CN103676028B - Optical coupling lens and optical communication module - Google Patents
Optical coupling lens and optical communication module Download PDFInfo
- Publication number
- CN103676028B CN103676028B CN201210340397.XA CN201210340397A CN103676028B CN 103676028 B CN103676028 B CN 103676028B CN 201210340397 A CN201210340397 A CN 201210340397A CN 103676028 B CN103676028 B CN 103676028B
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- Prior art keywords
- lens
- incidence
- plane
- optical
- holding section
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Abstract
The invention discloses an optical coupling lens which is used for realizing optical signal coupling between a light emitting element and a light receiving element. The optical coupling lens comprises a fixed device and a lens unit, wherein the fixed device is provided with a body; the body is provided with a through hole; the lens unit comprises an incident surface, an emitting surface and a reflecting surface; an included angle of 45 degrees is formed between the reflecting surface and the incident surface; the emitting surface is perpendicular to the incident surface; an optical signal emitted by the light emitting element enters the lens unit through the through hole and the incident surface, and is emitted from the emitting surface after being reflected by the reflecting surface; the light receiving element is used for receiving the optical signal emitted from the emitting surface. The invention further provides an optical communication module with the optical coupling lens.
Description
Technical field
The present invention relates to a kind of optical coupling lens and optical communication module.
Background technology
Existing optical communication module（Including light transmitting terminal, optical coupling lens and optical receiving end）It is passive all to adopt in technique
Formula encapsulates, because passive type encapsulation cannot be directed through micro- sem observation optical coupling lens and light transmitting terminal or optical receiving end contraposition
Situation so that light transmitting terminal after point adhesive curing, between optical coupling lens and optical receiving end there is deviation in a relative position, this
Contraposition deviation can make the coupling efficiency of optical communication module reduce.
Content of the invention
In view of this it is necessary to provide a kind of high optical coupling lens of optical signal coupling efficiency and optical communication module.
A kind of optical coupling lens, for making optical signal couple between photocell and light receiving element, described optocoupler
Close lens and include fixing device and lens unit, described fixing device has body, and described body has through hole, described lens list
Unit includes the plane of incidence, exit facet and reflecting surface, has 45 degree of angle, described outgoing between described reflecting surface and the described plane of incidence
The face vertically described plane of incidence, it is described through the entrance of the described plane of incidence that the optical signal that described photocell sends passes through described through hole
Mirror unit, by after described reflective surface, through described exit face, described light receiving element is used for receiving from described optical signal
Optical signal is set at exit facet.
A kind of optical communication module, including loading plate and light receiving element for carrying photocell, described optical coupling
Lens are used for making optical signal couple between described photocell and described light receiving element, and described optical coupling lens include solid
Determine device and lens unit, described fixing device is used for fixing described lens unit, and described fixing device has body, described
Body has through hole, and just to described through hole, described lens unit includes the plane of incidence, exit facet and reflecting surface to described photocell,
There is between described reflecting surface and the described plane of incidence 45 degree of angle, the described exit facet vertically described plane of incidence, described light transmitting
The optical signal that element sends passes through described through hole and enters described lens unit through the described plane of incidence, and optical signal is anti-by described reflecting surface
Through described exit face after penetrating, described light receiving element is used for receiving setting optical signal at described exit facet.
Compared to prior art, the optical coupling lens of the present embodiment and optical communication module to correct light with fixing device and to send out
Penetrate the alignment between element and lens unit, when the loading plate, fixing device and the lens unit that are provided with photocell
When three connects as one, optical signal arrives at light receiving element, now, photocell from photocell through lens unit
Central ray, the central shaft of the through hole of fixing device and lens unit optical axis online, the no bit errors that are located at same axle,
The transmission of optical signal is up to preferable coupling efficiency.
Brief description
Fig. 1 is the schematic diagram of embodiment of the present invention optical communication module.
Fig. 2 is the decomposing schematic representation of embodiment of the present invention optical communication module.
Main element symbol description
| Optical communication module | 100 |
| Optical coupling lens | 200 |
| Loading plate | 10 |
| Photocell | 20 |
| Fixing device | 30 |
| Body | 310 |
| Groove | 311 |
| Through hole | 312 |
| Lens unit | 40 |
| Main body | 410 |
| The plane of incidence | 411 |
| First lens | 4110 |
| Exit facet | 412 |
| Second lens | 4120 |
| Reflecting surface | 413 |
| First holding section | 414 |
| Second holding section | 415 |
| Light receiving element | 50 |
Following specific embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Specific embodiment
Refer to shown in Fig. 1, Fig. 2, optical communication module 100 provided in an embodiment of the present invention includes loading plate 10, light transmitting
Element 20, fixing device 30, lens unit 40 and light receiving element 50, wherein, the combination of fixing device 30 and lens unit 40
It is referred to as optical coupling lens 200.
