# US 8,570,673 B2 · Spacer and lens module

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- Number: US 8,570,673 B2
- Document ID: US8570673B2
- Status: Granted
- Kind: B2
- Application number: 13/340,601
- Filed: 2011-12-29
- Published: 2013-02-28
- Granted: 2013-10-29
- Earliest claimed: 2011-08-25
- Assignees: Hon Hai Precision Industry Co., Ltd.
- Applicants: Chien-Nan Lai; Hung-Lung Ho
- Inventors: Chien-Nan Lai; Hung-Lung Ho
- Web page: https://patentgrep.com/patent/US8570673B2

## CPC

- G02B 13/003: {having two lenses}
- H10F 39/806: {Optical elements or arrangements associated with the image sensors}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION

## Abstract

A spacer includes an object-side surface, an image-side surface, and an outer sidewall. The image-side surface is opposite to the object-side surface. The outer sidewall defines a first cutout and a second cutout. The first cutout and the second cutout penetrate through the object-side surface and the image-side surface. Contours of the first cutout and the second cutout are different from each other.

## Claims

### Claim 1

A spacer, comprising:
an object-side surface;
an image-side surface opposite to the object-side surface; and
an outer sidewall defining a first cutout and a second cutout; the first cutout and the second cutout penetrating through the object-side surface and the image-side surface; contours of the first cutout and the second cutout being different from each other;
wherein a first projection of the spacer projected in a direction from the object-side surface to the image-side surface is different from a second projection of the spacer projected in another direction from the image-side surface to the object-side surface.

### Claim 2 (depends on 1)

The spacer of claim 1, wherein the first cutout comprises a first lower surface connecting the outer sidewall, and the first lower surface is flat; the second cutout comprises a second lower surface connecting the outer sidewall, and the second lower surface is concave.

### Claim 3 (depends on 2)

The spacer of claim 2, wherein the second cutout is positioned at a clockwise direction of the first cutout when looking at the object-side surface; the second cutout is positioned at a counterclockwise direction of the first cutout when looking at the image-side surface.

### Claim 4 (depends on 2)

The spacer of claim 2, wherein a first vertical line from a center point of the first lower surface to an optical axis of the spacer is substantially perpendicular to a second vertical line from a center point of the second lower surface to the optical axis.

### Claim 5 (depends on 1)

The spacer of claim 1, wherein the first cutout and the second cutout are located at two different diameters of the spacer.

### Claim 6 (depends on 1)

The spacer of claim 1, comprising an inner sidewall, wherein the inner sidewall is inclined in relative to the optical axis.

### Claim 7 (depends on 1)

The spacer of claim 1, wherein the outer sidewall is a cylindrical surface symmetrical about the optical axis of the spacer.

### Claim 8

A lens module, comprising:
a lens barrel comprising an object-side end and an image-side end opposite to the object-side end;
a first lens received in the lens barrel, and adjacent to the object-side end;
a second lens received in the lens barrel, and adjacent to the image-side end in relative to the first lens; and
a spacer positioned between the first lens and the second lens, the spacer comprising:
an object-side surface;
an image-side surface opposite to the object-side surface; and
an outer sidewall defining a first cutout and a second cutout; the first cutout and the second cutout penetrating through the object-side surface and the image-side surface; contours of the first cutout and the second cutout being different from each other;
wherein a first projection of the spacer projected in a direction from the object-side surface to the image-side surface is different from a second projection of the spacer projected in another direction from the image-side surface to the object-side surface.

### Claim 9 (depends on 8)

The lens module of claim 8, wherein the first cutout comprises a first lower surface connecting the outer sidewall, and the first lower surface is flat; the second cutout comprises a second lower surface connecting the outer sidewall, and the second lower surface is concave.

### Claim 10 (depends on 9)

The lens module of claim 9, wherein the second cutout is positioned at a clockwise direction of the first cutout when looking at the object-side surface; the second cutout is positioned at a counterclockwise direction of the first cutout when looking at the image-side surface.

### Claim 11 (depends on 9)

The lens module of claim 9, wherein a first vertical line from a center point of the first lower surface to an optical axis of the spacer is substantially perpendicular to a second vertical line from a center point of the second lower surface to the optical axis.

### Claim 12 (depends on 8)

The lens module of claim 8, wherein the first cutout and the second cutout are located at two different diameters of the spacer.

### Claim 13 (depends on 8)

The lens module of claim 8, comprising an inner sidewall, wherein the inner sidewall is inclined in relative to the optical axis.

### Claim 14 (depends on 8)

The lens module of claim 8, wherein the outer sidewall is a cylindrical surface symmetrical about the optical axis of the spacer.