Camera module with liquid lens and image plane correction method thereof

Patent metadata

Field	Value
Publication number	US-11997374-B2
Application number	US-201917312582-A
Country	US
Kind code	B2
Filing date	Oct 25, 2019
Priority date	Dec 13, 2018
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

The present invention discloses a camera module with liquid lens and an image plane correction method thereof, wherein the camera module with liquid lens includes a photosensitive assembly, a lens assembly and a correction lens, and the lens assembly includes a liquid lens with adjustable focal power, the liquid lens is held in a photosensitive path of the photosensitive assembly, and the correction lens is held in the photosensitive path of the photosensitive assembly, and the correction lens is located between the liquid lens and the photosensitive assembly, the correction lens and the liquid lens of the lens assembly cooperate with each other to compensate for aberrations, so as to correct the aberration of the optical system of the camera module with liquid lens.

First claim

The invention claimed is:

1. A camera module with liquid lens, which is characterized by comprising:
a photosensitive assembly;
a lens assembly, wherein the lens assembly includes a liquid lens with adjustable focal power, and the liquid lens is held in a photosensitive path of the photosensitive assembly; and
a correction lens, wherein the correction lens is held in the photosensitive path of the photosensitive assembly, and the correction lens is located between the liquid lens and the photosensitive assembly, and the correction lens and the liquid lens of the lens assembly cooperate with each other to compensate for aberrations;

wherein the correction lens includes at least one compensation liquid lens, and focal power of the compensation liquid lens and focal power of the liquid lens cooperate with each other to compensate for aberrations.

2. The camera module with liquid lens according to claim 1 , wherein the correction lens includes at least one rigid lens and a driving element, and at least one of the rigid lenses is drivably connected to the driving element in a manner of capable of reciprocating along an optical axis of the liquid lens.

3. The camera module with liquid lens according to claim 2 , wherein the rigid lens has a second light-incident surface and a second light-emitting surface opposite to the second light-incident surface, and the second light-incident surface faces the liquid lens, and the second light-emitting surface faces the photosensitive assembly, and a distance between the second light-emitting surface of the rigid lens and the photosensitive assembly can be adjusted.

4. The camera module with liquid lens according to claim 3 , wherein the second light-incident surface is a concave surface, and the second light-emitting surface is a convex surface, and a curvature of the second light-incident surface is greater than a curvature of the second light-incident surface.

5. The camera module with liquid lens according to claim 3 , wherein the second light-incident surface is a convex surface, and the second light-emitting surface is a concave surface, and a curvature of the second light-emitting surface is greater than a curvature of the second light-incident surface.

6. The camera module with liquid lens according to claim 3 , wherein the second light-incident surface of the rigid lens is a flat surface and the second light-emitting surface is a concave surface; or the second light-incident surface of the rigid lens is a concave surface and the second light-emitting surface is a flat surface; or the second light-incident surface of the rigid lens is a concave surface and the second light-emitting surface is a concave surface.

7. The camera module with liquid lens according to claim 1 , wherein the compensation liquid lens includes a second light-incident film layer and a second light-emitting film layer, and the second light-incident film layer and the second light-emitting film layer changes the focal power of the liquid compensation lens in a manner of being deformed.

8. The camera module with liquid lens according to claim 7 , wherein the compensation liquid lens includes a second liquid, and the second liquid is sealed between the second light-incident film layer and the second light-emitting film layers, the second liquid changes the focal power of the compensation lens in a manner of being driven to flow.

9. The camera module with liquid lens according to claim 8 , wherein focal power and refractive index of all the lenses of the camera module meet the following conditions: Σφi/ni=0, where φi is focal power of any one of the lens of the camera module, where ni is refractive index of the lens.

10. The camera module with liquid lens according to claim 9 , wherein the liquid lens includes a first liquid, and refractive index of the first liquid of the liquid lens is greater than refractive index of the second liquid of the compensation liquid lens of the correction lens.

Assignees

• Ningbo Sunny Opotech Co Ltd

Inventors

• Wang Mingzhu
• Yao Lifeng
• Chen Zhenyu
• Xiang Enlai
• Huang Qianyou

Classifications

• H04N23/55 Primary

  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

• H04N23/60

  Control of cameras or camera modules · CPC title

• H04N23/57

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

• G02B27/0025 Primary

  for optical correction, e.g. distorsion, aberration · CPC title