CN103713395A - Infrared depolarization beamsplitting device - Google Patents
Infrared depolarization beamsplitting device Download PDFInfo
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- CN103713395A CN103713395A CN201410017102.4A CN201410017102A CN103713395A CN 103713395 A CN103713395 A CN 103713395A CN 201410017102 A CN201410017102 A CN 201410017102A CN 103713395 A CN103713395 A CN 103713395A
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Abstract
The invention relates to an infrared depolarization beamsplitting device which can effectively lower film system design difficulty and reduce film system layer number and thickness and is convenient to design and easy to manufacture. The infrared depolarization beamsplitting device comprises an incidence lens, an emitting lens and an infrared depolarization beamsplitting film clamped between the incidence lens and the emitting lens; the infrared depolarization beamsplitting film is a multi-layer beamsplitting film formed by combining high-refraction-index materials and low-refraction-index materials in sequence in an alternating mode, the high-refraction-index materials are semiconductor materials Si or metal materials Ge, and the refraction index of the low-refraction-index materials is lower than that of the high-refraction-index materials. The infrared depolarization beamsplitting device has the advantages that Si or Ge which is higher in refraction index is used, the lager refraction index difference with the low-refraction-index materials can effectively lower film system design difficulty and can reduce film system layer number and thickness, and therefore the design is convenient, manufacturing is easy, and production cost is obviously lowered.
Description
Technical field
The present invention 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
The object of the present invention is to provide a kind of difficulty, minimizing film that can effectively reduce the design of film system is the number of plies and thickness, is convenient to the infrared non-polarizing light-splitting device of design, easy preparation.
Object of the present invention 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.
Compared to prior art, the invention has the advantages that: 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 invention, 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 an embodiment of the present invention.
Fig. 3 is the index path of the embodiment of the present invention.
Label declaration: 1-incident eyeglass, 2-infrared non-polarizing spectro-film, 3-outgoing eyeglass.
Embodiment
Below in conjunction with Figure of description and embodiment, content of the present invention is elaborated:
Be illustrated in figure 1 a kind of infrared non-polarizing light-splitting device provided by the invention, 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 SiO2, MgF2, Al2O3.
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.
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 SiO2; A-periodicity, the present embodiment gets 5; Reference wavelength is 1550nm.This initial film system design cannot meet the technical requirement of the present embodiment completely, therefore by the input optical thin film analysis of initial film system and design software TFCalc(or Macleod etc.) be optimized calculating, 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 TiO2(Si and TiO2 are the materials that infrared ray absorbing is little and transmitance is high, but the refractive index of Si is 3.4, apparently higher than TiO2 2.2), total rete number of plies that can meet technical indicator may surpass 20 layers, and total film thickness may surpass 5000nm.
Same, in the present invention, 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 present invention, the dielectric material of incident eyeglass 1 and outgoing eyeglass 3 is not limited only to enumerate in embodiment.
Claims (6)
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.
2. infrared non-polarizing light-splitting device according to claim 1, is characterized in that: described low-index material is SiO2, MgF2, Al2O3 material.
3. infrared non-polarizing light-splitting device according to claim 1 and 2, 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.
4. infrared non-polarizing light-splitting device according to claim 3, is characterized in that: described incident eyeglass (1) and outgoing eyeglass (3) are 45 degree isosceles right-angle prism sheets.
5. infrared non-polarizing light-splitting device according to claim 1 and 2, is characterized in that: the glass material that the material of described incident eyeglass (1) and outgoing eyeglass (3) is homogeneity.
6. the infrared non-polarizing light-splitting device of stating according to claim 1 or 2, it is characterized in that: 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.
