CN101079535A - Optical module - Google Patents
Optical module Download PDFInfo
- Publication number
- CN101079535A CN101079535A CN 200710105211 CN200710105211A CN101079535A CN 101079535 A CN101079535 A CN 101079535A CN 200710105211 CN200710105211 CN 200710105211 CN 200710105211 A CN200710105211 A CN 200710105211A CN 101079535 A CN101079535 A CN 101079535A
- Authority
- CN
- China
- Prior art keywords
- light
- optical module
- emitting component
- lens face
- reflecting surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The present invention provides an optical module which allows the manufacturing process to be simplified. An optical module 100 includes: a light-emitting element 30; an optical member 50 having a primary lens surface 52 for focusing the light emitted from the light-emitting element, a reflecting surface 56 for reflecting part of the light and passing another part of the light focused by the primary lens surface 52 and a refracting surface 54 for passing the light reflected by the reflecting surface; and a photodetector element 40 for receiving the light passed through the refracting surface, wherein the primary lens surface and refracting surface are coaxial surfaces of revolution while the primary lens surface has a protruded section at the center thereof, while the refracting surface is formed in a region which surrounds the primary lens surface in a plan view.
Description
Technical field
The present invention relates to a kind of optical module.
Background technology
The such light-emitting component of image surface emitting laser has the characteristic according to the condition variation light output of ambient temperature etc.Therefore, have following situation: possess photo detector in the optical module that uses light-emitting component, wherein, this photo detector has a part that is used to detect from the laser of light-emitting component ejaculation, and monitors the light measuring ability of light output valve.Part guiding photo detector for the laser that will penetrate from light-emitting component need possess a plurality of lens or the reflecting surface optics of structure like this.But, exist in order to make the optical module that comprises such optics, not only must prepare a plurality of opticses, but also have the complicated problem of manufacturing process.
Patent documentation 1: TOHKEMY 2004-319877 communique
Summary of the invention
The object of the present invention is to provide a kind of optical module that can simplify manufacturing process.
The optical module that the present invention relates to comprises light-emitting component; Optics comprises first lens face that the light of above-mentioned light-emitting component emission is assembled, reflects the part of the light that this first lens face assembles and makes reflecting surface that other parts see through and the plane of refraction that sees through the light of above-mentioned reflecting surface reflection; And photo detector, receive the light that sees through above-mentioned plane of refraction, wherein, above-mentioned first lens face and above-mentioned plane of refraction are the coaxial surfacess of revolution, above-mentioned first lens face has protuberance on central part, overlook when observing, and above-mentioned plane of refraction is formed on the zone that surrounds above-mentioned first lens face.
In the optical module that the present invention relates to, optics is owing to comprising first lens face and the plane of refraction that is made of the coaxial surfaces of revolution, so can simplify the manufacturing process of optics.
In the optical module that the present invention relates to, above-mentioned plane of refraction can be used as second lens face of the light of assembling above-mentioned reflecting surface reflection and plays a role.
In the optical module that the present invention relates to, above-mentioned plane of refraction can be along the shape of circular cone side.
In the optical module that the present invention relates to, above-mentioned optics can also comprise the 3rd lens face that the light that sees through above-mentioned reflecting surface is assembled.
In the optical module that the present invention relates to, above-mentioned optics can also comprise the sleeve that is used to support optical fiber, and wherein, the light that above-mentioned optical fiber is used to the 3rd lens face is assembled is injected.
In the optical module that the present invention relates to, above-mentioned light-emitting component and above-mentioned photo detector can be supported by same substrate.
In the optical module that the present invention relates to, above-mentioned plane of refraction can be in abutting connection with the periphery of above-mentioned first lens face.
In the optical module that the present invention relates to, the optical axis that sees through the light of above-mentioned first lens face can have different directions with the optical axis of the light that sees through above-mentioned plane of refraction.
In the optical module that the present invention relates to, to overlook when observing, above-mentioned first lens face can be rounded.
