CN203838418U - Infrared depolarization beam splitter - Google Patents
Infrared depolarization beam splitter Download PDFInfo
- Publication number
- CN203838418U CN203838418U CN201420023325.7U CN201420023325U CN203838418U CN 203838418 U CN203838418 U CN 203838418U CN 201420023325 U CN201420023325 U CN 201420023325U CN 203838418 U CN203838418 U CN 203838418U
- Authority
- CN
- China
- Prior art keywords
- eyeglass
- film
- polarizing
- outgoing
- refractive index
- 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.)
- Expired - Lifetime
Links
- 230000028161 membrane depolarization Effects 0.000 title abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 55
- 239000007769 metal material Substances 0.000 claims abstract description 6
- 239000004065 semiconductor Substances 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 32
- 230000000694 effects Effects 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- 239000003989 dielectric material Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010896 thin film analysis Methods 0.000 description 1
Landscapes
- Polarising Elements (AREA)
Abstract
The utility model relates to an infrared depolarization beam splitter. The utility model aims to provide an infrared depolarization beam splitter which can effectively alleviate the film system design difficulties, reduce film system layers and thicknesses. Meanwhile, the infrared depolarization beam splitter is convenient to design and easy to make. The infrared depolarization beam splitter comprises an incident lens, an outgoing lens, and an infrared depolarization light-splitting film clamped between the incident lens and the outgoing lens. The infrared depolarization light-splitting film is a multi-layer one formed by sequentially alternately bonding high-refractive index materials and low-refractive index materials. The high-refractive index materials are semiconductor materials Si or metal materials Ge. The refractive indexes of the low-refractive index materials are lower than those of the high-refractive index materials. Greater refractive index differences between the adopted Si or Ge materials with higher refractive indexes and the low-refractive index materials can effectively alleviate the film system design difficulties, and reduce the film system layers and thicknesses. Convenient design and easy preparation are further achieved. The production cost is obviously lowered.
Description
Technical field
The utility model relates to a kind of infrared non-polarizing light-splitting device.
Background technology
Depolarization Amici prism is one of critical elements in Detection Techniques.When light oblique incidence, because the tangential component of each interphase place Electric and magnetic fields of film is continuous, make film reveal different effective refractive indexs to polarized light P component and S subscale, rete inevitably can produce polarization effect, especially more obvious in cemented prism.The widespread use in many optical systems of this polarization effect, can utilize this effect to make the optical polarization devices such as polarization beam apparatus; But in a lot of practical applications, this polarization effect is harmful to simultaneously.
At present often by the combination of multiple dielectric material, prepare depolarization Amici prism in the industry, and the film structure number of plies designing is many and be non-ordered structure, has brought larger test to the plated film preparation work of product; And along with the increase of centre wavelength, particularly for infrared wavelength depolarization Amici prism, the rete gross thickness of its requirement directly has influence on efficiency and the yield rate of batch production especially.
Summary of the invention
It is the number of plies and thickness that the purpose of this utility model is to provide a kind of difficulty, minimizing film that can effectively reduce the design of film system, is convenient to the infrared non-polarizing light-splitting device of design, easy preparation.
The purpose of this utility model is achieved through the following technical solutions: a kind of infrared non-polarizing light-splitting device, and it comprises incident eyeglass, outgoing eyeglass and the clamping infrared non-polarizing spectro-film between incident eyeglass and outgoing eyeglass; Described infrared non-polarizing spectro-film is by high-index material and the low-index material multilayer spectro-film that alternately laminating forms successively, described high-index material is semiconductor material Si or metal material Ge, described high-index material is semiconductor material Si or metal material Ge, and the refractive index of described low-index material is lower than the refractive index of above-mentioned high-index material.
Described low-index material is SiO
2, MgF
2, Al
2o
3material;
Alternately evaporation is on a surface layer of incident eyeglass or outgoing eyeglass successively by high-index material and low-index material for described infrared non-polarizing spectro-film, and evaporation has the incident eyeglass of infrared non-polarizing spectro-film or outgoing eyeglass bonding by optical glue or optical cement technology and outgoing eyeglass or incident eyeglass again.
