side surface of the seventh lens element to the object-side surface of the eighth lens element along the optical axis is represented by G78, a thickness of the eighth lens element along the optical axis is represented by T8, and T6, G67, G78 and T8 satisfy the inequality:
( T 6+ G 67+ G 78)/ T 8≤4.500.

11. The optical imaging lens according to claim 8 , wherein a distance from the image-side surface of the first lens element to the object-side surface of the second lens element along the optical axis is represented by G12, a distance from the object-side surface of the second lens element to the image-side surface of the third lens element along the optical axis is represented by D21t32, a thickness of the fourth lens element along the optical axis is rep

Assignees

• Genius Electronic Optical Xiamen Co Ltd

Inventors

• Lin Hai
• Liao Huabin
• Zhang Jiayuan
• Hsieh Hung-Chien

Classifications

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G03B30/00

  Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles · CPC title

• G02B13/18

  with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)} · CPC title

• G02B9/64 Primary

  having more than six components · CPC title