In the optical module that the present invention relates to, above-mentioned optics can have recess between above-mentioned first lens face and above-mentioned reflecting surface, and wherein, above-mentioned recess is set on the direction with the optical axis approximate vertical of the light of above-mentioned light-emitting component emission.
In the optical module that the present invention relates to, above-mentioned reflecting surface can constitute the inwall of above-mentioned recess.
In the optical module that the present invention relates to, the inwall of above-mentioned recess can comprise bottom, above-mentioned reflecting surface, the see through face relative with this reflecting surface, and above-mentioned reflecting surface can be with relative away from above-mentioned bottom, wide more at interval mode more with the above-mentioned face that sees through.
In the optical module that the present invention relates to, the above-mentioned optical axis that can be not orthogonal to the light of above-mentioned light-emitting component emission through face.
That is, the above-mentioned face that sees through can have the angle of less than 90 degree with respect to the optical axis of the light of above-mentioned light-emitting component emission.The above-mentioned face that sees through can have angle greater than 90 degree with respect to the optical axis of the light of above-mentioned light-emitting component emission.
In the optical module that the present invention relates to, above-mentioned photo detector can have the function of supervision by the light output of light-emitting component generation, and can export according to the light that above-mentioned photo detector monitors, adjusts the electric current that offers above-mentioned light-emitting component.
Description of drawings
Fig. 1 be pattern show the profile of the optical module that present embodiment relates to.
Fig. 2 be pattern show the end view of the optical module that present embodiment relates to.
Fig. 3 be pattern show the enlarged drawing of the optical module that present embodiment relates to.
Fig. 4 be pattern show the vertical view of the optical module that present embodiment relates to.
Fig. 5 be pattern show the enlarged drawing of the optical module that present embodiment relates to.
Fig. 6 be pattern show the profile of the optical module that first variation relates to.
Fig. 7 be pattern show the profile of the optical module that second variation relates to.
Fig. 8 be pattern show the enlarged drawing of the optical module that the 3rd variation relates to.
Embodiment
Below, with reference to the accompanying drawings the preferred embodiments of the present invention are described.
Fig. 1 be pattern show the profile of the optical module 100 that present embodiment relates to.Fig. 2 be pattern show the end view of the optical module 100 that present embodiment relates to.Fig. 1 is the schematic diagram of the I-I section of Fig. 2.
Light-emitting component 30 sends laser.Light-emitting component 30 can for example be a surface emitting laser diode.Light-emitting component 30 is set at the inside of assembly 10 described later.As long as photo detector 40 can convert the light that receives to electric current, can be pin photodiode for example.Photo detector 40 is set at the inside of assembly 10, and is arranged on on the one side with light-emitting component 30.In the present embodiment, photo detector 40 and light-emitting component 30 are set on the same substrate 32.Substrate 32 is provided with distribution (not diagram), is used to be electrically connected each light-emitting component 30 and lead 12, and is electrically connected each photo detector 40 and lead 12.
At this, the output of the light of light-emitting component 30 mainly is to be determined by the bias voltage that imposes on light-emitting component 30.Especially, the light of light-emitting component 30 output produces bigger variation because of life-span of the environment temperature of light-emitting component 30 and light-emitting component 30 different.Therefore, on light-emitting component 30, need to keep the light output of regulation.
So, in the optical module 100 that present embodiment relates to, monitor the light output of light-emitting component 30, and according to the magnitude of voltage that is applied to the current value adjustment of taking place on the photo detector 40 on the light-emitting component 30.Thus, can adjust the current value that flows through in the light-emitting component 30, and, the light output of regulation in light-emitting component 30, can be kept.Be to use the external electronic circuits (drive circuit: not shown) that is electrically connected with lead 12 and implemented to the control of the light output that is applied to the magnitude of voltage feedback light emitting element 30 on the light-emitting component 30.