Compared to prior art, the utility model has the advantage of: selected the higher material of this class refractive index of Si or Ge, its with the larger refractive index difference of low-index material can effectively reduce film system design difficulty, reduce film and be the number of plies and be thickness, be convenient to design, easily preparation, production cost obviously reduce.
Accompanying drawing explanation
Fig. 1 is film structure schematic diagram of the present utility model, and wherein the infrared non-polarizing spectro-film in the amplification icon in accompanying drawing 2 is that some floor height refraction materials and low-index material are alternately fitted and formed successively.
Fig. 2 is the spectrum design drawing of a kind of embodiment of the utility model.
Fig. 3 is the index path of the utility model embodiment.
Label declaration: 1-incident eyeglass, 2-infrared non-polarizing spectro-film, 3-outgoing eyeglass.
Embodiment
Below in conjunction with Figure of description and embodiment, the utility model content is elaborated:
Be illustrated in figure 1 a kind of infrared non-polarizing light-splitting device that the utility model provides, it comprises incident eyeglass 1, outgoing eyeglass 3 and the clamping infrared non-polarizing spectro-film 2 between incident eyeglass 1 and outgoing eyeglass 3; Described infrared non-polarizing spectro-film 2 is by high-index material and the low-index material multilayer spectro-film that alternately laminating forms successively, described high-index material is semiconductor material Si or metal material Ge, and the refractive index of described low-index material is lower than the refractive index of above-mentioned high-index material.
Above-mentioned high-index material and low-index material are general just all to be selected and in infrared band, absorbs the material little, transmitance is high.
Described low-index material is dielectric material SiO
2, MgF
2, Al
2o
3.
Described incident eyeglass 1 and outgoing eyeglass 3 are right-angled edge eyeglass, and described infrared non-polarizing spectro-film 2 is fitted between the inclined-plane of two right-angled edge eyeglasses.
Described incident eyeglass 1 and outgoing eyeglass 3 are 45 degree isosceles right-angle prism sheets.
The glass material that the material of described incident eyeglass 1 and outgoing eyeglass 3 is homogeneity.
Alternately evaporation is on a surface layer of incident eyeglass 1 or outgoing eyeglass 3 successively by high-index material and low-index material for described infrared non-polarizing spectro-film 2, and evaporation has the incident eyeglass 1 of infrared non-polarizing spectro-film 2 or outgoing eyeglass 3 bonding by optical glue or optical cement technology and outgoing eyeglass 3 or incident eyeglass 1 again.
Embodiment 1
The technical indicator of the infrared non-polarizing Amici prism of the present embodiment is:
In the present embodiment, the incident eyeglass 1 of infrared non-polarizing Amici prism and the dielectric material of outgoing eyeglass 3 are FS quartz glass or K9 glass, are of a size of two the 45 degree isosceles right-angle prisms of 20*20.
The spectrum index of the infrared non-polarizing Amici prism of selecting in the present embodiment is:
Tp=Ts=50+/-5%@1550=/-20nm, Rs=Rp=50+/-5%@1550=/-20nm, as shown in Figure 3, the right-angle prism inclined-plane of the relative incident eyeglass 1 of incident light is miter angle (both vertical prism always edged surface) to glass medium incident.
According to technical indicator, the rete storehouse of 1/4 lambda1-wavelength optical thickness of label taking standard as initial film is:
Glass/(HL)^aH/Glass
Glass-glass medium wherein; The optical thickness high refractive index layer of H-1/4 incident light optical wavelength, in the present embodiment, this film material is Si; The optical thickness low-index film of L-1/4 incident light optical wavelength, in the present embodiment, this film material is SiO
2; A-periodicity, the present embodiment gets 5; Reference wavelength is 1550nm.The design of this initial film system cannot meet the technical requirement of the present embodiment completely, therefore the input optical thin film analysis of initial film system and design software TFCalc (or Macleod etc.) is optimized to calculating, and the film structure after being optimized is:
Glass/0.45H0.9L0.45H0.88L0.84H4.0L0.81H0.66L0.46H0.87L0.54H/Glass
As shown in Figure 2, the design of the system of the film after optimization can meet technical requirement.In the present embodiment, total rete number of plies of infrared non-polarizing spectro-film 2 is 11 layers, and total thicknesses of layers is 2400nm.And if adopt generic media material, such as TiO
2(Si and TiO
2be all the material that infrared ray absorbing is little and transmitance is high, but the refractive index of Si is 3.4, apparently higher than TiO
22.2), total rete number of plies that can meet technical indicator may surpass 20 layers, total film thickness may surpass 5000nm.
