CN104422995A - Optical-coupling lens and photoelectric conversion module - Google Patents

Abstract

Translated fromChinese

本发明提供一种光耦合透镜。该光耦合透镜包括第一光学面、与该第一光学面平行的第二光学面、设置于该第一光学面上的第一汇聚透镜及设置于该第二光学面上的第二汇聚透镜。该第一汇聚透镜和该第二汇聚透镜一一对应。该光耦合透镜还包括开设于该第二光学面两侧的定位孔及插设于该定位孔中并与该定位孔形成紧配的定位柱，该定位柱由金属材料制成，该定位柱包括伸出该定位孔外的连接端。本发明还提供一种光电转换模块。

The invention provides an optical coupling lens. The optical coupling lens includes a first optical surface, a second optical surface parallel to the first optical surface, a first converging lens disposed on the first optical surface, and a second converging lens disposed on the second optical surface . There is a one-to-one correspondence between the first converging lens and the second converging lens. The optical coupling lens also includes a positioning hole opened on both sides of the second optical surface and a positioning post inserted in the positioning hole and forming a tight fit with the positioning hole. The positioning post is made of metal material. It includes a connecting end protruding from the positioning hole. The invention also provides a photoelectric conversion module.

Description

Optical coupling lens and photoelectric conversion module

Technical field

The present invention relates to a kind of optical coupling lens and a kind of photoelectric conversion module using this optical coupling lens.

Background technology

Photoelectric conversion module comprises printed circuit board (PCB) (pcb board) and optical coupling lens.Optical coupling lens is generally the manufacture of plastic ejection moulding.Optical coupling lens is generally formed with the pilot hole contraposition of the joints of optical fibre and the reference column be connected, thus connects photoelectric conversion module and the joints of optical fibre.But in use, optical coupling lens usually repeats to plug with the joints of optical fibre.After repeatedly plugging, it is larger that the reference column that plastics are formed produces because of tired the possibility ruptured.

Summary of the invention

In view of this, be necessary to provide a kind of optical coupling lens solved the problem.

In view of this, there is a need to provide a kind of photoelectric conversion module solved the problem.

A kind of optical coupling lens, comprises the first optical surface, second optical surface parallel with this first optical surface, the second plus lens of being arranged at the first plus lens on this first optical surface and being arranged on this second optical surface.This first plus lens and this second plus lens one_to_one corresponding.This optical coupling lens also comprises the pilot hole that is opened in these the second optical surface both sides and to be inserted in this pilot hole and to form the reference column of close-fitting with this pilot hole, and this reference column is made up of metal material, and this reference column comprises the link stretched out outside this pilot hole.

A kind of photoelectric conversion module, comprises pcb board, photoelectric conversion component and optical coupling lens.This photoelectric conversion component and this optical coupling lens are installed on this pcb board.This optical coupling lens comprises the first optical surface, second optical surface parallel with this first optical surface, the second plus lens of being arranged at the first plus lens on this first optical surface and being arranged on this second optical surface.This first plus lens and this photoelectric conversion component one_to_one corresponding, this first plus lens and this second plus lens one_to_one corresponding, this photoelectric conversion component, this first plus lens and this second plus lens form a light path successively jointly.This optical coupling lens also comprises the pilot hole that is opened in these the second optical surface both sides and to be inserted in this pilot hole and to form the reference column of close-fitting with this pilot hole, and this reference column is made up of metal material, and this reference column comprises the link stretched out outside this pilot hole.

The reference column of this optical coupling lens and photoelectric conversion module is made up of metal material, ensure that the physical strength of this reference column, also can not rupture after repeatedly plugging.

Accompanying drawing explanation

Fig. 1 is the schematic perspective view of the photoelectric conversion module of first embodiment of the invention.

Fig. 2 is the explosive view of the photoelectric conversion module shown in Fig. 1.

Fig. 3 is the explosive view of another angle of the photoelectric conversion module shown in Fig. 1.

Fig. 4 is that the photoelectric conversion module of Fig. 1 is along IV-IV to diagrammatic cross-section.

Fig. 5 is the diagrammatic cross-section of the photoelectric conversion module of second embodiment of the invention.

Main element symbol description

Photoelectric conversion module	100、200
		Pcb board	10
Loading end	11
		Photoelectric conversion component	13
Optical coupling lens	20、201
		Body	21
Bottom surface	210、212
		End face	211、214
Projection is installed	213
		Link	220
End face groove	223
		Second optical surface	225
Pilot hole	227、228
		Reference column	22
First plus lens	23
		Second plus lens	24

Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.

Embodiment

Refer to Fig. 1 to 4, there is disclosed the photoelectric conversion module 100 of first embodiment of the invention, comprise pcb board 10 and be installed on the optical coupling lens 20 on pcb board 10.