That is, photo detector 40 can monitor the light output of light-emitting component 30 by converting electric current to by the light that light-emitting component 30 produces.Particularly, photo detector 40 absorbs the part of the light that is produced by light-emitting component 30, and passes through the light generation optical excitation of this absorption, thereby electronics and hole take place.And by the electric field that applies from element-external, electronics and hole be by being moved to electrode respectively, thereby be converted into electric current.External electronic circuits can determine to impose on the magnitude of voltage of light-emitting component 30 according to this current value.So, monitor the light output of light-emitting component 30 usually by photo detector 40, can on light-emitting component 30, keep the light output of regulation.
Below, will use Fig. 1 to Fig. 5 that the connector 50 that has lens is described in detail.Fig. 3 is the enlarged drawing of the area I II of Fig. 1.Fig. 4 be from light-emitting component 30 sides (below) observe Fig. 3 have the connector 50 of lens the time vertical view.Fig. 5 is the enlarged drawing of the regional V of Fig. 1.The connector 50 that has lens comprises first lens face 52, reflecting surface 56, plane of refraction (second lens face) the 54, the 3rd lens face 58.
Reflecting surface 56 reflects the part of the light of being assembled by first lens face 52, and other parts are seen through.That is, reflecting surface 56 has the function as semi-transparent semi-reflecting lens.There is no particular limitation for the ratio that sees through and reflect, but the large percentage that preferably sees through, and the ratio of reflection can be for about several percentages.Between the reflecting surface 56 and first lens face 52, have the space.Because this space and have refractive index difference between the connector 50 of lens is so can make the light reflection by reflecting surface 56.
The light of plane of refraction 54 penetration faces 56 reflections.And, plane of refraction 54 also can the convergence reflex face light of 56 reflections.Plane of refraction 54 be set at first lens face 52 around, and as shown in Figures 3 and 4, when overlooking when observing, the shape of plane of refraction 54 can be to serve as the surfaces of revolution of axle rotation straight line or curve with above-mentioned straight line A in the form of a ring.Being shaped as to be injected into photo detector 40 and not to be injected into light-emitting component 30 such shapes by the light of reflecting surface 56 reflection of plane of refraction 54 get final product, do not limit especially, and for example can not the shape of the side of circular cone.Have such shape by plane of refraction 54, can converging light on the circumferencial direction of circular cone, and can improve the supervision precision of photo detector 40.
The light that the 3rd lens face 58 convergence reflex faces 56 see through.Particularly, the light that the 3rd lens face 58 convergence reflex faces 56 see through is so that assembled at the bottom surface (end of optical fiber 72) of sleeve 60 glazing.Thus, can improve the coupling efficiency of light-emitting component 30 and optical fiber described later 72.
The connector 50 that has lens also comprises sleeve 60.Sleeve 60 is set on the position relative with the 3rd lens face 58, and supporting optical fiber 72.Sleeve 60 can for example form along optical axis direction, by inserting lasso (ferrule) 70, can support optical fiber 72.
The connector 50 that has lens also comprises first recess 64.First recess 64 is being fallen to be arranged on the position relative with sleeve 60.By inboard assembly 10 is set, thereby in the connector 50 that has lens, embeds assembly 10 at first recess 64.Also can pass through on the inwall of first recess 64, to apply sticker etc., thus fixation kit 10.The flat shape of first recess 64 is the shapes along assembly 10 sides, for example can be rectangle.
The connector 50 that has lens also comprises second recess 62.Second recess 62 is formed on the direction with the optical axis approximate vertical, have on the side of connector 50 of lens.As shown in Figure 1, preferably second recess 62 is arranged on the position with respect to the symmetry of optical axis.Thus, when making optical module 100 or after making, holding member can have the connector 50 of lens by 62 clampings of second recess.
The connector 50 that has lens also comprises the 3rd recess 66.The 3rd recess 66 is set between first lens face 52 and the reflecting surface 56.The 3rd recess 66 can see through its inner mode with light and be set on the direction with the optical axis approximate vertical.The part of the inwall of the 3rd recess 66 can be used as reflecting surface 56 and plays a role.In other words, reflecting surface 56 can constitute the part of the inwall of the 3rd recess 66.Thus, the resin material and the interface between the air that can make conduct have the connector 50 of lens plays a role as reflecting surface 56.
