Optical imaging lens

Patent metadata

Field	Value
Publication number	US-11500178-B2
Application number	US-202016783172-A
Country	US
Kind code	B2
Filing date	Feb 6, 2020
Priority date	Nov 26, 2019
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

An optical imaging lens from an object side to an image side includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. A optical-axis region of the object-side surface of the first lens element is convex, a periphery region of the image-side surface of the first lens element is convex, an periphery region of the object-side surface of the second lens element is convex, an periphery region of the object-side surface of the third lens element is convex, an optical-axis region of the image-side surface of the fourth lens element is convex, the fifth lens element has positive refracting power and the sixth lens element has positive refracting power. Only the above-mentioned six lens elements of the optical imaging lens have refracting power.

First claim

What is claimed is:

1. An optical imaging lens, from an object side to an image side in order along an optical axis comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element, the first lens element to the sixth lens element each having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
an optical-axis region of the object-side surface of the first lens element is convex;
a periphery region of the image-side surface of the first lens element is convex;
a periphery region of the object-side surface of the second lens element is convex;
a periphery region of the object-side surface of the third lens element is convex;
an optical-axis region of the image-side surface of the fourth lens element is convex;
the fifth lens element has positive refracting power; and
the sixth lens element has positive refracting power;
wherein only the above-mentioned six lens elements of the optical imaging lens have refracting power, Fno is an f-number of the entire optical imaging lens and HFOV is a half field of view of the entire optical imaging lens, and the optical imaging lens satisfies the relationship: HFOV/Fno≥19.900°.

2. The optical imaging lens of claim 1 , wherein EFL is an effective focal length of the optical imaging lens and BFL is a distance from the image-side surface of the sixth lens element to an image plane along the optical axis, and the optical imaging lens satisfies the relationship: EFL/BFL≤4.000.

3. The optical imaging lens of claim 1 , wherein TL is a distance from the object-side surface of the first lens element to the image-side surface of the sixth lens element along the optical axis, T2 is a thickness of the second lens element along the optical axis, T3 is a thickness of the third lens element along the optical axis and G23 is an air gap between the second lens element and the third lens element along the optical axis, and the optical imaging lens satisfies the relationship: TL/(T2+G23+T3)≤3.500.

4. The optical imaging lens of claim 1 , wherein TTL is a distance from the object-side surface of the first lens element to an image plane along the optical axis, T4 is a thickness of the fourth lens element along the optical axis, T5 is a thickness of the fifth lens element along the optical axis, G45 is an air gap between the fourth lens element and the fifth lens element along the optical axis and G56 is an air gap between the fifth lens element and the sixth lens element along the optical axis, and the optical imaging lens satisfies the relationship: TTL/(T4+G45+T5+G56)≤5.000.

5. The optical imaging lens of claim 1 , wherein T1 is a thickness of the first lens element along the optical axis, T6 is a thickness of the sixth lens element along the optical axis, G23 is an air gap between the second lens element and the third lens element along the optical axis, G34 is an air gap between the third lens element and the fourth lens element along the optical axis and G56 is an air gap between the fifth lens element and the sixth lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T1+T6)/(G23+G34+G56)≤1.900.

6. The optical imaging lens of claim 1 , wherein T1 is a thickness of the first lens element along the optical axis, T2 is a thickness of the second lens element along the optical axis, T3 is a thickness of the third lens element along the optical axis, T4 is a thickness of the fourth lens element along the optical axis, T6 is a thickness of the sixth lens element along the optical axis and G34 is an air gap between the third lens element and the fourth lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T1+T4+T6)/(T2+T3+G34)≤1.300.

7. The optical imaging lens of claim 1 , wherein TL is a distance from the object-side surface of the first lens element to the image-side surface of the sixth lens element along the optical axis, EFL is an effective focal length of the optical imaging lens, T2 is a thickness of the second lens element along the optical axis, T3 is a thickness of the third lens element along the optical axis, G23 is an air gap between the second lens element and the third lens element along the optical axis and G34 is an air gap between the third lens element and the fourth lens element along the optical axis, and the optical imaging lens satisfies the relationship: (TL+EFL)/(T2+G23+T3+G34)≥4.000.

8. An optical imaging lens, from an object side to an image side in order along an optical axis comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element, the first lens element to the sixth lens element each having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
an optical-axis region of the object-side surface of the first lens element is convex;
a periphery region of the image-side surface of the first lens element is convex;
a periphery region of the image-side surface of the second lens element is concave;
a periphery region of the object-side surface of the third lens element is convex;
an optical-axis region of the image-side surface of the fourth lens element is convex;
the fifth lens element has positive refracting power; and
the sixth lens element has positive refracting power;
wherein only the above-mentioned six lens elements of the optical imaging lens have refracting power, Fno is an f-number of the entire optical imaging lens and HFOV is a half field of view of the entire optical imaging lens, and the optical imaging lens satisfies the relationship: HFOV/Fno≥19.900°.

9. The optical imaging lens of claim 8 , wherein EFL is an effective focal length of the optical imaging lens and AAG is a sum of five air gaps from the first lens element to the sixth lens element along the optical axis, and the optical imaging lens satisfies the relationship: EFL/AAG≥3.300.

10. The optical imaging lens of claim 8 , wherein ALT is a sum of thicknesses of all the six lens elements along the optical axis, EFL is an effective focal length of the optical imaging lens and BFL is a distance from the image-side surface of the sixth lens element to an image plane along the optical axis, and the optical imaging lens satisfies the relationship: (ALT+BFL)/EFL≤3.200.

11. The optical imaging lens of claim 8 , wherein TL is a distance from the object-side surface of the first lens element to the image-side surface of the sixth lens element along the optical axis, T3 is a thickness of the third lens element along the optical axis and T4 is a thickness of the fourth lens element along the optical axis, and the optical imaging lens satisfies the relationship: TL/(T3+T4)≤4.000.

12. The optical imaging lens of claim 8 , wherein ALT is a sum of thicknesses of all the six lens elements along the optical axis and AAG is a sum of five air gaps from the first lens element to the sixth lens element along the optical axis, and the optical imaging lens satisfies the relationship: ALT/AAG≥3.000.

13. The optical imaging lens of claim 8 , wherein TTL is a distance from the object-side surface of the first lens element to an image plane along the optical axis, T2 is a thickness of the second lens element along the optical axis, G12 is an air gap between the first lens element and the second lens eleme

Assignees

• Genius Electronic Optical Xiamen Co Ltd

Inventors

• Zhu Qingzhi
• Zhou Ou
• Zhang Jiayuan

Classifications

• G02B13/0015 Primary

  characterised by the lens design · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B9/62 Primary

  having six components only · CPC title

• G02B3/04

  with continuous faces that are rotationally symmetrical but deviate from a true sphere {, e.g. so called "aspheric" lenses} · CPC title