Optical signal coupling assembly

Patent metadata

Field	Value
Publication number	US-2016341918-A1
Application number	US-201514840306-A
Country	US
Kind code	A1
Filing date	Aug 31, 2015
Priority date	May 22, 2015
Publication date	Nov 24, 2016
Grant date	—

Abstract

An optical communication assembly includes a PCB, a first optical coupling module, a light deflection module, and a second optical coupling module. The PCB includes a plurality of light emitting elements emitting different color light signals. The first optical coupling module includes a plurality of first lenses corresponding with light emitting element. The light deflection module includes a plurality of light deflection elements corresponding with optical coupling lenses. The light deflection element includes a first reflecting surface reflecting light signal, and a plurality of dichroic surfaces reflecting light signal from the first optical coupling lens and transmitting the light signal from a front light deflection element. The second optical coupling module includes a second lens and an optical fiber, color light signals emitted from the light emitting elements are reflected and transmitted by the light deflection module and then altogether coupled into the optical fiber.

First claim

What is claimed is:

1 . An optical communication assembly comprising:
a printed circuit board having a light emitting member, the light emitting member comprising a plurality of light emitting elements, each of the plurality of light emitting elements emitting a single color light signal; a first optical coupling module comprising a plurality of first optical coupling lenses, each of the plurality of first optical coupling lens corresponding with each of the plurality of light emitting elements; a light deflection module comprising a plurality of light deflection elements arranging in order, each of the plurality of light deflection element corresponding with each of the plurality of optical coupling lenses; a first one of the plurality of the light deflection elements comprising a first reflecting surface and remaining ones of the plurality of light deflection elements each comprising a dichroic surface, wherein the first reflecting surface being parallel with the dichroic surface; the first reflecting surface being configured to reflect light signal from one of the first optical coupling lenses; each dichroic surface being configured to reflect light signal from one of the first optical coupling lenses and transmit the light signal from a front light deflection element; and a second optical coupling module comprising a second optical coupling lens and an optical fiber aligned with the second optical coupling lens, color light signals emitted from the light emitting elements being coupled by the corresponding first optical coupling lens, reflected and transmitted by the light deflection module and then coupled into the single optical fiber.

2 . The optical communication assembly of claim 1 , wherein the first optical coupling module is fixed on the printed circuit board, the first optical coupling module comprises a base and a side wall connected with the base, the base and the side wall being injected in a mold.

3 . The optical communication assembly of claim 2 , wherein the base is made from transparent plastic and substantially cuboid, the base comprises a bottom surface, an opposite top surface, and an outer side surface perpendicularly connecting with the bottom surface and the top surface, the side wall connects with the top surface and extends away from the top surface.

4 . The optical communication assembly of claim 3 , wherein the bottom surface defines a plurality of receiving cavities spacing apart each other, each receiving cavity comprises a bottom end surface, and each bottom end surface is arranged with the first optical coupling lens.

5 . The optical communication assembly of claim 3 , wherein the side wall and the top surface together form a receiving space, the bottom of the receiving space defines a plurality of limiting areas, and the limiting areas are configured to place the light deflection module.

6 . The optical communication assembly of claim 5 , wherein the light deflection module comprises a first light deflection element, a second light deflection element and a third light deflection element, the first light deflection element, the second light deflection element and the third light deflection element are substantially rectangular prism shape and have a same size with other.

7 . The optical communication assembly of claim 6 , wherein the first light deflection element comprises the first reflecting surface, the second light deflection element comprises a first dichroic surface, the third light deflection element comprises a second dichroic surface, the first reflecting surface is used for reflecting the first color light signal λ1 emitting from the corresponding first optical coupling lens, the first dichroic surface is configured for transmitting the first color light signal λ1 and reflecting the second color signal light λ2 emitting from the corresponding first optical coupling lens, the second dichroic surface is used for transmitting the first and the second color light signal λ1 and λ2, and reflecting the third color light signal λ3 emitting from the corresponding first optical coupling lens.

8 . The optical communication assembly of claim 7 , wherein an included angle between the first reflecting surface and a rectangular surface of the first light deflection element is θ1, included angle between the first dichroic surface and the rectangular surface of the second light deflection element is θ2, included angle between the second dichroic surface and the rectangular surface of the third light deflection element is θ3, and θ1=θ2=θ3=45°.

9 . The optical communication assembly of claim 7 , further comprising an optical matching glue, wherein the optical matching glue is filled in a space formed between the first light deflection element and the second light deflection element, and a space formed between the second light deflection element and the third light deflection element, and a refractive index of the optical matching glue is the same or similar with a refraction index of the first, the second and the third light deflection element.

10 . The optical communication assembly of claim 9 , wherein the second optical coupling module is substantially a step portion shape, and comprises a first portion and a second portion connected with the first portion, the first portion comprises two second positioning portions engaging with the first positioning portions.

11 . The optical communication assembly of claim 10 , wherein the second portion comprises a first side surface and a second side surface opposite to the first side surface, and the first side surface faces toward the outer side surface, the first side surface is arranged with a second optical coupling lens at central thereof, and the second side surface is arranged with a receiving groove for receiving the optical fiber, and the receiving groove is aligned with the second optical coupling lens.

12 . The optical communication assembly of claim 11 , further comprising a light reflecting module being arranged on the top surface and leaning against the light deflection module, wherein the light reflecting module comprises a plurality of light reflecting portions corresponding with the light reflecting deflection elements, the third light reflecting portions are substantially rectangular prism shape, each light reflecting portion comprises a light reflecting surface, and the reflecting surface is configured to reflecting one part of light signal from the light deflection module.

13 . The optical communication assembly of claim 12 , wherein a size of the light reflecting portion is smaller than a size of the corresponding light deflection portion.

14 . The optical communication assembly of claim 12 , further comprising a plurality of third optical coupling lenses being arranged in each the receiving cavities and aligned with each light detecting element, wherein each the third optical coupling lens is configured to converge and collimate light signal from the reflecting surface of each the light reflecting portion.

15 . The optical communication assembly of claim 12 , further comprising plurality of light detecting elements being arranged on the printed circuit board, wherein each light detecting element is corresponded to each light emitting member, and the light detecting element is configured to receive the other part of the first color light signal.

16 . The optical communication assembly of claim 12 , wherein the control chip is an integrated chip, and the control chip is configured to drive the light emitting element to emit light, process and analyze the light signal received by the light detecting

Assignees

• Hon Hai Prec Ind Co Ltd

Inventors

• Chang Jen-Tsorng

Classifications

• G02B6/2938

  for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM · CPC title

• G02B6/4257

  having a supporting carrier or a mounting substrate or a mounting plate (G02B6/3648 takes precedence) · CPC title

• G02B6/4214 Primary

  the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device (G02B6/4246 takes precedence) · CPC title

• G02B6/4215 Primary

  the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers (G02B6/4246 takes precedence) · CPC title

• G02B6/4286

  Optical modules with optical power monitoring · CPC title