Lens assembly and camera module including the lens assembly

Patent metadata

Field	Value
Publication number	US-11041979-B2
Application number	US-202016782666-A
Country	US
Kind code	B2
Filing date	Feb 5, 2020
Priority date	Dec 6, 2017
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

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 a focus adjustable lens and a spacer disposed surrounding a lateral surface of the focus adjustable lens,
wherein the adhesive member is disposed on the spacer,
wherein the focus adjustable lens comprises a liquid lens,
wherein the liquid lens comprises:
a conductive liquid;
an insulative liquid;
an electrode,
a first plate having a cavity, the conductive liquid and the insulative liquid being disposed in the cavity; and
a second plate and a third plate, the first plate being disposed between the second plate and the third plate.

2. The lens assembly according to claim 1 , wherein the focus adjustable lens unit comprises a connection unit connected to the electrode electrically.

3. The lens assembly according to claim 2 ,
wherein the adhesive member is disposed on the connection unit.

4. The lens assembly according to claim 2 , wherein the connection unit is disposed on the liquid lens and the spacer.

5. The lens assembly according to claim 4 , wherein the connection unit is disposed on the electrode.

6. 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, and
wherein the adhesive member comprises a first adhesive coupling the holder upper area and the spacer.

7. The lens assembly according to claim 6 , wherein the adhesive member comprises a second adhesive disposed on the sidewall, and wherein the second adhesive is disposed on an area corresponding to a corner of the holder.

8. The lens assembly according to claim 7 , wherein the first adhesive comprises a UV curing adhesive, and
wherein the second adhesive comprises a thermal curing adhesive.

9. The lens assembly according to claim 7 , wherein the second adhesive is connected to the first adhesive.

10. The lens assembly according to claim 1 , 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.

11. 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 includes the first hole, and
wherein the second side wall includes the second hole.

12. The lens assembly according to claim 11 , wherein the focus adjustable lens unit comprises:
a first area disposed outside of the first hole of the holder; and
a second area disposed outside of the second hole of the holder, and
wherein the adhesive member comprises:
a first adhesive disposed on 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 on the first area of the focus adjustable lens unit and disposed on a corner portion of the holder and a side portion of the focus adjustable lens unit;
a third adhesive disposed on 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 on the second area of the focus adjustable lens unit and disposed on an another corner portion of the holder and the side portion of the focus adjustable lens unit.

13. The lens assembly according to claim 11 , wherein the spacer protrudes outward from the holder through the first hole and the second hole.

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

15. 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 and a second adhesive coupling the holder and the focus adjustable lens unit,
wherein the first adhesive is disposed on an area corresponding to a side of the holder, and
wherein the second adhesive is disposed on an area corresponding to a corner of the holder.

16. 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 comprises a focus adjustable lens and a spacer disposed surrounding a lateral surface of the focus adjustable lens,
wherein the adhesive member is disposed on the spacer,
wherein the focus adjustable lens comprises a liquid lens,
wherein the liquid lens comprises:
a conductive liquid;
an insulative liquid;
an electrode,
a first plate having a cavity, the conductive liquid and the insulative liquid being disposed in the cavity; and
a second plate and a third plate, the first plate being disposed between the second plate and the third plate.

Assignees

• Lg Innotek Co Ltd

Inventors

• Choi Yong Bok

Classifications

• G02B13/0075

  having an element with variable optical properties · CPC title

• G03B5/00

  Adjustment of optical system relative to image or object surface other than for focusing · CPC title

• G03B17/12

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

• G03B3/10

  Power-operated focusing · CPC title