Pcb board 10 comprises a loading end 11, and this loading end 11 is provided with a line photoelectric conversion component 13.This photoelectric conversion component 13 can be photodiode, laser diode etc.This photoelectric conversion component 13 is arranged in straight line.

Optical coupling lens 20 comprises body 21, reference column 22, a line first plus lens 23 and a line second plus lens 24.

Body 21 is made with transparent plastic material, roughly in tabular, comprises one towards the bottom surface 210 of loading end 11 and a relative end face 211 parallel with bottom surface 210.This bottom surface 210 is the first optical surface, bottom surface 210 is formed and installs projection 213, installs projection 213 for optical coupling lens 20 is installed on pcb board 10.In the present embodiment, bottom surface 210 is formed with 4 and four corners that projection 213,4 installation projection 213 lays respectively at bottom surface 210 are installed.

This first plus lens 23 to be formed on this bottom surface 210 and and this photoelectric conversion component 13 one_to_one corresponding.

This end face 211 is parallel with this bottom surface 210, this end face 211 offers an end face groove 223, this end face groove 223 is rectangle, and body 21 also comprises one second optical surface 225, and this second optical surface 225 is positioned at the bottom of this end face groove 223 and parallel with this end face 211.This second plus lens 24 to be formed on this second optical surface 225 and and this first plus lens 23 one_to_one corresponding.In the present embodiment, this first plus lens 23 and this second plus lens 24 are convex lens.

This end face 211 is also formed with pilot hole 227.In the present embodiment, this pilot hole 227 is circular hole, and the number of this pilot hole 227 is two, and these two pilot holes 227 are positioned at the both sides of this end face groove 223 and penetrate this end face 211 and this bottom surface 210.

In present embodiment, this body 21, first plus lens 23 and the second plus lens 24 obtain by injection molding method is one-body molded.That is: the structure that is integrated of this body 21, first plus lens 23 and the second plus lens 24.

This reference column 22 is made up of metal material.In the present embodiment, the number of this reference column 22 is two, and this reference column 22 is roughly cylindrical.This reference column 22 to insert in this pilot hole 227 and forms close-fitting with this pilot hole 227, and this reference column 22 comprises and to stretch out from pilot hole 227 and the link 220 of this end face 211 projection relatively.This link 220 for inserting in the pilot hole of a joints of optical fibre (not shown), thus connects photoelectric conversion module 100 and the joints of optical fibre.

When seated, this installation projection 213 applies glue, then this optical coupling lens 20 is installed on pcb board 10, thus connect this optical coupling lens 20 and pcb board 10.

When operating, when this photoelectric conversion component 13 is photodiode, light signal from optical fiber to enter in this optical coupling lens 20 and is passed to the first corresponding plus lens 23 after this second plus lens 24 changes into parallel beam, then converged in corresponding photoelectric conversion component 13 by the first plus lens 23 of this correspondence, this photoelectric conversion component 13 changes this light signal into electric signal.

When this photoelectric conversion component 13 is laser diode, electric signal is become light signal by this photoelectric conversion component 13, this light signal to enter in this optical coupling lens 20 and is passed to the second corresponding plus lens 24 after this first plus lens 23 changes parallel beam into, then penetrates this optical coupling lens 20 from this second plus lens 24.

In the present invention, the reference column 22 of this optical coupling lens 20 is made up of metal material, ensure that the physical strength of this reference column 22, also can not rupture after repeatedly plugging.

Please refer to Fig. 5, there is disclosed the photoelectric conversion module 200 of second embodiment of the invention, this photoelectric conversion module 200 comprises an optical coupling lens 201, and this optical coupling lens 201 comprises bottom surface 212 and the end face 214 relative with bottom surface 212, end face 214 is formed with pilot hole 228.Photoelectric conversion module 200 and the difference of photoelectric conversion module 100 are pilot holes 228 is blind hole, and pilot hole 228 only penetrates end face 214 and do not penetrate bottom surface 212.

In a word; those skilled in the art will be appreciated that; above embodiment is only used to the present invention is described; and be not used as limitation of the invention; as long as within spirit of the present invention, the suitable change do above embodiment and change all drop within the scope of protection of present invention.

