CN207488533U - A kind of trapezoidal optical filter - Google Patents
A kind of trapezoidal optical filter Download PDFInfo
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- CN207488533U CN207488533U CN201721719827.3U CN201721719827U CN207488533U CN 207488533 U CN207488533 U CN 207488533U CN 201721719827 U CN201721719827 U CN 201721719827U CN 207488533 U CN207488533 U CN 207488533U
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- optical filter
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- trapezoidal
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Abstract
The utility model provides a kind of trapezoidal optical filter, including optical filter ontology, the cross section of the optical filter ontology is trapezoidal, membrane system layer is coated on one inclined-plane of the optical filter ontology, antireflective coating is additionally provided between the membrane system layer and the optical filter ontology, the antireflective coating includes at least one layer MgF2Film layer and at least one layer SiO2Film layer, the SiO2Film layer and the MgF2Film layer is arranged alternately.The trapezoidal optical filter increases antireflective coating on the basis of original optical filter, and the energy that can make reflected light and transmitted light by antireflective coating is redistributed, and can further improve the translucency of optical filter in this way, meets the use needs of high precision photoelectric product.
Description
Technical field
The utility model is related to technical field of photo communication, more particularly to a kind of optical filter of trapezium structure.
Background technology
Optic communication refers to the communication mode realized using light as information carrier, can be divided into air by the difference of transmission medium
Two kinds of laser communication and fiber optic communication.Optic communication have message capacity is big, transmission range is long, electromagnetism interference, transmission quality are good,
The advantages that signal cross-talk is small, good confidentiality is the final goal of future transmission network Development, before having boundless market
Scape.In the bi-directional transceiver module of optic communication product, by selecting the laser signal of wavelength, and reflect unwanted wave band and lead to
Frequently with optical filter（edge filters）It realizes, it may be said that optical filter plays effect of crucial importance in optic communication product.
Chinese utility model patent（The patent No.：2011200965001）A kind of ceramic substrate is disclosed, which sets
Be set to trapezium structure, in this way can to avoid the light that photoelectric device is sent out after ceramic substrate reflects from backtracking, so as to
Ensure the normal work of photoelectric device.Although the reflection of light can be avoided using optical filter made of this ceramic substrate, deposit
Translucency is poor the problem of, therefore its using effect can not fully meet high-precision product needs, it is therefore necessary to existing
Some filter sheet structures are improved.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide one kind to have more preferable translucency
The trapezoidal filter sheet structure of energy.
In order to achieve the above objects and other related objects, the utility model provides a kind of trapezoidal optical filter, including optical filter
Ontology, the cross section of the optical filter ontology is trapezoidal, and membrane system layer, the film are coated on an inclined-plane of the optical filter ontology
It is that antireflective coating is additionally provided between layer and the optical filter ontology, the antireflective coating includes at least one layer MgF2Film layer and at least
One layer of SiO2Film layer, the SiO2Film layer and the MgF2Film layer is arranged alternately.
Preferably, the membrane system layer is LHLHL structures, and wherein H represents that TiO2 layers, L layers are SiO2 layers.
Preferably, each layer thickness of membrane system layer is followed successively by 22nm, 34nm, 56nm, 84nm, 112nm.
Preferably, the antireflective coating includes two layers of MgF2Film layer and one layer of SiO2Film layer, the SiO2Film layer is located at two layers
MgF2Between film layer.
Preferably, the first layer MgF of the antireflective coating2Thicknesses of layers is 32nm, and SiO2 thicknesses of layers is 73nm, second
Layer MgF2Thicknesses of layers is 79nm.
Preferably, the cross section of the optical filter ontology is isosceles trapezoid.
As described above, the trapezoidal optical filter of the utility model has the advantages that：The trapezoidal optical filter is in original filter
Increase antireflective coating on the basis of mating plate, the energy that can make reflected light and transmitted light by antireflective coating is redistributed, and in this way may be used
The translucency of optical filter is further improved, meets the use needs of high precision photoelectric product.
Description of the drawings
Fig. 1 is the cross-sectional view of the utility model embodiment optical filter ontology.
Fig. 2 is the membrane system layer of the utility model embodiment and the structure diagram of antireflective coating.
Component label instructions：1st, optical filter ontology；2nd, antireflective coating；21、MgF2Film layer；22、SiO2Film layer；3rd, membrane system layer；
31st, SiO2 layers；32nd, TiO2 layers.
Specific embodiment
Illustrate the embodiment of the utility model by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
Please refer to Fig.1,2.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only matching
The revealed content of specification is closed, so that those skilled in the art understands and reads, being not limited to the utility model can
The qualifications of implementation, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model institute
The technology contents of announcement are obtained in the range of covering.Meanwhile in this specification it is cited as " on ", " under ", "left", "right",
The term of " centre " and " one " etc. is merely convenient to understanding rather than to limit the enforceable range of the utility model for narration,
Its relativeness is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the utility model.
