Imaging lens module and mobile terminal

Patent metadata

Field	Value
Publication number	US-9513454-B2
Application number	US-201615098467-A
Country	US
Kind code	B2
Filing date	Apr 14, 2016
Priority date	Nov 19, 2014
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.

First claim

What is claimed is:

1. An imaging lens module, comprising:
an imaging lens assembly comprising at least one lens element, wherein the lens element comprises an effective optical portion disposed on a center of the lens element;
a first optical component being a barrel and comprising:
a side wall, which is closed-shape; and
an end wall connected to one end of the side wall and having a circular opening hole, which is a stop of the imaging lens assembly; and

at least one second optical component having a non-circular opening hole, wherein the second optical component and the imaging lens assembly are disposed in the first optical component, and the non-circular opening hole of the second optical component is corresponded to the circular opening hole of the first optical component;
wherein a line distance between any two points of a peripheral edge of the non-circular opening hole of the second optical component through a center of the non-circular opening hole of the second optical component is m 2AA′ , a minimum line distance between two points of the peripheral edge of the non-circular opening hole of the second optical component through the center of the non-circular opening hole of the second optical component is m 2BB′ , a maximum line distance between two points of the peripheral edge of the non-circular opening hole of the second optical component through the center of the non-circular opening hole of the second optical component is m 2CC′ , an angle between the line distance m 2AA′ of the second optical component and the minimum line distance m 2BB′ of the second optical component is K 2AB , an angle between the maximum line distance m 2CC′ of the second optical component and the minimum line distance m 2BB′ of the second optical component is K 2CB , and the following conditions are satisfied:
m 2BB′ ≦m 2AA′ <m 2CC′ ; and
| K 2AB |>|K 2CB |, wherein | K 2AB | and | K 2CB | are both smaller than or equal to 90 degrees.

2. The imaging lens module of claim 1 , wherein the lens element is made of a plastic material, the effective optical portion is non-circular, a line distance between any two points of a peripheral edge of the effective optical portion of the lens element through the center of the lens element is I AA′ , a minimum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I BB′ , a maximum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I CC′ , an angle between the line distance I AA′ of the lens element and the minimum line distance I BB′ of the lens element is θ AB , an angle between the maximum line distance I CC′ of the lens element and the minimum line distance I BB′ of the lens element is θ CB , and the following conditions are satisfied:
I BB′ ≦I AA′ <I CC′ ; and
|θ AB |>|θ CB |, wherein |θ AB | and |θ CB | are both smaller than or equal to 90 degrees.

3. The imaging lens module of claim 2 , wherein the maximum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I CC′ , a maximum outer diameter of the lens element is Γ CC′ , and the following condition is satisfied:
0.6<I CC′ /Γ CC′ <1.

4. The imaging lens module of claim 3 , wherein the angle between the maximum line distance I CC′ of the lens element and the minimum line distance I BB′ of the lens element is θ CB , and the following condition is satisfied:
50 degrees<|θ CB |<75 degrees.

5. The imaging lens module of claim 3 , wherein the line distance between any two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I AA′ , the maximum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I CC′ , and the following condition is satisfied:
0.80<I AA′ /I CC′ <0.98.

6. The imaging lens module of claim 3 , wherein the maximum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I CC′ , the maximum outer diameter of the lens element is Γ CC′ , and the following condition is satisfied:
0.8<I CC′ /Γ CC′ <0.98.

7. The imaging lens module of claim 1 , wherein the minimum line distance between two points of the peripheral edge of the non-circular opening hole of the second optical component through the center of the non-circular opening hole of the second optical component is m 2BB′ , the maximum line distance between two points of the peripheral edge of the non-circular opening hole of the second optical component through the center of the non-circular opening hole of the second optical component is m 2CC′ , and the following condition is satisfied:
0.50<m 2BB′ /m 2CC′ <0.95.

8. The imaging lens module of claim 1 , wherein the second optical component further comprises:
a side wall, which is closed-shape; and
two end walls, wherein each of the end walls is connected to each of two ends of the side wall separately and has the non-circular opening hole.

9. The imaging lens module of claim 1 , wherein the second optical component is a light blocking plate with an uniform thickness.

10. The imaging lens module of claim 2 , wherein the lens element is a non-circular lens element, a maximum outer diameter of the lens element is Γ CC′ , a minimum outer diameter of the lens element is Γ BB′ , a lens outer diameter of the lens element is Γ AA′ , which excludes the maximum outer diameter Γ CC′ of the lens element and the minimum outer diameter Γ BB′ of the lens element, an angle between the lens outer diameter Γ AA′ of the lens element and the minimum outer diameter Γ BB′ of the lens element is α AB , an angle between the maximum outer diameter Γ CC′ of the lens element and the minimum outer diameter Γ BB′ of the lens element is α CB , and the following conditions are satisfied:
Γ BB′ ≦Γ AA′ <Γ CC′ ; and
|α AB |>|α CB |, wherein |α AB | and |α CB | are both smaller than or equal to 90 degrees.

11. The imaging lens module of claim 10 , wherein the angle between the maximum outer diameter Γ CC′ of the lens element and the minimum outer diameter Γ BB′ of the lens element is α CB , and the following condition is satisfied:
35 degrees<|α CB |<65 degrees.

12. The imaging lens module of claim 10 , wherein the minimum line distance between two points of the peripheral edge of the effective optical portion of the lens element through the center of the lens element is I BB′ , the minimum outer diameter of the lens element is Γ BB′ , and the following condition is satisfied:
0.65<I BB′ /Γ BB′ <1.0.

13. The imaging lens module of claim 1 , further comprising:
an image surface;
wherein the second optical component is closer to the image surface than the imaging lens assembly.

14. A mobile terminal, having a communication function, comprising:
the imaging lens module of claim 1 .

Assignees

• Largan Precision Co Ltd

Inventors

• Lin Cheng-Feng
• Tsai Chun-Hua
• Chou Ming-Ta

Classifications

• G02B7/022

  lens and mount having complementary engagement means, e.g. screw/thread · CPC title

• G02B7/021 Primary

  for more than one lens · CPC title

• G02B9/60

  having five components only · CPC title

• G02B1/041

  Lenses · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title