Same, in the utility model, with metal material Ge, replace above-mentioned high-index material Si and also can reach above-mentioned same effect.
It should be noted that two kinds of optical glass that in the utility model, the dielectric material of incident eyeglass 1 and outgoing eyeglass 3 is not limited only to enumerate in embodiment.
Claims (4)
1. an infrared non-polarizing light-splitting device, is characterized in that: it comprises incident eyeglass (1), outgoing eyeglass (3) and the clamping infrared non-polarizing spectro-film (2) between incident eyeglass (1) and outgoing eyeglass (3); Described infrared non-polarizing spectro-film (2) is by high-index material and the low-index material multilayer spectro-film that alternately laminating forms successively, described high-index material is semiconductor material Si or metal material Ge, and the refractive index of described low-index material is lower than the refractive index of above-mentioned high-index material;
Described low-index material is SiO
2, MgF
2, Al
2o
3material;
Alternately evaporation is on a surface layer of incident eyeglass (1) or outgoing eyeglass (3) successively by high-index material and low-index material for described infrared non-polarizing spectro-film (2), and evaporation has the incident eyeglass (1) of infrared non-polarizing spectro-film (2) or outgoing eyeglass (3) bonding by optical glue or optical cement technology and outgoing eyeglass (3) or incident eyeglass (1) again.
2. infrared non-polarizing light-splitting device according to claim 1, it is characterized in that: described incident eyeglass (1) and outgoing eyeglass (3) are right-angled edge eyeglass, and described infrared non-polarizing spectro-film (2) is fitted between the inclined-plane of two right-angled edge eyeglasses.
3. infrared non-polarizing light-splitting device according to claim 2, is characterized in that: described incident eyeglass (1) and outgoing eyeglass (3) are 45 degree isosceles right-angle prism sheets.
4. according to the infrared non-polarizing light-splitting device described in claim 1-3 any one, it is characterized in that: the glass material that the material of described incident eyeglass (1) and outgoing eyeglass (3) is homogeneity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023325.7U CN203838418U (en) | 2014-01-15 | 2014-01-15 | Infrared depolarization beam splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023325.7U CN203838418U (en) | 2014-01-15 | 2014-01-15 | Infrared depolarization beam splitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203838418U true CN203838418U (en) | 2014-09-17 |
Family
ID=51516240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420023325.7U Expired - Lifetime CN203838418U (en) | 2014-01-15 | 2014-01-15 | Infrared depolarization beam splitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203838418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713395A (en) * | 2014-01-15 | 2014-04-09 | 福建福特科光电股份有限公司 | Infrared depolarization beamsplitting device |
| CN106443862A (en) * | 2016-11-24 | 2017-02-22 | 福建福特科光电股份有限公司 | Visible broad-spectrum depolarizing beam splitter |
| CN109471211A (en) * | 2018-12-29 | 2019-03-15 | 润坤(上海)光学科技有限公司 | A kind of depolarization light combination mirror film and its design method |
-
2014
- 2014-01-15 CN CN201420023325.7U patent/CN203838418U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713395A (en) * | 2014-01-15 | 2014-04-09 | 福建福特科光电股份有限公司 | Infrared depolarization beamsplitting device |
| CN106443862A (en) * | 2016-11-24 | 2017-02-22 | 福建福特科光电股份有限公司 | Visible broad-spectrum depolarizing beam splitter |
| CN106443862B (en) * | 2016-11-24 | 2019-01-29 | 福建福特科光电股份有限公司 | It can be seen that wide spectrum depolarization light splitting piece |
| CN109471211A (en) * | 2018-12-29 | 2019-03-15 | 润坤(上海)光学科技有限公司 | A kind of depolarization light combination mirror film and its design method |
| CN109471211B (en) * | 2018-12-29 | 2021-07-02 | 润坤(上海)光学科技有限公司 | Depolarization beam combiner film and design method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |