Optical lens assembly and electronic device

Patent metadata

Field	Value
Publication number	US-9671527-B2
Application number	US-201514800491-A
Country	US
Kind code	B2
Filing date	Jul 15, 2015
Priority date	Apr 27, 2015
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

An optical lens assembly, which has an optical axis, includes, at least one dual molded lens element having two plastic parts with different colors. The dual molded lens element includes a transparent portion and a light absorbing portion, wherein the transparent portion has an optical effective region. The dual molded lens element has an outer diameter surface connecting a first side surface and a second side surface of the dual molded lens element, the transparent portion is arranged from an optical effective region of the dual molded lens element to the outer diameter surface and surrounds the dual molded lens element, thus the transparent portion is a part of the outer diameter surface, and the light absorbing portion is located on one of the first side surface and the second side surface of the dual molded lens element.

First claim

What is claimed is:

1. An optical lens assembly, which has an optical axis, comprising:
at least one lens element; and
at least one dual molded lens element having two plastic parts with different colors and formed by an injection molding method, wherein the dual molded lens element is arranged along the optical axis with the lens element, and comprises:
a transparent portion having an optical effective region;
a light absorbing portion; and
at least one axial connecting surface located on one side of the dual molded lens element for connecting the lens element which is adjacent to the axial connecting surface, thus a center of the dual molded lens element and a center of the lens element are aligned;
wherein an angle between the axial connecting surface and the optical axis is θ, and the following condition is satisfied:
0 degrees<θ<40 degrees.

2. The optical lens assembly of claim 1 , wherein the axial connecting surface is disposed on the light absorbing portion.

3. The optical lens assembly of claim 1 , wherein the axial connecting surface is disposed on the transparent portion.

4. The optical lens assembly of claim 2 , wherein a number of the axial connecting surface is at least two, and the axial connecting surfaces are disposed on the light absorbing portion and the transparent portion, respectively.

5. The optical lens assembly of claim 1 , wherein the dual molded lens element further comprises:
a perpendicular parting surface formed by being separated from a mold of the dual molded lens element, the perpendicular parting surface is located on the side of the dual molded lens element which the axial connecting surface is located on, and a vertical distance between the perpendicular parting surface and the optical axis is larger than a vertical distance vertical to the optical axis between the axial connecting surface and the optical axis.

6. The optical lens assembly of claim 2 , wherein the light absorbing portion has an inner side surface and an outer side surface, the inner side surface is connected to the transparent portion, and the optical lens assembly further comprises:
a perpendicular parting surface formed by being separated from a mold of the dual molded lens element, the perpendicular parting surface and the axial connecting surface are located on the outer side surface, and a vertical distance vertical to the optical axis between the perpendicular parting surface and the optical axis is larger than a vertical distance vertical to the optical axis between the axial connecting surface and the optical axis.

7. The optical lens assembly of claim 4 , wherein the light absorbing portion has an inner side surface and an outer side surface, the inner side surface is connected to the transparent portion, and the optical lens assembly further comprises:
a perpendicular parting surface formed by being separated from a mold of the dual molded lens element, the perpendicular parting surface and the axial connecting surface located on the outer side surface, and a vertical distance vertical to the optical axis between the perpendicular parting surface and the optical axis is larger than a vertical distance vertical to the optical axis between the axial connecting surface and the optical axis.

8. The optical lens assembly of claim 1 , wherein the dual molded lens element has an outer diameter surface connecting a first side surface and a second side surface of the dual molded lens element, the transparent portion is arranged from an optical effective region of the dual molded lens element to the outer diameter surface and surrounds the dual molded lens element, thus the transparent portion is a part of the outer diameter surface.

9. The optical lens assembly of claim 2 , wherein the dual molded lens element has an outer diameter surface connecting a first side surface and a second side surface of the dual molded lens element, the transparent portion is arranged from an optical effective region of the dual molded lens element to the outer diameter surface and surrounds the dual molded lens element, thus the transparent portion is a part of the outer diameter surface.

10. The optical lens assembly of claim 4 , wherein the dual molded lens element has an outer diameter surface connecting a first side surface and a second side surface of the dual molded lens element, the transparent portion is arranged from an optical effective region of the dual molded lens element to the outer diameter surface and surrounds the dual molded lens element, thus the transparent portion is a part of the outer diameter surface.

11. The optical lens assembly of claim 1 , wherein the angle between the axial connecting surface and the optical axis is θ, and the following condition is satisfied:
5 degrees<θ<31 degrees.

12. The optical lens assembly of claim 2 , wherein the light absorbing portion is transparent to an infrared light.

13. An electronic device, comprising:
a camera module, comprising:
the optical lens assembly of claim 1 ; and
an image sensor, wherein the image sensor is disposed on an image surface of the optical lens assembly.

14. An optical lens assembly, which has an optical axis, comprising:
at least one dual molded lens element having two plastic parts with different colors, the dual molded lens element comprising:
a transparent portion having an optical effective region; and
a light absorbing portion;
wherein the dual molded lens element has an outer diameter surface connecting a first side surface and a second side surface of the dual molded lens element, the transparent portion is arranged from the optical effective region of the dual molded lens element to the outer diameter surface and surrounds the dual molded lens element, thus the transparent portion is a part of the outer diameter surface, and the light absorbing portion is located on one of the first side surface and the second side surface of the dual molded lens element;
wherein an outer diameter of the dual molded lens element is ψD, an outer diameter of the light absorbing portion is ψpo, and the following condition is satisfied:
0.5<ψpo/ψD≦1.0.

15. The optical lens assembly of claim 14 , wherein the dual molded lens element further comprises:
at least one axial connecting surface located on one side of the dual molded lens element.

16. The optical lens assembly of claim 15 , wherein the dual molded lens element is formed by an injection molding method.

17. The optical lens assembly of claim 15 , wherein the axial connecting surface is disposed on the light absorbing portion.

18. The optical lens assembly of claim 16 , wherein the axial connecting surface is disposed on the light absorbing portion.

19. The optical lens assembly of claim 15 , wherein the axial connecting surface is disposed on the transparent portion.

20. The optical lens assembly of claim 17 , wherein the axial connecting surface is disposed on the transparent portion.

21. The optical lens assembly of claim 18 , wherein the axial connecting surface is disposed on the transparent portion.

22. The optical lens assembly of claim 16 , wherein the dual molded lens element further comprises:
a perpendicular parting surface formed by being separated from a mold of the dual molded lens element, the perpendicular parting surface is located on the side of the dual molded lens element, and a vertical distance vertical to the optical axis between the perpendicular parting surface and the optical axis is larger than a vertical distance ve

Assignees

• Largan Precision Co Ltd

Inventors

• Huang Yeo-Chih
• Chang Ming-Shun

Classifications

• G02B13/0045

  having five or more lenses · CPC title

• G02B5/003 Primary

  Light absorbing elements · CPC title

• G02B13/008 Primary

  designed for infrared light · CPC title

• H04M1/0264

  for a camera module assembly · CPC title

• G02B5/208

  for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation · CPC title