Optical mechanism and lens module threrof

Patent metadata

Field	Value
Publication number	US-11215783-B2
Application number	US-201816047812-A
Country	US
Kind code	B2
Filing date	Jul 27, 2018
Priority date	Jul 28, 2017
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A lens module is provided, including a holder, a barrel, and an optical element. The optical element is affixed in the barrel, and the holder has a first material. Additionally, the barrel is affixed in the holder and has a second material, wherein the hardness of the first material is greater than the hardness of the second material.

First claim

What is claimed is:

1. An optical mechanism, comprising:
a housing, having a top portion and a plurality of sidewall portions connected to the top portion;
a lens module, disposed in the housing and comprising a holder, a barrel, and an optical element, wherein the barrel is affixed in the holder, the optical element is affixed in the barrel, and the holder has a connection surface and a protrusion protruding from the connection surface toward the housing, and the protrusion has a top surface facing the housing;
a depressed structure, formed at a corner of the top portion and located adjacent to one of the sidewall portions, wherein the depressed structure is depressed toward the lens module;
a driving assembly, having a coil and a magnet for driving the lens module to move relative to the housing; and
a first resilient element, connecting an inner surface of the depressed structure with the connection surface of the holder, wherein when the lens module is in an initial position relative to the housing, the top surface of the protrusion has a height between the connection surface and the inner surface, and when the lens module moves toward the housing to a limit position, the top surface contacts the housing to restrict the lens module in the limit positions;
wherein the protrusion is covered by the housing along the optical axis.

2. The optical mechanism as claimed in claim 1 , wherein the depressed structure and the magnet at least partially overlap when viewed along the optical axis of the lens module.

3. The optical mechanism as claimed in claim 2 , wherein the depressed structure includes a substantially triangular main portion and a longitudinal portion extending along an edge of the top portion, and the longitudinal portion and the magnet at least partially overlap when viewed along the optical axis.

4. The optical mechanism as claimed in claim 1 , wherein the optical mechanism further comprises a quadrilateral base forming an abutting surface located at a corner of the base, perpendicular to the optical axis of the lens module, and abutting the housing.

5. The optical mechanism as claimed in claim 1 , wherein the optical mechanism further comprises a quadrilateral base having a bottom plate and a protrusion protruding from the bottom plate and toward the magnet, wherein the protrusion forms an outer surface adjacent to the housing and substantially parallel to the optical axis of the lens module.

6. The optical mechanism as claimed in claim 5 , wherein the base further has two protrusions and a recess, and the recess is formed between the two protrusions and corresponds to the magnet.

7. The optical mechanism as claimed in claim 6 , wherein the recess forms a sloped surface that extends toward the housing to an edge of the base.

8. The optical mechanism as claimed in claim 1 , wherein the holder further has a hollow main body and a restricting portion, the connection surface is formed on the main body, and the restricting portion protrudes outward from the main body along a horizontal direction to restrict the coil in a predetermined position on the holder, wherein the horizontal direction is perpendicular to the optical axis of the lens module, and the restricting portion and the magnet at least partially overlap when viewed along the horizontal direction.

9. The optical mechanism as claimed in claim 8 , wherein the optical mechanism further comprises a conductive wire connected to the coil, and the holder further has a leg with the conductive wire wound thereon, wherein the leg and the magnet at least partially overlap when viewed along the horizontal direction.

10. The optical mechanism as claimed in claim 8 , wherein the magnet has a first height along the optical axis of the lens module, and the coil has a second height along the optical axis, wherein the first height is greater than twice the second height.

11. The optical mechanism as claimed in claim 8 , wherein the connection surface is located on a side of the restricting portion, and the protrusion directly connects to the restricting portion, wherein the coil and the protrusion at least partially overlap when viewed along the optical axis of the lens module.

12. The optical mechanism as claimed in claim 1 , wherein the optical mechanism further comprises a base, a conductive member, and a second resilient element connecting the base with the holder, wherein the housing is affixed to the base, and the conductive member is electrically connected to the coil and has an embedded portion embedded in the base, wherein the base forms a fixed surface, and the second resilient element has an end portion affixed to the fixed surface, wherein the projection area of the embedded portion onto the fixed surface is smaller than the projection area of the end portion onto the fixed surface.

13. The optical mechanism as claimed in claim 1 , wherein the top surface of the protrusion and the limit position have a first height difference along the optical axis of the lens module, and the inner surface and the limit position have a second height difference along the optical axis, wherein the first height difference is greater than the second height difference.

14. The optical mechanism as claimed in claim 13 , wherein the connection surface and the top surface have a third height difference along the optical axis, and the third height difference is greater than the second height difference.

Assignees

• Tdk Taiwan Corp

Inventors

• Lin Yu-Cheng
• Kuo Chen-Chi
• Lin Kun-Shih
• Wu Fu-Yuan

Classifications

• H02K41/00

  Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path {(electromagnetic launchers F41B6/00)} · CPC title

• G02B7/08

  adapted to co-operate with a remote control mechanism · CPC title

• G02B13/009

  having zoom function · CPC title

• G02B7/04 Primary

  with mechanism for focusing or varying magnification · CPC title

• G02B7/02 Primary

  for lenses {(supports for magnifying lenses G02B25/002)} · CPC title