Adjustable optical lens and camera module, manufacturing method and applications thereof

Patent metadata

Field	Value
Publication number	US-11099353-B2
Application number	US-201615772512-A
Country	US
Kind code	B2
Filing date	Oct 25, 2016
Priority date	Oct 30, 2015
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

An adjustable optical lens and camera module, and manufacturing method and applications thereof is disclosed. The camera module includes an optical sensor and an adjustable optical lens. The adjustable optical lens includes an optical structural member and at least two lenses, wherein each of the lenses is arranged in an internal space of the optical structural member. Along a vertical direction of the optical structural member, at least one lens is adapted to be adjustably pre-mounted to an internal space of the optical structural member serving as an adjustable lens. The side wall of the optical structural member is provided with at least one adjustment channel, which is positioned corresponding to the adjustable lens, so that an assembling position of the adjustable lens can be adjusted through the adjustment channel so as to align a central axis line of the adjustable optical lens with a central axis line of the optical sensor.

First claim

What is claimed is:

1. A camera module, comprising:
a photosensitive device including an optical sensor; and
an adjustable optical lens member which is arranged in a photo sensitive path of said optical sensor and comprises an optical structural member, one or more adjustable lenses, and an aperture member, wherein each of said lenses is arranged in an internal space of said optical structural member wherein at least one of said lenses is preassembled in said internal space of said optical structural member serving as an adjustable lens, wherein said aperture member is arranged on top of said optical structural member and on a top side of said adjustable lens preassembled, wherein said aperture member has at least one adhesive injection channel which is located in a side of said photo sensitive path of said optical sensor, and before packaging said adjustable lens and said photosensitive device, an assembling position of said one or more adjustable lenses inside said optical structural member is arranged to be adjusted under said aperture member, so as to change a relative position between said aperture member and said one or more adjustable lenses as well as a relative position between said one or more adjustable lenses and said optical sensor, wherein said adhesive injection channel is extended corresponding to said adjustable lens, such after said adjustable lens is adjusted, said adhesive injection channel is guided for injecting adhesive into said internal space of said optical structural member to affix a position of said adjustable lens once the adhesive is solidified.

2. The camera module, as recited in claim 1 , wherein said optical structural member has at least one adjustment channel provided communicating said internal space of said optical structural member with an external environment, wherein said at least one adjustment channel is positioned corresponding to said one or more adjustable lenses to be preassembled and arranged in said internal space of said optical structural member, wherein each of said one or more adjustable lenses is preassembled in said internal space of said optical structural member is able to be adjusted through said at least one adjustment channel before packaging said adjustable lens and said photosensitive device, wherein said adhesive injection channel is non-parallel to said at least one adjustment channel.

3. The camera module, as recited in claim 2 , wherein each of said one or more adjustable lenses of said adjustable optical lens member in said internal space of said optical structural member is able to be adjusted in at least one direction, wherein a central axis line of each of said one or more adjustable lenses and a central axis line of said optical sensor are coincided or within an allowable range of deviation therebetween after adjustment of said one or more adjustable lenses.

4. The camera module, as recited in claim 3 , wherein said photosensitive device comprises a filter, a lens mount and a circuit board, wherein said filter is affixed on said lens mount and said optical sensor is attached on said circuit board and positioned below said filter, wherein the optical structural member is affixed on a top side of the lens mount.

5. The camera module, as recited in claim 3 , wherein said photosensitive device comprises a filter and a circuit board, wherein said filter is installed in said optical structural member and positioned below said one or more adjustable lenses, wherein said optical sensor is attached on said circuit board and positioned below said filter, wherein a space distance between said optical structural member with respect to said optical sensor is fixed.

6. The camera module, as recited in claim 2 , wherein said photosensitive device comprises a filter, a lens mount and a circuit board, wherein said filter is affixed on said lens mount and said optical sensor is attached on said circuit board and positioned below said filter, wherein the optical structural member is affixed on a top side of the lens mount.

7. The camera module, as recited in claim 2 , wherein said photosensitive device comprises a filter and a circuit board, wherein said filter is installed in said optical structural member and positioned below said one or more adjustable lenses, wherein said optical sensor is attached on said circuit board and positioned below said filter, wherein a space distance between said optical structural member with respect to said optical sensor is fixed.

8. The camera module, as recited in claim 1 , wherein each of said one or more adjustable lenses of said adjustable optical lens member in said internal space of said optical structural member is able to be adjusted in at least one direction, wherein a central axis line of each of said one or more adjustable lenses and a central axis line of said optical sensor are coincided or within an allowable range of deviation therebetween after adjustment of said one or more adjustable lenses.

9. The camera module, as recited in claim 8 , wherein said photosensitive device comprises a filter, a lens mount and a circuit board, wherein said filter is affixed on said lens mount and said optical sensor is attached on said circuit board and positioned below said filter, wherein the optical structural member is affixed on a top side of the lens mount.

10. The camera module, as recited in claim 8 , wherein said photosensitive device comprises a filter and a circuit board, wherein said filter is installed in said optical structural member and positioned below said one or more adjustable lenses, wherein said optical sensor is attached on said circuit board and positioned below said filter, wherein a space distance between said optical structural member with respect to said optical sensor is fixed.

11. The camera module, as recited in claim 1 , wherein said photosensitive device comprises a filter, a lens mount and a circuit board, wherein said filter is affixed on said lens mount and said optical sensor is attached on said circuit board and positioned below said filter, wherein the optical structural member is affixed on a top side of the lens mount.

12. The camera module, as recited in claim 1 , wherein said photosensitive device comprises a filter and a circuit board, wherein said filter is installed in said optical structural member and positioned below said one or more adjustable lenses, wherein said optical sensor is attached on said circuit board and positioned below said filter, wherein a space distance between said optical structural member with respect to said optical sensor is fixed.

13. A manufacturing method of a camera module, comprising steps of:
(A) arranging an adjustable optical lens member along a photosensitive path of an optical sensor of an optical device;
(B) preassembling an aperture member and an adjustable optical element in said adjustable optical lens member to complete a preassembly of said camera module;
(C) adjusting an assembling position of an aperture member for adjusting an incident light beam based on an image obtained by said optical sensor;
(D) adjusting an assembling position of the adjustable optical element to make an imaging of said camera module meeting a resolution requirement;
(E) through an adhesive injecting channel, injecting adhesive into said optical device to affix a position of said adjustable optical element; and
(F) packaging said adjustable optical lens member and said optical device.

14. The method, as recited in claim 13 , wherein the step (D) further comprises the following steps:
(D1) capturing an imaging of said preassembled camera module;
(D2) calculating a calibration measurement for said adjus

Assignees

• Ningbo Sunny Opotech Co Ltd

Inventors

• Wang Mingzhu
• Zhao Bojie
• Jiang Heng
• Ding Liang
• Chen Feifan
• Liu Chunmei
• Guo Nan
• Wang Shoujie

Classifications

• H04N23/55

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

• G02B7/023

  permitting adjustment · CPC title

• G02B7/10 Primary

  by relative axial movement of several lenses, e.g. of varifocal objective lens · CPC title

• G02B5/20

  Filters (polarising elements G02B5/30) · CPC title

• G02B7/003 Primary

  Alignment of optical elements (G02B7/001, G02B7/002 take precedence; for mirrors G02B7/1822) · CPC title