Camera module having a focus adjusting unit

• US 10,257,398 B2
• Filed: 07/29/2015
• Issued: 04/09/2019
• Est. Priority Date: 08/04/2014
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Park, Seung Ryong
• Primary Examiner(s): Lam, Hung H
• Application Number:
  US15/500,357
• Publication Number:
  US 20170223245A1
• Time in Patent Office: 1,350 Days
• CPC Class Codes: G02B 7/04 with mechanism for focusing or varying magnification
• CPC Class Codes: G03B 13/32 Means for focusing
• CPC Class Codes: G03B 17/08 Waterproof bodies or housings
• CPC Class Codes: G03B 30/00 Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
• CPC Class Codes: H04N 23/51 Housings
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Abstract

The present embodiment relates to a camera module comprising: a first body; a second body coupled to the first body; a lens unit coupled to the second body; a circuit substrate unit located in an internal space formed by the first body and the second body and having an image sensor mounted thereon; and a focusing unit formed in the second body, and moving and fixing the lens unit or the circuit substrate unit in an optical axis direction of the lens unit, wherein a distance between the lens unit and the image sensor in the optical axis direction is adjusted through the focusing unit.

Claims

1. A camera module, comprising:

a first body;

a second body coupled to the first body;

a lens part coupled to the second body;

a circuit board part disposed at an inner space formed by the first body and the second body and fixed to the first body, and mounted with an image sensor; and

a focus adjusting unit comprising a body part coupled to the circuit board part,

wherein the second body comprises an outer projection part formed on a floor surface and an inner projection part formed on the floor surface,

wherein a concave part is formed between the inner projection part and the outer projection part,

wherein the body part is accommodated in the concave part,

wherein the body part comprises a screw thread coupled to a screw formed at an inner surface of the concave part of the second body, and

wherein a distance in an optical axis direction of the lens part between the lens part and the image sensor can be adjusted by the focus adjusting unit.

2. The camera module of claim 1, wherein the focus adjusting unit moves the second body to an optical axis direction of the lens part relative to the first body.

3. The camera module of claim 1, wherein the focus adjusting unit moves the circuit board part relative to the second body.

4. The camera module of claim 1, wherein a length of the concave part in a direction perpendicular to the optical axis direction is larger than a length of the body part in a direction perpendicular to the optical axis direction.

5. The camera module of claim 1, wherein the body part comprises a screw thread coupled to a screw formed at an inner surface of the outer projection part of the second body.

6. The camera module of claim 1, wherein the body part comprises a screw thread coupled to a screw formed at an outer surface of the inner projection part of the second body.

7. The camera module of claim (claim 1, wherein a lens barrel provided in the lens part is integrally formed with the second body.

8. The camera module of claim 1, wherein the lens part includes a lens barrel including at least one lens and accommodating the lens, and further includes a cover glass coupled to an upper surface of the lens barrel, and the second body fixes the cover glass to an upper surface of the lens barrel.

9. The camera module of claim 1, wherein the circuit board part includes a first circuit board mounted with an image sensor, and a second circuit board electrically connected to the first circuit board.

10. The camera module of claim 9, wherein each of the first circuit board and the second circuit board takes a disk shape.

11. The camera module of claim 9, wherein the first circuit board is screw- connected to the first body.

12. The camera module of claim 1, further comprising a cushioning member disposed between the circuit board part and the first body, wherein the circuit board part is accommodated to the first body through the cushioning member.

13. The camera module of claim 1, further comprising a first sealing member interposed between the first body and the second body.

14. The camera module of claim 8, further comprising a second sealing member interposed between the second body and the cover glass.

15. The camera module of claim 1, further comprising a cover glass coupled to an upper surface of the second body and a second sealing member interposed between the upper surface of the second body and the cover glass.

16. The camera module of claim 1, wherein the lens part comprises at least one lens, and

wherein the concave part is overlapped with the lens part in a horizontal direction.