More particularly, the inwall of the 3rd recess 66 comprises reflecting surface 56, bottom 55, the see through face 57 relative with reflecting surface 56.Reflecting surface 56 with see through face 57 with relative away from bottom 55, wide more at interval mode more.That is, as shown in Figure 5, see through the vertical line C and the reflecting surface 56 formed angle θ of face 57
1Can be smaller or equal to 90 °.Thus, when for example having the connector 50 of lens, can be easy to extract the connector 50 that has lens from metal by the metal making.And, see through face 57 owing on the resin material and the interface between the air that are set at as the connector 50 that has lens, thus the same with reflecting surface 56, see through the part that face 57 reflects the light of being assembled by first lens face 52, and other parts are seen through.The ratio that sees through and reflect has no particular limits, the large percentage that preferably sees through, and the ratio of reflection is the smaller the better.Angle between the optical axis B of the light that will assemble through face 57 and first lens face 52 is decided to be angle θ
2, angle θ
2Preferably not 90 °, for example as shown in Figure 5, can be bigger than 90 °.Because angle θ
2It or not 90 °, so can prevent to return light-emitting component 30 by the light 59 of the face of seeing through 57 reflections.And, because angle θ
2Greater than 90 °, so can prevent owing to causing light 59 to inject photo detector 40 towards the side opposite with photo detector 40 by the light 59 that sees through face 57 reflections.
The optical module 100 that relates to according to present embodiment, comprise first lens face 52, reflecting surface 56, plane of refraction 54 owing to have connector 50 one of lens, as long as, need not in assembly 10, to be provided with semi-transparent semi-reflecting lens etc. and just can make photo detector 40 monitor light-emitting components 30 so this connector 50 that has lens is installed on light-emitting component 30 and the photo detector 40.
And in the optical element 100 that present embodiment relates to, the periphery of adjacency first lens face 52 is provided with plane of refraction 54.Thus, light-emitting component 30 and photo detector 40 can be configured on the adjoining position.And, since can make light with reflecting surface 56 approximate vertical directions on inject, so can reduce the polarisation interdependence of light reflection.Therefore, the supervision precision of photo detector 40 can be improved, and the reliability of optical module 100 can be improved.
And in the optical module 100 that present embodiment relates to, first lens face 52 and plane of refraction 54 are coaxial surfacess of revolution.Thus, employed metal can be handled by cutting at one time and make during the lensed connector 50 of forming belt, thereby can simplify manufacturing process.
Below, first variation that present embodiment is related to describes.Fig. 6 be pattern show the profile of the optical module 200 that first variation relates to, it is corresponding with Fig. 1.
The shape of the connector that has lens of the optical module 200 that first variation relates to and the optical module 100 that present embodiment relates to are different.Particularly, the connector 150 that has lens comprise on this aspect of sleeve that is used to insert lasso etc. different with the connector 50 that has lens.
And the connector that has lens 150 that first variation relates to also comprises the 4th lens face 158 on the basis of the 3rd lens face 58.The 4th lens face 158 is the same with the 3rd lens face 58, can assemble the light of penetration face 56.
For the structure of the optical module 200 beyond above-mentioned, thus since with the identical explanation of omitting of structure of above-mentioned optical module 100 to it.
Below, second variation that present embodiment is related to describes.Fig. 7 shows the profile of the connector that has lens 250 that second variation relates to, and it is corresponding with Fig. 3.The shape of the plane of refraction 254 of the connector that has lens 250 that second variation relates to is different with the connector that has lens 50 that present embodiment relates at this point of shape that is not the circular cone side.As shown in Figure 3, in the connector 50 that has lens, plane of refraction 54 is to serve as the surfaces of revolution of axle rotation straight line with straight line A, but in contrast, and as shown in Figure 7, the plane of refraction 254 that has in the connector 250 of lens is to be the surfaces of revolution of a rotating curve with straight line A.And as shown in Figure 7, plane of refraction 254 is owing to have slow convex form, thus be not only circumferencial direction, even also can converging light on the direction vertical with circumference.
