CAMERA MODULE AND MANUFACTURING METHOD THEREOF

• US 20180324337A1
• Filed: 06/30/2016
• Published: 11/08/2018
• Est. Priority Date: 10/28/2015
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: YOSHIKAWA, Atsushi, IWANO, Shota
• Granted Patent: US 10,764,478 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 7/02 for lenses supports for magnifying lenses G02B25/002
• CPC Class Codes: G02B 7/021 for more than one lens
• CPC Class Codes: G02B 7/04 with mechanism for focusing or varying magnification
• CPC Class Codes: G03B 17/02 Bodies
• 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

Abstract

A camera module includes a lens unit containing a lens, a holding member provided with an image sensor and an engaging member of cured resin. At least a part of the engaging member includes a surface that intersects with a direction of an optical axis of the lens and the lens unit and the holding member are engaged with each other on the surface.

Claims

1. A camera module comprising a lens unit containing a lens, a holding member provided with an image sensor and an engaging member of cured resin, wherein at least a part of the engaging member includes a surface that intersects with a direction of an optical axis of the lens, and on the surface, the lens unit and the holding member are engaged with each other.

2. The camera module according to claim 1, wherein the lens unit is provided with a first engaging part and the holding member is provided with a second engaging part, and the engaging member engages the first engaging part and second engaging part with each other in the direction of the optical axis of the lens.

3. The camera module according to claim 2, wherein the second engaging part is a through hole, the first engaging part is a hole, the engaging member communicates the through hole with the hole, and at least a part of an inner peripheral surface of the hole has a shape that can be sandwiched by the engaging member in the direction of the optical axis of the lens.

4. The camera module according to claim 3, wherein the lens unit includes a plurality of the holes, and further includes a groove that connects the holes, and wherein the groove is provided at least on a part of a circumference of the optical axis of the lens.

5. The camera module according to claim 3, wherein the holding member has a notch that communicates an end of the holding member with the through hole.

6. The camera module according to claim 1, wherein the lens unit includes a boss that projects to a side that faces the holding member, and at least a part of the boss is in contact with the engaging member.

7. The camera module according to claim 6, wherein the lens unit includes a plurality of the bosses, and further includes a rib that connects the bosses, and wherein the rib is provided at least on a part of the circumference of the optical axis of the lens.

8. The camera module according to claim 1, wherein a normal line on at least a part of a surface of the engaging member in contact with the holding member has a component that directs toward a side of the lens unit and is in parallel with the optical axis of the lens.

9. The camera module according to claim 1, further comprising a spacer between the lens unit and the holding member.

10. The camera module according to claim 1, wherein the engaging member is a resin rivet.

11. The camera module according to claim 1, wherein the engaging member is a resin screw.

12. The camera module according to claim 1, wherein the cured resin is a photo-curable resin.

13. The camera module according to claim 1, wherein the cured resin is a thermosetting resin.

14. The camera module according to claim 13, wherein the thermosetting resin cures at temperatures lower than a melting point of the lens unit and of the holding member.

19. The camera module according to claim 4, wherein the holding member has a notch that communicates an end of the holding member with the through hole.

15. A camera module manufacturing method comprising steps of:

filling a resin with a lens unit containing a lens and a holding member provided with an image sensor aligned with each other in a direction of an optical axis of the lens; and

curing the resin to produce an engaging member of cured resin, wherein at least a part of the engaging member has a surface that intersects with a direction of the optical axis of the lens, and on the surface, the lens unit and the holding member are engaged with each other.

16. The camera module manufacturing method according to claim 15, further comprising a step of aligning the lens unit and the holding member with each other such that the optical axis of the lens and a perpendicular line passing through a center of a light receiving surface of the image sensor coincide with each other, and an image forming position of the lens 21 coincides with the light receiving surface of the image sensor 31.

17. The camera module manufacturing method according to claim 15, wherein, in the step of producing the engaging member, the resin is cured by light, and after that, the resin is further cured by heating.

18. The camera module manufacturing method according to claim 16, wherein, in the step of producing the engaging member, the resin is cured by light, and after that, the resin is further cured by heating.