Loading plate 10 is used for carrying photocell 20, it is of course also possible to provide electric energy to make photocell 20 work in the lump
Make.Loading plate 10 can be circuit board, for example, hardboard or soft board.Photocell 20 can for light emitting diode it is preferable that
For face type light emitting diode.
Fixing device 30 in optical coupling lens 200 be used for fix lens unit 40, fixing device 30 include body 310 with
And it is arranged on the groove 311 on body 310 and through hole 312, through hole 312 is square opening.Body 310 is substantially square structure, recessed
Groove 311 is connected with through hole 312, and groove 311 compares through hole 312 away from loading plate 10, and the width of groove 311 is more than through hole
312 width.The light that photocell 20 sends passes through through hole 312, groove 311 from fixing device 30 outgoing.
Certainly, in other embodiments, fixing device 30 can also only arrange the through hole 312 running through body 310.
Lens unit 40 is light-transmitting materials, and it includes a main body 410, and main body 410 has the plane of incidence 411, exit facet 412
With reflecting surface 413, the plane of incidence 411 intersected with exit facet 412 and reflecting surface 413 respectively, exit facet 412 vertical incidence face 411, instead
Penetrate the angle between face 413 and the plane of incidence 411 with 45 degree.First lens 4110 are had on the plane of incidence 411, on exit facet 412
There are the second lens 4120, the optical axis of the first lens 4110 is vertical with the optical axis of the second lens 4120 and intersects at reflecting surface 413
On.
Exit facet 412 and the plane of incidence 411 junction have the first holding section 414, and reflecting surface 413 is combined with the plane of incidence 411
Place has the second holding section 415, and the first holding section 414 and the second holding section 415 are used for fastening with fixing device 30 with fixation
Lens unit 40.When lens unit 40 is located in fixing device 30, the plane of incidence 411 is located in groove 311 and the first lens
4110 towards photocell 20.
Preferably, in order that lens unit 40 is firmly fixed in fixing device 30, can be in the first holding section 414 He
Glue coating between second holding section 415 and fixing device 30.
The light that photocell 20 sends passes through the through hole 312 of fixing device 30, groove 311 to be incident to lens unit 40
On the plane of incidence 411, then enter in lens unit 40 through the first lens 4110 on the plane of incidence 411, optical signal is by reflecting surface 413
Through the second lens 4120 outgoing on exit facet 412 after reflection, after received by light receiving element 50.
Light receiving element 50 can be photodiode or optical fiber.
When assembling optical communication module 100, first fixing device 30 is placed on loading plate 10 and makes photocell 20
In through hole 312, check whether photocell 20 is online positioned at the center of through hole 312, and adjustment is solid with instruments such as microscopes
Determine the position of device 30 until photocell 20 is located at the center of through hole 312 online, now on loading plate 10, make register guide
Note.Then, the plane of incidence 411 of lens unit 40 is assembled in groove 311 towards fixing device 30, at through hole 312 with
The instruments such as microscope judge the relation between the first lens 4110 and through hole 312, until the central shaft of the first lens 4110 is located at
The center of through hole 312 is online, is fixed fixing device 30 with lens unit 40 by dispensing mode.Finally, according to carrying
Alignment mark on plate 10, fixing device 30 is placed in loading plate 10, and fixing device 30 is fixed on carrying by dispensing mode
On plate 10.
From above-mentioned assembling process, optical coupling lens 200 with fixing device 30 to correct photocell 20 with thoroughly
Alignment between mirror unit 40, when the loading plate 10, fixing device 30 and the lens unit 40 that are provided with photocell 20
When three connects as one, optical signal sends from photocell 20 and arrives at light receiving element 50 through lens unit 40, now,
First lens 4110 of the central ray of photocell 20, the central shaft of through hole 312 of fixing device 30 and lens unit 40
Optical axis online, the no bit errors that are located at same axle, the transmission of optical signal is up to preferable coupling efficiency.
It is understood that those skilled in the art also can do other changes etc. in present invention spirit, as long as it is not inclined
Technique effect from the present invention.These changes done according to present invention spirit, all should be included in the required guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of optical coupling lens, for making optical signal couple between photocell and light receiving element, described optical coupling
Lens include fixing device and lens unit, and described fixing device has body, and described body has and is interconnected and the side of extension
To the through hole being parallel to each other and groove, described lens unit includes the plane of incidence, exit facet and reflecting surface, described reflecting surface with described
There is between the plane of incidence 45 degree of angle, the described exit facet vertically described plane of incidence, the described plane of incidence is provided with the first lens, institute
The plane of incidence stating lens unit is assembled in described groove, and described through hole is used for described photocell and described first lens
Assembling contraposition, the central shaft of the central ray of described photocell, the optical axis of described first lens and described through hole is positioned at same
On one axis, the optical signal that described photocell sends passes through described through hole and enters described lens unit through the described plane of incidence,
By after described reflective surface, through described exit face, described light receiving element is used for receiving to go out from described exit facet optical signal
The optical signal penetrated.
