# US 11,310,406 B2 · Photographing module with leaf spring and electronic device including same module

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- Number: US 11,310,406 B2
- Document ID: US11310406B2
- Status: Granted
- Kind: B2
- Application number: 17/146,512
- Filed: 2021-01-12
- Published: 2021-05-06
- Granted: 2022-04-19
- Earliest claimed: 2018-11-06
- Assignees: Largan Digital Co., Ltd.
- Applicants: Largan Digital Co., Ltd.
- Inventors: Te-Sheng Tseng; Wen-Hung Hsu; Ming-Ta Chou
- Web page: https://patentgrep.com/patent/US11310406B2

## CPC

- H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
- G02B 7/08: adapted to co-operate with a remote control mechanism
- G02B 7/09: adapted for automatic focusing or varying magnification
- G03B 3/10: Power-operated focusing
- H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
- H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof
- G02B 7/003: {Alignment of optical elements (G02B7/001, G02B7/002 take precedence; for mirrors G02B7/1822)}
- G02B 13/001: {Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras (G02B23/243 takes precedence)}
- G03B 17/12: with means for supporting objectives, supplementary lenses, filters, masks, or turrets
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

A photographing module includes a metal cover, a base, a lens portion and a leaf spring. The lens portion is displaceably disposed in an inner space. The leaf spring is assembled with the lens portion and includes an inner fixing portion, an outer fixing portion and an elastic portion. The inner fixing portion is assembled with the lens portion. The outer fixing portion contacts and is fixedly disposed with the metal cover. The elastic portion connects the inner fixing portion and the outer fixing portion. The leaf spring further includes a plurality of contact portions and a plurality of auxiliary elastic portions. Each of the auxiliary elastic portions connects the outer fixing portion and one of the contact portions. For the leaf spring, only the contact portions thereof contact side plates of the metal cover.

## Claims

### Claim 1

A photographing module, comprising:
a cover comprising a top plate and a plurality of side plates, wherein the top plate has an opening, and the side plates extend from the top plate along a direction away from the opening;
a base assembled with the cover to define an inner space, wherein the base has a through hole, and the through hole is disposed correspondingly to the opening of the cover;
a lens portion displaceably disposed in the inner space; and
a leaf spring assembled with the lens portion and comprising an inner fixing portion, an outer fixing portion and an elastic portion, wherein the inner fixing portion is assembled with the lens portion, the outer fixing portion is fixedly disposed and is not displaceable with respect to the opening of the cover, and the elastic portion connects the inner fixing portion and the outer fixing portion;
wherein the leaf spring further comprises a plurality of contact portions and a plurality of auxiliary elastic portions, each of the auxiliary elastic portions connects the outer fixing portion and one of the contact portions, and for the leaf spring, only the contact portions thereof contact the side plates of the cover;
wherein a width of one of the auxiliary elastic portions is t, a width of the elastic portion is d, and the following condition is satisfied:
0.25<t/d<4.0.

### Claim 2 (depends on 1)

The photographing module of claim 1, wherein a number of the outer fixing portion of the leaf spring is at least two.

### Claim 3 (depends on 2)

The photographing module of claim 2, wherein at least one of the outer fixing portions is connected to at least two of the auxiliary elastic portions, and each of the at least two of the auxiliary elastic portions is connected to one of the contact portions.

### Claim 4 (depends on 3)

The photographing module of claim 3, wherein a number of the side plates is at least four, and each of the side plates contacts at least one of the contact portions.

### Claim 5 (depends on 2)

The photographing module of claim 2, wherein the top plate comprises at least two step-shaped structures, and for the cover, each of the outer fixing portions contacts only one of the step-shaped structures thereof;
wherein each of the outer fixing portions does not contact the side plates.

### Claim 6 (depends on 5)

The photographing module of claim 5, wherein the auxiliary elastic portions and the outer fixing portions of the leaf spring do not overlap along a radial direction of an optical axis.

### Claim 7 (depends on 5)

The photographing module of claim 5, further comprising:
a glue material applied between the outer fixing portions and the step-shaped structures.

### Claim 8 (depends on 7)

The photographing module of claim 7, wherein an apparent color of the glue material is opaque black.

### Claim 9 (depends on 7)

The photographing module of claim 7, wherein each of the outer fixing portions comprises a notch structure for accommodating the glue material.

### Claim 10 (depends on 2)

The photographing module of claim 2, wherein the width of the one of the auxiliary elastic portions is t, the width of the elastic portion is d, and the following condition is satisfied:
0.5<t/d<2.0.

### Claim 11 (depends on 1)

The photographing module of claim 1, wherein a number of the contact portions is N, and the following condition is satisfied:
4<N<12.

### Claim 12 (depends on 11)

The photographing module of claim 11, wherein the number of the contact portions is N, and the following condition is satisfied:
6<N<10.

### Claim 13 (depends on 9)

The photographing module of claim 9, wherein a spacing structure is located between two of the auxiliary elastic portions, and the spacing structure and the two of the auxiliary elastic portions overlap along a radial direction of an optical axis.

### Claim 14 (depends on 1)

The photographing module of claim 1, wherein a thickness of the leaf spring is greater than a width of one of the auxiliary elastic portions.

### Claim 15 (depends on 1)

The photographing module of claim 1, wherein the lens portion comprises a lens barrel and a plurality of plastic lens elements, the lens barrel is an integrated lens barrel, and the lens barrel is directly assembled with the leaf spring and the plastic lens elements.

### Claim 16 (depends on 1)

An electronic device, comprising:
the photographing module of claim 1; and
an image sensor, wherein the image sensor is disposed on an image surface of the photographing module.