For the structure of the connector that has lens 250 beyond above-mentioned, thus since with the identical explanation of omitting of structure of the above-mentioned connector that has lens 50 to it.
Below, the 3rd variation that present embodiment is related to describes.Fig. 8 shows the profile of the connector that has lens 350 that the 3rd variation relates to, and it is corresponding with Fig. 5.The connector that has lens 350 that the 3rd variation relates to is at the formed angle θ of optical axis B of the light that sees through face 57 and 52 convergences of first lens face
3Different less than the connector that has lens 50 that relates to present embodiment on 90 ° of these aspects.
As mentioned above, describe the present invention, but the present invention is not limited to the above embodiments.For example, the present invention includes and the substantive identical formation of the formation of explanation in an embodiment (for example, effect, method and the formation that comes to the same thing, perhaps purpose and the formation that comes to the same thing).And the present invention also comprises the formation of the non-intrinsically safe part in the structure of having replaced the present embodiment explanation.And the present invention also comprises the formation of bringing into play the same function effect with the formation of present embodiment explanation, perhaps, can realize the formation of identical purpose.And the present invention also is included in the formation that is added with known technology in the illustrated formation of present embodiment.
Description of reference numerals
10 assemblies, 11 frameworks
12 leads, 20 covers
30 light-emitting components, 32 substrates
40 photo detectors 50 are with lensed connector
52 first lens faces, 54 planes of refraction (second lens face)
55 bottoms, 56 reflectings surface
57 see through face 58 the 3rd lens face
60 sleeves, 62 second recesses
64 first recesses 66 the 3rd recess
70 lassos, 72 optical fiber
100 optical modules 158 the 4th lens face
200 optical modules
Claims (15)
1. optical module comprises:
Light-emitting component;
Optics comprises first lens face that the light of described light-emitting component emission is assembled, reflects the part of the light that this first lens face assembles and makes reflecting surface that other parts see through and the plane of refraction that sees through the light of described reflecting surface reflection; And
Photo detector receives the light that sees through described plane of refraction,
Wherein, described first lens face and described plane of refraction are the coaxial surfacess of revolution,
Described first lens face has protuberance on central part,
Overlook when observing, described plane of refraction is formed on the zone that surrounds described first lens face.
2. optical module according to claim 1, wherein,
Described plane of refraction plays a role as second lens face of the light of assembling described reflecting surface reflection.
3. optical module according to claim 1 and 2, wherein,
Described plane of refraction is along the shape of circular cone side.
4. according to each described optical module in the claim 1 to 3, wherein,
Described optics also comprises the 3rd lens face that the light that sees through described reflecting surface is assembled.
5. optical module according to claim 4, wherein,
Described optics also comprises the sleeve that is used to support optical fiber, and wherein, the light that described optical fiber is used to the 3rd lens face is assembled is injected.
6. according to each described optical module in the claim 1 to 5, wherein,
Described light-emitting component and described photo detector are supported by same substrate.
7. according to each described optical module in the claim 1 to 6, wherein,
Described plane of refraction is in abutting connection with the periphery of described first lens face.
8. according to each described optical module in the claim 1 to 7, wherein,
The optical axis that sees through the light of described first lens face has different directions with the optical axis of the light that sees through described plane of refraction.
9. according to each described optical module in the claim 1 to 8, wherein,
Overlook when observing, described first lens face is rounded.
10. according to each described optical module in the claim 1 to 9, wherein,
Described optics has recess between described first lens face and described reflecting surface, wherein, described recess is set on the direction with the optical axis approximate vertical of the light of described light-emitting component emission.
11. optical module according to claim 10, wherein,
Described reflecting surface constitutes the inwall of described recess.
12. optical module according to claim 11, wherein,
The inwall of described recess comprises bottom, described reflecting surface, the see through face relative with this reflecting surface,
Described reflecting surface and the described face that sees through are with relative away from described bottom, wide more at interval mode more.
13. optical module according to claim 12, wherein,
The described face that sees through has the angle of less than 90 degree with respect to the optical axis of the light of described light-emitting component emission.