2. optical coupling lens as claimed in claim 1 are it is characterised in that described exit facet is provided with the second lens.
3. optical coupling lens as claimed in claim 1 are it is characterised in that the described plane of incidence and reflecting surface junction have first
Holding section, described exit facet and described plane of incidence junction have the second holding section, described first holding section and the second holding section
It is used for fastening with described fixing device with fixing described lens unit.
4. optical coupling lens as claimed in claim 3 it is characterised in that described first holding section and the second holding section with described
It is coated with glue between fixing device.
5. a kind of optical communication module, including the loading plate for carrying photocell, optical coupling lens and light receiving element, institute
State optical coupling lens for making optical signal couple between described photocell and described light receiving element, described optical coupling is saturating
Mirror includes fixing device and lens unit, and described fixing device is used for fixing described lens unit, and described fixing device has this
Body, described body has and is interconnected and through hole that bearing of trend is parallel to each other and groove, and described photocell is just to described
Through hole, described lens unit includes the plane of incidence, exit facet and reflecting surface, has 45 degree between described reflecting surface and the described plane of incidence
Angle, the described exit facet vertically described plane of incidence, the described plane of incidence is provided with the first lens, the plane of incidence of described lens unit
It is assembled in described groove, described through hole is used for the assembling contraposition of described photocell and described first lens, described light is sent out
The central shaft penetrating the central ray, the optical axis of described first lens and described through hole of element is located on same axis, and described light is sent out
Penetrate the optical signal that element sends to incide on the described plane of incidence by described through hole, enter described lens list through the described plane of incidence
Unit, by after described reflective surface, through described exit face, described light receiving element is used for receiving from described outgoing optical signal
Optical signal is set at face.
6. optical communication module as claimed in claim 5 is it is characterised in that described exit facet is provided with the second lens.
7. optical communication module as claimed in claim 5 is it is characterised in that the described plane of incidence and reflecting surface junction have first
Holding section, described exit facet and described plane of incidence junction have the second holding section, described first holding section and the second holding section
It is used for fastening with described fixing device with fixing described lens unit.
8. optical communication module as claimed in claim 7 it is characterised in that described first holding section and the second holding section with described
It is coated with glue between fixing device.
9. optical communication module as claimed in claim 5 is it is characterised in that described loading plate is circuit board.
10. optical communication module as claimed in claim 5 is it is characterised in that described light receiving element is photodiode or light
Fine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340397.XA CN103676028B (en) | 2012-09-14 | 2012-09-14 | Optical coupling lens and optical communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340397.XA CN103676028B (en) | 2012-09-14 | 2012-09-14 | Optical coupling lens and optical communication module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103676028A CN103676028A (en) | 2014-03-26 |
| CN103676028B true CN103676028B (en) | 2017-02-08 |
Family
ID=50314135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210340397.XA Expired - Fee Related CN103676028B (en) | 2012-09-14 | 2012-09-14 | Optical coupling lens and optical communication module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103676028B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018058859A1 (en) * | 2016-09-30 | 2018-04-05 | Source Photonics (Chengdu) Company Limited | Optical subassembly for an optical receiver, optical receiver and transceiver comprising the same, and methods of making and using the same |
| US10073227B1 (en) * | 2017-06-05 | 2018-09-11 | Mellanox Technologies, Ltd. | System and method for characterizing the location of optical components in an optical module |
| US10811839B1 (en) * | 2019-04-18 | 2020-10-20 | Applied Optoelectronics, Inc. | TO can laser assembly with off-center lens cap and an optical transceiver or transmitter implementing same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6625372B1 (en) * | 1999-11-15 | 2003-09-23 | Axsun Technologies, Inc. | Mounting and alignment structures for optical components |
| US6888988B2 (en) * | 2003-03-14 | 2005-05-03 | Agilent Technologies, Inc. | Small form factor all-polymer optical device with integrated dual beam path based on total internal reflection optical turn |
| JP3955065B2 (en) * | 2005-01-18 | 2007-08-08 | シャープ株式会社 | Optical coupler |
| JP2007334166A (en) * | 2006-06-19 | 2007-12-27 | Suzuka Fuji Xerox Co Ltd | Optical module |
| JP2008225339A (en) * | 2007-03-15 | 2008-09-25 | Hitachi Cable Ltd | Optical system connection structure, optical member, and optical transmission module |
| CN102667565B (en) * | 2009-12-22 | 2015-05-13 | 恩普乐股份有限公司 | Lens array and optical module provided therewith |
-
2012
- 2012-09-14 CN CN201210340397.XA patent/CN103676028B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103676028A (en) | 2014-03-26 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20170208 Termination date: 20170914 |