As shown in Figure 1, the utility model provides a kind of trapezoidal optical filter, including optical filter ontology 1, optical filter ontology 1
Cross section to be trapezoidal, membrane system layer 3 is coated on an inclined-plane of optical filter ontology 1, between membrane system layer 3 and optical filter ontology 1
Antireflective coating 2 is additionally provided with, antireflective coating 2 includes at least one layer MgF2Film layer 21 and at least one layer SiO2Film layer 22, SiO2Film layer 22
With MgF2Film layer 21 is arranged alternately.
As shown in Fig. 2, as a kind of specific embodiment, membrane system layer is LHLHL structures, and wherein H represents TiO2 layers, L layers
It is SiO2 layers.The thickness of 1st layer of SiO2 layer 31 is 22nm, and the thickness of the 1st layer of TiO2 layer 32 is 34nm, the 2nd layer of SiO2 layer 31
Thickness is 56nm, and the thickness of the 2nd layer of TiO2 layer 32 is 84nm, and the thickness of the 3rd layer of SiO2 layer 31 is 112nm（By in figure from it is lower to
Upper direction）.Antireflective coating 2 includes two layers of MgF2Film layer 21 and one layer of SiO2Film layer 22, SiO2Film layer 22 is located at two layers of MgF2Film layer
Between 21.The first layer MgF of antireflective coating221 thickness of film layer is 32nm, and 22 thickness of SiO2 film layers is 73nm, second layer MgF2Film
Layer thickness is 79nm（By direction from bottom to top in figure）.
As a kind of preferred embodiment, the cross section of optical filter ontology 1, in this way need not in plated film using isosceles trapezoid
The direction of optical filter is selected, plated film can be carried out on any one inclined-plane, plating membrane efficiency can be effectively improved.
The trapezoidal optical filter increases antireflective coating on the basis of original optical filter, by antireflective coating can make reflected light with
The energy of transmitted light is redistributed, and can further improve the translucency of optical filter in this way, meets the use of high precision photoelectric product
It needs.So the utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications completed under refreshing and technological thought or change, should be covered by the claim of the utility model.
Claims (6)
1. a kind of trapezoidal optical filter, including optical filter ontology, the cross section of the optical filter ontology is trapezoidal, the optical filter sheet
Membrane system layer is coated on one inclined-plane of body, it is characterised in that：It is additionally provided between the membrane system layer and the optical filter ontology anti-reflection
Film layer, the antireflective coating include at least one layer MgF2Film layer and at least one layer SiO2Film layer, the SiO2Film layer and the MgF2
Film layer is arranged alternately.
2. a kind of trapezoidal optical filter according to claim 1, it is characterised in that：The membrane system layer is LHLHL structures, wherein
H represents that TiO2 layers, L layers are SiO2 layers.
3. a kind of trapezoidal optical filter according to claim 2, it is characterised in that：Each layer thickness of membrane system layer is followed successively by
22nm、34nm、56nm、84nm、112nm。
4. a kind of trapezoidal optical filter according to claim 1, it is characterised in that：The antireflective coating includes two layers of MgF2Film
Layer and one layer of SiO2Film layer, the SiO2Film layer is located at two layers of MgF2Between film layer.
5. a kind of trapezoidal optical filter according to claim 4, it is characterised in that：The first layer MgF of the antireflective coating2Film
Layer thickness is 32nm, and SiO2 thicknesses of layers is 73nm, second layer MgF2Thicknesses of layers is 79nm.
6. a kind of trapezoidal optical filter according to claim 1 to 5 any one claim, it is characterised in that：The filter
The cross section of mating plate ontology is isosceles trapezoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721719827.3U CN207488533U (en) | 2017-12-12 | 2017-12-12 | A kind of trapezoidal optical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721719827.3U CN207488533U (en) | 2017-12-12 | 2017-12-12 | A kind of trapezoidal optical filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207488533U true CN207488533U (en) | 2018-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721719827.3U Expired - Fee Related CN207488533U (en) | 2017-12-12 | 2017-12-12 | A kind of trapezoidal optical filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN207488533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212645A (en) * | 2018-10-18 | 2019-01-15 | 苏州文迪光电科技有限公司 | A kind of novel trapezoidal optical filter |
-
2017
- 2017-12-12 CN CN201721719827.3U patent/CN207488533U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212645A (en) * | 2018-10-18 | 2019-01-15 | 苏州文迪光电科技有限公司 | A kind of novel trapezoidal optical filter |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20181212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |