# US 8,787,715 B2 · Optical coupling lens

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- Number: US 8,787,715 B2
- Document ID: US8787715B2
- Status: Granted
- Kind: B2
- Application number: 13/726,671
- Filed: 2012-12-26
- Published: 2014-04-10
- Granted: 2014-07-22
- Earliest claimed: 2012-10-08
- Assignees: Hon Hai Precision Industry Co., Ltd.
- Applicants: Hon Hai Precision Industry Co., Ltd.
- Inventors: Yi Hung
- Web page: https://patentgrep.com/patent/US8787715B2

## CPC

- G02B 6/32: having lens focusing means {positioned between opposed fibre ends (with lens being an integral part of the single fibre end G02B6/262)}
- G02B 6/42: Coupling light guides with opto-electronic elements
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

An optical coupling lens includes a light incident surface, a light output surface perpendicular to the light incident surface, a reflection surface interconnected between the light incident surface and the light output surface, a first converging lens and a second converging lens formed on the light incident surface, and third converging lens formed on the light output surface and has a semi-cylindrical shape. Optical axes of the first converging lens and the second converging lens are perpendicular to the light incident surface and located on a common imaginary plane. A central axial plane of the third converging lens is perpendicular to the light output surface. An intersecting line between the central axial plane and the common imaginary plane is located on the reflection surface. A width of the third converging lens is equal to a diameter of each of the first converging lens and the second converging lens.

## Claims

### Claim 1

An optical coupling lens, comprising:
a light incident surface;
a light output surface perpendicular to the light incident surface;
a reflection surface obliquely interconnected between the light incident surface and the light output surface, an included angle between the reflection surface and the light incident surface being 45 degrees, and an included angle between the reflection surface and the light output surface being 45 degrees;
a first converging lens and a second converging lens formed on the light incident surface, optical axes of the first converging lens and the second converging lens being perpendicular to the light incident surface and located on a common imaginary plane;
a third converging lens formed on the light output surface and has a semi-cylindrical shape, a central axial plane of the third converging lens being perpendicular to the light output surface, an intersecting line between the central axial plane and the common imaginary plane being located on the reflection surface, a width of the third converging lens being equal to a diameter of each of the first converging lens and the second converging lens.

### Claim 2 (depends on 1)

The optical coupling lens as claimed in claim 1, wherein a lengthwise direction of the third lens is parallel to the common imaginary plane.

### Claim 3 (depends on 1)

The optical coupling lens as claimed in claim 1, wherein the first converging lens and the second converging lens are circular spherical lenses.

### Claim 4 (depends on 1)

The optical coupling lens as claimed in claim 1, wherein the common imaginary plane is parallel to the light output surface.