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| CN201410017102.4A CN103713395A (en) | 2014-01-15 | 2014-01-15 | Infrared depolarization beamsplitting device |
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| CN201410017102.4A CN103713395A (en) | 2014-01-15 | 2014-01-15 | Infrared depolarization beamsplitting device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995363A (en) * | 2014-05-07 | 2014-08-20 | 京东方科技集团股份有限公司 | Polarization optical splitter, backlight module and display device |
| CN104407410A (en) * | 2014-11-26 | 2015-03-11 | 上海华力微电子有限公司 | Double-refraction depolarization thin film |
| CN105242340A (en) * | 2015-11-17 | 2016-01-13 | 沈阳仪表科学研究院有限公司 | Depolarization color-separating optical filter used for fluorescence analysis |
| CN105717564A (en) * | 2016-04-12 | 2016-06-29 | 三明福特科光电有限公司 | Depolarization pentagonal prism and manufacturing method thereof |
| CN106199984A (en) * | 2016-09-27 | 2016-12-07 | 中山联合光电科技股份有限公司 | One can make lens imaging light-dividing device clearly |
| CN109445120A (en) * | 2018-11-30 | 2019-03-08 | 河南平原光电有限公司 | A kind of polarization spectroscope production method of interference stopping lightscreening plate structure |
| 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 |
| CN110441914A (en) * | 2019-09-03 | 2019-11-12 | 福建福特科光电股份有限公司 | A kind of depolarization light-dividing device |
| CN110456519A (en) * | 2019-07-19 | 2019-11-15 | 中国科学技术大学 | Polarization beam apparatus and preparation method thereof, polarization beam splitting method |
| CN110737099A (en) * | 2018-07-18 | 2020-01-31 | 福州高意光学有限公司 | Polarization independent beam splitter |
| CN110749950A (en) * | 2019-11-29 | 2020-02-04 | 沈阳仪表科学研究院有限公司 | Refractive index matched depolarized film system |
| WO2020103206A1 (en) * | 2018-11-22 | 2020-05-28 | 福州高意光学有限公司 | Polarization-independent filter |
| CN112526656A (en) * | 2020-12-25 | 2021-03-19 | 福建福晶科技股份有限公司 | Four-direction depolarization beam splitter prism and preparation method thereof |
| CN114114703A (en) * | 2021-12-10 | 2022-03-01 | 中国科学院光电技术研究所 | All-dielectric depolarization beam splitter prism suitable for wide-angle incidence and preparation method thereof |
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| US20070086092A1 (en) * | 2005-10-11 | 2007-04-19 | Hidetaka Jidai | Non-polarizing beam splitter |
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| CN203838418U (en) * | 2014-01-15 | 2014-09-17 | 福建福特科光电股份有限公司 | Infrared depolarization beam splitter |
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| JP2000162413A (en) * | 1998-11-25 | 2000-06-16 | Toyo Commun Equip Co Ltd | Light separation prism |
| US20070086092A1 (en) * | 2005-10-11 | 2007-04-19 | Hidetaka Jidai | Non-polarizing beam splitter |
| CN101482626A (en) * | 2007-12-25 | 2009-07-15 | 日本电气硝子株式会社 | Wavelength separating membrance and optical communication filter using the same |
| CN203838418U (en) * | 2014-01-15 | 2014-09-17 | 福建福特科光电股份有限公司 | Infrared depolarization beam splitter |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9933659B2 (en) | 2014-05-07 | 2018-04-03 | Boe Technology Group Co., Ltd. | Polarization beam splitter, backlight module and liquid crystal display apparatus |
| CN103995363A (en) * | 2014-05-07 | 2014-08-20 | 京东方科技集团股份有限公司 | Polarization optical splitter, backlight module and display device |
| CN104407410A (en) * | 2014-11-26 | 2015-03-11 | 上海华力微电子有限公司 | Double-refraction depolarization thin film |
| CN105242340A (en) * | 2015-11-17 | 2016-01-13 | 沈阳仪表科学研究院有限公司 | Depolarization color-separating optical filter used for fluorescence analysis |
| CN105717564A (en) * | 2016-04-12 | 2016-06-29 | 三明福特科光电有限公司 | Depolarization pentagonal prism and manufacturing method thereof |
| CN105717564B (en) * | 2016-04-12 | 2017-07-07 | 三明福特科光电有限公司 | Depolarization pentagonal prism and preparation method thereof |
| CN106199984A (en) * | 2016-09-27 | 2016-12-07 | 中山联合光电科技股份有限公司 | One can make lens imaging light-dividing device clearly |
| CN110737099A (en) * | 2018-07-18 | 2020-01-31 | 福州高意光学有限公司 | Polarization independent beam splitter |
| CN110737099B (en) * | 2018-07-18 | 2022-02-11 | 福州高意光学有限公司 | Polarization independent beam splitter |
| WO2020103206A1 (en) * | 2018-11-22 | 2020-05-28 | 福州高意光学有限公司 | Polarization-independent filter |
| CN109445120A (en) * | 2018-11-30 | 2019-03-08 | 河南平原光电有限公司 | A kind of polarization spectroscope production method of interference stopping lightscreening plate structure |
| 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 |
| 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 |
| CN110456519A (en) * | 2019-07-19 | 2019-11-15 | 中国科学技术大学 | Polarization beam apparatus and preparation method thereof, polarization beam splitting method |
| CN110456519B (en) * | 2019-07-19 | 2021-07-09 | 中国科学技术大学 | Polarization beam splitter, preparation method thereof and polarization beam splitting method |
| CN110441914A (en) * | 2019-09-03 | 2019-11-12 | 福建福特科光电股份有限公司 | A kind of depolarization light-dividing device |
| CN110749950A (en) * | 2019-11-29 | 2020-02-04 | 沈阳仪表科学研究院有限公司 | Refractive index matched depolarized film system |
| CN110749950B (en) * | 2019-11-29 | 2021-11-12 | 沈阳仪表科学研究院有限公司 | Refractive index matched depolarized film system |
| CN112526656A (en) * | 2020-12-25 | 2021-03-19 | 福建福晶科技股份有限公司 | Four-direction depolarization beam splitter prism and preparation method thereof |
| CN114114703A (en) * | 2021-12-10 | 2022-03-01 | 中国科学院光电技术研究所 | All-dielectric depolarization beam splitter prism suitable for wide-angle incidence and preparation method thereof |
| CN114114703B (en) * | 2021-12-10 | 2023-10-03 | 中国科学院光电技术研究所 | All-dielectric depolarization beam splitter prism suitable for wide-angle incidence and preparation method thereof |
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Application publication date: 20140409 |