14. optical module according to claim 12, wherein,
The described face that sees through has angle greater than 90 degree with respect to the optical axis of the light of described light-emitting component emission.
15. according to each described optical module in the claim 1 to 14, wherein,
Described photo detector has the function of supervision by the light output of described light-emitting component generation,
According to the light output that described photo detector monitors, adjust the electric current that offers described light-emitting component.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006142408 | 2006-05-23 | ||
| JP2006142408 | 2006-05-23 | ||
| JP2007047251 | 2007-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101079535A true CN101079535A (en) | 2007-11-28 |
Family
ID=38906836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710105211 Pending CN101079535A (en) | 2006-05-23 | 2007-05-21 | Optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101079535A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217756A (en) * | 2012-01-24 | 2013-07-24 | 日立电线株式会社 | Optical module and method for producing the same |
| CN104751155A (en) * | 2013-12-27 | 2015-07-01 | 精工爱普生株式会社 | Optical device |
| CN111435780A (en) * | 2019-01-15 | 2020-07-21 | 晶智达光电股份有限公司 | Light emitting element |
| CN113508323A (en) * | 2019-03-07 | 2021-10-15 | 恩普乐股份有限公司 | Optical receptacle and optical module |
-
2007
- 2007-05-21 CN CN 200710105211 patent/CN101079535A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217756A (en) * | 2012-01-24 | 2013-07-24 | 日立电线株式会社 | Optical module and method for producing the same |
| CN103217756B (en) * | 2012-01-24 | 2016-01-20 | 日立金属株式会社 | Optical module and manufacture method thereof |
| CN104751155A (en) * | 2013-12-27 | 2015-07-01 | 精工爱普生株式会社 | Optical device |
| CN104751155B (en) * | 2013-12-27 | 2019-05-03 | 精工爱普生株式会社 | Optical devices |
| CN111435780A (en) * | 2019-01-15 | 2020-07-21 | 晶智达光电股份有限公司 | Light emitting element |
| CN111435780B (en) * | 2019-01-15 | 2023-08-29 | 晶智达光电股份有限公司 | Light-emitting element |
| CN113508323A (en) * | 2019-03-07 | 2021-10-15 | 恩普乐股份有限公司 | Optical receptacle and optical module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104360571B (en) | Optical device and imaging system | |
| TWI565989B (en) | Optical fiber connector | |
| CN1856723A (en) | Optical module, light transmission/reception, and optical joint sleeve | |
| CN103430338B (en) | Optical semiconductor encapsulation, optical semiconductor module and their manufacture method | |
| CN1677158A (en) | Micromirror element and optical switch | |
| CN1742218A (en) | Photoelectric package with an integrated lens | |
| JP2011138982A (en) | Illumination device and producing method thereof | |
| CN1959452A (en) | Optical module | |
| TW201508365A (en) | Optical receptacle and optical module | |
| JP6461509B2 (en) | Optical receptacle and optical module | |
| US9563028B2 (en) | Method to manufacture an optoelectronic assembly | |
| JP6747448B2 (en) | Optical path conversion element, optical interface device, optical transmission system | |
| CN101079535A (en) | Optical module | |
| TWI638195B (en) | Optical module | |
| CN1339122A (en) | Omnidirectional vision camera | |
| CN1514930A (en) | Spectrally separating apparatus and its method | |
| US9606306B2 (en) | Optical signal coupling assembly | |
| CN1248023C (en) | Optical component for bidirectional optical communication | |
| CN1204430C (en) | Arrangement for optical signal coupling in or light guide coupling coupling out by using at least one optical data channel | |
| TWI565988B (en) | Optical-electric coupling element and optical-electric converting device using same | |
| CN1514264A (en) | Optical fibre coupling system and its manufacturing method | |
| CN106104342A (en) | Optical receptacle and optical module | |
| CN1837783A (en) | Detection device for adhesion amount of color toner | |
| JP2005250480A (en) | Optical coupling system | |
| JP2013195437A (en) | Light emitting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |