Camera lens barrel, camera module, and optical device

Patent metadata

Field	Value
Publication number	US-10948803-B2
Application number	US-201716336377-A
Country	US
Kind code	B2
Filing date	Sep 25, 2017
Priority date	Sep 26, 2016
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

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 base;
a housing disposed at one side of the base;
a lens barrel disposed in the housing;
a cover disposed at one side of the housing;
a first substrate disposed at an other side of the base;
an image sensor installed on the first substrate, and disposed below the lens barrel;
a diaphragm set movably supported in the housing and that adjusts the amount of light incident to the lens barrel;
a first drive unit comprising a first coil and a first magnet that enable the lens barrel and the diaphragm set to move together in an optical axis direction; and
a second substrate disposed on the housing and comprising a plurality of terminals protruding towards an outside for driving the first drive unit,
wherein a second drive unit for driving the diaphragm is disposed in the diaphragm set,
wherein the plurality of terminals are connected to the second drive unit,
wherein the diaphragm set comprises a diaphragm part for adjusting a diameter of an incident tube incident on the lens barrel, 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, and
wherein the elastic support unit comprises a fixing portion that is in contact with one surface of the diaphragm support unit, a vertical connecting portion that couplies with the diaphragm part, a vertical drawing portion that couples with the second substrate, and an elastic portion disposed between the fixing portion and the vertical drawing portion and providing elastic characteristics.

2. The camera module according to claim 1 , wherein the vertical connecting portion extends away from the fixing portion in a first direction, and
wherein the vertical drawing portion extends away from the elastic portion in the first direction.

3. The camera module according to claim 1 , wherein a plurality of wirings are disposed in the elastic support unit, thereby electrically connecting the second substrate and the second drive unit.

4. The camera module according to claim 3 , wherein the second drive unit comprises a second magnet and a second coil, and the second substrate and the second coil are electrically connected.

5. The camera module according to claim 4 , wherein the diaphragm set comprises a second Hall sensor disposed in the diaphragm set, and
wherein the second Hall sensor is electrically connected to the second substrate through the elastic support unit.

6. The camera module according to claim 1 , wherein the lens barrel is disposed below the diaphragm part.

7. The camera module according to claim 1 , wherein the lens barrel comprises a first lens barrel unit and a second lens barrel unit that are spaced apart from each other, and the diaphragm part is disposed between the first lens barrel unit and the second lens barrel unit.

8. The camera module according to claim 1 , wherein the first coil is disposed on the second substrate.

9. The camera module according to claim 8 , comprising a first Hall sensor disposed on the second substrate.

10. The camera module according to claim 9 , wherein the first Hall sensor and the first coil are electrically connected to the first substrate through the plurality of terminals.

11. The camera module according to claim 1 , wherein the plurality of terminals comprises a power line, a ground line, and two control lines.

12. The camera module according to claim 11 , wherein the two control lines are wirings for I2C communication.

13. The camera module according to claim 1 , wherein drive wirings of the first drive unit and drive wirings of the second drive unit are electrically connected to each respective other having the same characteristics.

14. The camera module according to claim 1 , wherein the diaphragm support unit comprises a plurality of separated parts.

15. The camera module according to claim 1 , wherein the diaphragm set comprises a lens coupling portion to which the lens barrel is coupled.

16. The camera module according to claim 15 , wherein the lens coupling portion comprises a first lens coupling portion and a second lens coupling portion,
wherein the lens barrel comprises a first lens barrel unit and a second lens barrel unit spaced apart from each other, and
wherein the first lens barrel unit is coupled to the first lens coupling portion, and the second lens barrel unit is coupled to the second lens coupling portion, and the diaphragm part is disposed between the first lens barrel unit and the second lens barrel unit.

17. The camera module according to claim 1 , comprising an infrared cut filter disposed between the lens barrel and the image sensor.

18. The camera module according to claim 1 , wherein the second substrate comprises first and second parts coupled to the first substrate and spaced apart from each other, and
wherein a portion of the elastic support unit is disposed between the first part and the second part.

19. The camera module according to claim 18 , wherein the elastic portion comprises a unit elastic portion that imparts an elastic characteristic by a plurality of bent portions, and two each of the 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. An optical device comprising:
a main body;
a display unit disposed on one surface of the main body; and
the camera module according to claim 1 electrically connected to the display unit.

Assignees

• Lg Innotek Co Ltd

Inventors

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

Classifications

• H04N23/51

  Housings · CPC title

• H04N23/54

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

• H04N23/55

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

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N23/00

  Cameras or camera modules comprising electronic image sensors; Control thereof · CPC title