# US 2013/0155495 A1 · Lens for absorbing infrared light and lens module having same

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- Number: US 2013/0155495 A1
- Document ID: US20130155495A1
- Status: Published application
- Kind: A1
- Application number: 13/426,625
- Filed: 2012-03-22
- Published: 2013-06-20
- Earliest claimed: 2011-12-15
- Assignees: Hon Hai Precision Industry Co., Ltd.
- Inventors: CHUNG-PEI WANG
- Web page: https://patentgrep.com/patent/US20130155495A1

## CPC

- G02B 3/00: Simple or compound lenses
- G02B 5/208: {for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation}
- G02B 1/115: Multilayers
- G02B 7/021: {for more than one lens}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A lens module includes a lens barrel and a lens received in the lens barrel. The lens includes an image-side surface and an object-side surface, and is configured for converging or diverging light from the object-side surface to the image-side surface. The lens is made by a composition of raw materials which absorb the infrared element of the light passing therethrough.

## Claims

### Claim 1

A lens, comprising:
an image-side surface and an object-side surface opposite to the image-side surface;
wherein the lens is made by an composition of raw materials which absorbing infrared light constituent of lights passing therethrough.

### Claim 2 (depends on 1)

The lens of claim 1, wherein the composition of raw materials comprises: 40-75 wt % of P2O5, 10-28 wt % of Al2O3, 3-8.5 wt % of CuO, and 0-5 wt % of B2O3.

### Claim 3 (depends on 2)

The lens of claim 2, wherein the total weight of P2O5 and Al2O3 is over 70 wt %.

### Claim 4 (depends on 1)

The lens of claim 1, wherein the lens is spherical or aspherical.

### Claim 5

A lens module, comprising:
a lens barrel; and
a lens received in the lens barrel, and comprising an image-side surface and an object-side surface opposite to the image-side surface;
wherein the lens is made by an composition of raw materials which absorbing infrared light constituent of lights passing therethrough.

### Claim 6 (depends on 5)

The lens module of claim 5, wherein the composition of raw materials comprises: 40-75 wt % of P2O5, 10-28 wt % of Al2O3, 3-8.5 wt % of CuO, and 0-5 wt % of B2O3.

### Claim 7 (depends on 6)

The lens module of claim 6, wherein the total weight of P2O5 and Al2O3 is over 70 wt %.

### Claim 8 (depends on 5)

The lens module of claim 5, wherein the lens is spherical or aspherical.

### Claim 9 (depends on 5)

The lens module of claim 5, wherein the lens comprises an anti-reflection film coated on the image-side surface.

### Claim 10 (depends on 5)

The lens module of claim 5, wherein the lens comprises an infrared filtering film coated on the object-side surface.