Lens assembly and camera module including the lens assembly

Patent metadata

Field	Value
Publication number	US-10591649-B2
Application number	US-201916513358-A
Country	US
Kind code	B2
Filing date	Jul 16, 2019
Priority date	Dec 6, 2017
Publication date	Mar 17, 2020
Grant date	Mar 17, 2020

Abstract

A lens assembly according to an embodiment includes a holder including a first sidewall having a first opening and a second sidewall having a second opening, a liquid lens unit including at least a portion disposed in the first opening and the second opening, and an adhesive member coupling the holder and the liquid lens unit, wherein the second opening faces the first opening in a direction perpendicular to an optical-axis of the liquid lens unit.

First claim

What is claimed is:

1. A lens assembly, comprising:
a holder comprising a sidewall having a hole;
a focus adjustable lens unit comprising at least a portion disposed in the hole; and
an adhesive member coupling the holder and the focus adjustable lens unit,
wherein the focus adjustable lens unit comprises an area disposed outside of the hole of the holder, and
wherein the adhesive member is coupled to the area of the focus adjustable lens unit.

2. The lens assembly according to claim 1 , wherein the holder comprises:
a holder upper area disposed above the focus adjustable lens unit; and
a holder lower area disposed below the focus adjustable lens unit.

3. The lens assembly according to claim 1 , wherein the adhesive member seals the holder to inhibit a foreign substance from being introduced inside the holder through the hole from an outside.

4. The lens assembly according to claim 2 , wherein the adhesive member comprises:
a first adhesive coupling the holder upper area and the focus adjustable lens unit; and
a second adhesive coupling the holder lower area and the focus adjustable lens unit.

5. The lens assembly according to claim 1 , wherein the hole comprises a first hole and a second hole, the second hole facing the first hole in a first direction perpendicular to an optical axis direction,
wherein the side wall comprises a first side wall and a second side wall disposed opposite to the first side wall,
wherein the first side wall has the first hole, and
wherein the second side wall has the second hole.

6. The lens assembly according to claim 5 , wherein the area of the focus adjustable lens unit comprises:
a first area disposed outside of the first hole of the holder,
a second area disposed outside of the second hole of the holder, and
wherein the adhesive member comprises:
a first adhesive disposed in the first area of the focus adjustable lens unit and disposed on an upper portion of the focus adjustable lens unit;
a second adhesive disposed in the first area of the focus adjustable lens unit and disposed on a lower portion and a side portion of the focus adjustable lens unit;
a third adhesive disposed in the second area of the focus adjustable lens unit and disposed on the upper portion of the focus adjustable lens unit; and
a fourth adhesive disposed in the second area of the focus adjustable lens unit and disposed on the lower portion and the side portion of the focus adjustable lens unit.

7. The lens assembly according to claim 5 , wherein the focus adjustable lens unit comprises:
a focus adjustable lens; and
a spacer disposed surrounding a lateral surface of the focus adjustable lens.

8. The lens assembly according to claim 7 , wherein the focus adjustable lens unit comprises:
a first connection substrate disposed above the focus adjustable lens; and
a second connection substrate disposed below the focus adjustable lens, and
wherein the spacer is disposed between the first connection substrate and the second connection substrate.

9. The lens assembly according to claim 7 , wherein at least a portion of the spacer is disposed in the first hole and the second hole.

10. The lens assembly according to claim 9 , wherein the spacer protrudes outward from the holder through the first hole and the second hole.

11. The lens assembly according to claim 7 , wherein the focus adjustable lens comprises at least a portion disposed in the first hole and the second hole.

12. A lens assembly, comprising:
a holder comprising a hole;
a focus adjustable lens unit comprising a portion protruding outside of the holder through the hole; and
an adhesive member coupling the holder and the focus adjustable lens unit,
wherein the adhesive member comprises:
a first adhesive coupling the holder and an upper surface of the focus adjustable lens unit; and
a second adhesive coupling the holder and a lower surface and a side surface of the focus adjustable lens unit.

13. The lens assembly according to claim 12 , wherein the first adhesive has an I-shaped form, and the second adhesive has a U-shaped form.

14. The lens assembly according to claim 12 , wherein the hole comprises a first hole and a second hole, the second hole facing the first hole in a first direction perpendicular to an optical axis direction, and
wherein the first and second adhesives are coupled to an area disposed outside of each of the first and second holes of the holder.

15. The lens assembly according to claim 12 , wherein the second adhesive is connected to the first adhesive.

16. The lens assembly according to claim 12 , wherein the second adhesive has a contraction rate smaller than a contraction rate of the first adhesive.

17. The lens assembly according to claim 14 , wherein the holder comprises a first side wall and a second side wall disposed opposite to the first side wall,
wherein the first side wall has the first hole, and
wherein the second side wall has the second hole.

18. The lens assembly according to claim 12 , wherein at least one of the first or second adhesive comprises a silicon-based adhesive.

19. A camera module, comprising:
a board;
a holder disposed on the board;
a first lens unit disposed in the holder;
a second lens unit disposed in the holder;
a focus adjustable lens unit disposed between the first lens unit and the second lens unit; and
an adhesive member coupling the holder and the focus adjustable lens unit,
wherein the holder comprises a sidewall having a hole,
wherein at least a portion of the focus adjustable lens unit is disposed in the hole,
wherein the focus adjustable lens unit comprises an area disposed outside of the hole of the holder, and
wherein the adhesive member is coupled to the area of the focus adjustable lens unit.

20. The camera module according to claim 19 , comprising a cover disposed so as to surround the holder, the focus adjustable lens unit, and the adhesive member,
wherein the holder comprises an upper surface in direct physical contact with the cover and located higher than an upper surface of the adhesive member.

Assignees

• Lg Innotek Co Ltd

Inventors

• Choi Yong Bok

Classifications

• G03B17/12

  with means for supporting objectives, supplementary lenses, filters, masks, or turrets · CPC title

• G03B2205/0007

  Movement of one or more optical elements for control of motion blur · 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

• G02B3/14 Primary

  of variable focal length · CPC title

• G03B13/36

  Autofocus systems · CPC title