Camera lens barrel, camera module, and optical device

Patent metadata

Field	Value
Publication number	US-12248241-B2
Application number	US-202318461969-A
Country	US
Kind code	B2
Filing date	Sep 6, 2023
Priority date	Sep 26, 2016
Publication date	Mar 11, 2025
Grant date	Mar 11, 2025

Abstract

The present invention comprises: a base; a housing disposed at one side of the base; a lens barrel disposed inside the housing; a cover disposed at one side of the housing; a first substrate disposed at the other side of the base; an image sensor which is installed on the first substrate, and disposed below the lens barrel; a diaphragm set which is movably supported inside the housing and which adjusts the amount of light incident to the lens barrel; a first drive unit comprising a first coil and a first magnet which enable the lens barrel and the diaphragm set to move together in the optical axis direction; and a second substrate which is attached to the housing and comprises a plurality of terminals which protrude to the outside as a result of the drive of the first drive unit, wherein the diaphragm set has a second drive unit for driving the diaphragms disposed therein, and the terminals are also connected to the second drive unit.

First claim

The invention claimed is:

1. A camera module comprising:
a first substrate;
an image sensor disposed on the first substrate;
a housing disposed on the first substrate;
a lens barrel disposed in the housing;
a lens coupled with the lens barrel;
a diaphragm part configured to adjust the amount of light incident to the lens;
a first coil and a first magnet configured to move the lens barrel in an optical axis direction;
a second coil and a second magnet configured to drive the diaphragm part;
a first Hall sensor configured to sense the first magnet;
a second Hall sensor disposed on a first surface and configured to sense the second magnet;
a control portion disposed on the first surface and configured to control the diaphragm part based on a signal from the second Hall sensor; and
a second substrate disposed on the housing,
wherein the first coil is electrically connected with the second substrate,
wherein the second Hall sensor is electrically connected with the second substrate, and
wherein at least a portion of the control portion overlaps at least a portion of the second Hall sensor in a first direction perpendicular to the first surface.

2. The camera module of claim 1 , wherein the second coil is electrically connected with the second substrate.

3. The camera module of claim 1 , wherein the first coil and the first Hall sensor are disposed on the second substrate, and
wherein the first Hall sensor is electrically connected with the second substrate.

4. The camera module of claim 1 , wherein the second substrate comprises a terminal exposed outside, and
wherein the first coil, the second coil, the first Hall sensor, and the second Hall sensor are electrically connected with the terminal of the second substrate.

5. The camera module of claim 4 , wherein the terminal of the second substrate comprises a power line, a ground line, and two control lines.

6. The camera module of claim 5 , wherein at least one of the two control lines comprises a line for I2C communication.

7. The camera module of claim 1 , wherein the diaphragm part comprises a blade unit configured to move together with the lens barrel in the optical axis direction.

8. The camera module of claim 1 , wherein the second substrate comprises a common terminal configured to be used for both driving the first coil and driving the second coil.

9. The camera module of claim 1 , wherein the lens comprises a plurality of lenses, and
wherein the diaphragm part is disposed above an uppermost lens of the plurality of lenses.

10. The camera module of claim 1 , comprising:
a diaphragm support unit to which the diaphragm part is fixed; and
an elastic support unit having one end attached to the diaphragm support unit and an other end fixed to the second substrate.

11. The camera module of claim 10 , wherein a plurality of wirings are disposed in the elastic support unit so that the elastic support unit electrically connects the second substrate and the second coil.

12. The camera module of claim 10 , wherein the second Hall sensor is electrically connected with the second substrate through the elastic support unit.

13. The camera module of claim 10 , wherein the diaphragm support unit comprises a first lens coupling portion and a second lens coupling portion,
wherein the lens barrel comprises a first lens barrel unit disposed on the first lens coupling portion and a second lens barrel unit disposed on the second lens coupling portion, and
wherein the diaphragm part is disposed between the first lens barrel unit and the second lens barrel unit.

14. An optical device comprising:
a main body;
a display unit disposed on the main body; and
the camera module of claim 1 electrically connected with the display unit.

15. The camera module of claim 14 , wherein the second coil is electrically connected with the second substrate.

16. The camera module of claim 14 , comprising a first Hall sensor disposed on the second substrate and configured to sense the first magnet,
wherein the first Hall sensor is electrically connected with the second substrate.

17. The camera module of claim 1 , wherein the second Hall sensor is embedded in the control portion.

18. A camera module comprising:
a first substrate;
an image sensor disposed on the first substrate;
a housing disposed on the first substrate;
a lens barrel disposed in the housing;
a lens coupled with the lens barrel;
a diaphragm part configured to adjust the amount of light incident to the lens;
a first coil and a first magnet configured to move the lens barrel in an optical axis direction;
a second coil and a second magnet configured to drive the diaphragm part;
a first Hall sensor configured to sense the first magnet;
a second Hall sensor configured to sense the second magnet;
a second substrate disposed on the housing;
a diaphragm support unit to which the diaphragm part is fixed; and
an elastic support unit having one end attached to the diaphragm support unit and an other end fixed to the second substrate,
wherein the first coil is electrically connected with the second substrate,
wherein the second Hall sensor is electrically connected with the second substrate, and
wherein the elastic support unit comprises a fixing portion contacted with one surface of the diaphragm support unit, a vertical connecting portion coupled with the diaphragm part, a vertical drawing portion coupled with the second substrate, and an elastic portion connecting the fixing portion and the vertical drawing portion and providing elastic characteristics.

19. The camera module of claim 18 , wherein the elastic portion comprises two unit elastic portions that impart an elastic characteristic by a plurality of bent portions, and
wherein the two unit elastic portions are disposed in a symmetrical manner with respect to an opening portion located at a center between the two unit elastic portions.

20. A camera module comprising:
a housing;
a lens barrel disposed in the housing;
a diaphragm part configured to adjust the amount of light incident to the lens barrel;
a first coil and a first magnet configured to move the lens barrel in an optical axis direction;
a second coil and a second magnet configured to drive the diaphragm part;
a second Hall sensor disposed on a first surface and configured to sense the second magnet;
a control portion disposed on the first surface and configured to control the diaphragm part based on a signal from the second Hall sensor; and
a second substrate disposed on the housing,
wherein the first coil is electrically connected with the second substrate,
wherein the second Hall sensor is electrically connected with the second substrate, and
wherein at least a portion of the control portion overlaps at least a portion of the second Hall sensor in a first direction perpendicular to the first surface.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Jae Keun
• Ha Tae Min
• Shin Doo Shik

Classifications

• H04N25/00

  Circuitry of solid-state image sensors [SSIS]; Control thereof · CPC title

• H04N23/60

  Control of cameras or camera modules · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• H04N23/54

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• H04N23/51

  Housings · CPC title