Claims (10)

Translated fromChinese

1.一种光耦合透镜，包括第一光学面、与该第一光学面平行的第二光学面、设置于该第一光学面上的第一汇聚透镜及设置于该第二光学面上的第二汇聚透镜；该第一汇聚透镜和该第二汇聚透镜一一对应；其特征在于：该光耦合透镜还包括开设于该第二光学面两侧的定位孔及插设于该定位孔中并与该定位孔形成紧配的定位柱，该定位柱由金属材料制成，该定位柱包括伸出该定位孔外的连接端。1. An optical coupling lens, comprising a first optical surface, a second optical surface parallel to the first optical surface, a first converging lens arranged on the first optical surface and a lens arranged on the second optical surface The second converging lens; the first converging lens corresponds to the second converging lens; it is characterized in that: the optical coupling lens also includes positioning holes opened on both sides of the second optical surface and inserted in the positioning holes And form a positioning column tightly matched with the positioning hole, the positioning column is made of metal material, and the positioning column includes a connecting end extending out of the positioning hole.2.如权利要求1所述的光耦合透镜，其特征在于：该光耦合透镜包括本体，该第一光学面为该本体的底面，该本体还包括与该底面相对的顶面；该顶面开设有顶面凹槽，该第二光学面位于该顶面凹槽中；该定位孔开设于该顶面上。2. The optical coupling lens according to claim 1, wherein the optical coupling lens comprises a body, the first optical surface is the bottom surface of the body, and the body also includes a top surface opposite to the bottom surface; the top surface A top surface groove is opened, and the second optical surface is located in the top surface groove; the positioning hole is opened on the top surface.3.如权利要求2所述的光耦合透镜，其特征在于：该本体、该第一汇聚透镜及该第二汇聚透镜为一体成型结构。3. The optical coupling lens as claimed in claim 2, wherein the body, the first converging lens and the second converging lens are integrally formed.4.如权利要求3所述的光耦合透镜，其特征在于：该本体、该第一汇聚透镜及该第二汇聚透镜均为塑料材料制成。4. The optical coupling lens as claimed in claim 3, wherein the body, the first converging lens and the second converging lens are all made of plastic materials.5.如权利要求1所述的光耦合透镜，其特征在于：该定位孔贯穿该第一光学面。5. The optical coupling lens as claimed in claim 1, wherein the positioning hole penetrates through the first optical surface.6.一种光电转换模块，包括PCB板、光电转换组件及光耦合透镜；该光电转换组件及该光耦合透镜安装于该PCB板上；该光耦合透镜包括第一光学面、与该第一光学面平行的第二光学面、设置于该第一光学面上的第一汇聚透镜及设置于该第二光学面上的第二汇聚透镜；该第一汇聚透镜和该光电转换组件一一对应，该第一汇聚透镜和该第二汇聚透镜一一对应，该光电转换组件、该第一汇聚透镜及该第二汇聚透镜依次共同形成一光路；其特征在于：该光耦合透镜还包括开设于该第二光学面两侧的定位孔及插设于该定位孔中并与该定位孔形成紧配的定位柱，该定位柱由金属材料制成，该定位柱包括伸出该定位孔外的连接端。6. A photoelectric conversion module, comprising a PCB board, a photoelectric conversion component, and an optical coupling lens; the photoelectric conversion component and the optical coupling lens are mounted on the PCB; the optical coupling lens comprises a first optical surface, and the first A second optical surface parallel to the optical surface, a first converging lens disposed on the first optical surface, and a second converging lens disposed on the second optical surface; the first converging lens corresponds to the photoelectric conversion component one by one , the first converging lens corresponds to the second converging lens one by one, and the photoelectric conversion assembly, the first converging lens and the second converging lens jointly form an optical path in sequence; it is characterized in that: the optical coupling lens also includes a The positioning holes on both sides of the second optical surface and the positioning posts that are inserted into the positioning holes and form a tight fit with the positioning holes, the positioning posts are made of metal materials, and the positioning posts include protruding out of the positioning holes connection end.7.如权利要求6所述的光电转换模块，其特征在于：该光耦合透镜包括本体，该第一光学面为该本体的底面，该本体还包括与该底面相对的顶面；该顶面开设有顶面凹槽，该第二光学面位于该顶面凹槽中；该定位孔开设于该顶面上。7. The photoelectric conversion module according to claim 6, wherein the optical coupling lens comprises a body, the first optical surface is a bottom surface of the body, and the body further comprises a top surface opposite to the bottom surface; the top surface A top surface groove is opened, and the second optical surface is located in the top surface groove; the positioning hole is opened on the top surface.8.如权利要求7所述的光电转换模块，其特征在于：该本体、该第一汇聚透镜及该第二汇聚透镜为一体成型结构。8 . The photoelectric conversion module according to claim 7 , wherein the body, the first converging lens and the second converging lens are integrally formed.9.如权利要求8所述的光电转换模块，其特征在于：该定位孔贯穿该第一光学面。9. The photoelectric conversion module according to claim 8, wherein the positioning hole penetrates through the first optical surface.10.如权利要求7所述的光电转换模块，其特征在于：该本体的底面上形成有安装凸块，该安装凸块安装于该PCB板上。10. The photoelectric conversion module according to claim 7, wherein a mounting bump is formed on the bottom surface of the body, and the mounting bump is mounted on the PCB.