CN2209339Y - Non-polarised beam splitting glass - Google Patents
Non-polarised beam splitting glass Download PDFInfo
- Publication number
- CN2209339Y CN2209339Y CN 94238264 CN94238264U CN2209339Y CN 2209339 Y CN2209339 Y CN 2209339Y CN 94238264 CN94238264 CN 94238264 CN 94238264 U CN94238264 U CN 94238264U CN 2209339 Y CN2209339 Y CN 2209339Y
- Authority
- CN
- China
- Prior art keywords
- refractive index
- optical thin
- layer
- reflectivity
- thin film
- 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 - Fee Related
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Abstract
The utility model relates to a non-polarized beam splitting glass. Three layers of optical thin films with different refractive index are orderly coated on a basal plate glass, wherein, a first layer is middle refractive index film material, a second layer is high refractive index film material, and a third layer is low refractive index film material. The relative thickness of the three optical thin films can be adjusted to control the transmittivity of light rays in the variation of 50-80% and the reflectivity of the light rays in the variation of 20-50%. The transmittivity and the reflectivity of P polarized light and S polarized light are equal. The utility model has the advantages of simple structure, easy processing and producing, low cost, high control precision towards the transmittivity and the reflectivity towards the light rays and can be suitable for the light source components of various optoelectronic products.
Description
The utility model relates to a kind of beam splitter, and refering in particular to is a kind of non-polarization beam splitter.
Radium-shine in recent years (Laser) application on photovoltaic more and more widely, as products such as CD-ROM device such as CD-audio player, walkman, CD-ROM and M, O, radium-shine scanners, all need use beam splitter (beam splitter), and of paramount importance parts are exactly beam splitter in this beam splitter, this beam splitter can make the light reflection or make it to penetrate, no matter be transmission or reflection ray, all can be used as the light source of photosignal; Therefore, beam splitter is for the proportional control of optical transmission rate and reflectivity, and play important effect for the control of the ratio of the transmissivity of P polarized light in the light wave and S polarized light and reflectivity, if each ratio is all controlled very desirablely, then be expected to obtain high-precision smooth signal, make photovoltaic obtain high-quality performance, as make its tonequality, color is finer, more true to nature etc., up to now, the actual beam splitter that uses gets unsatisfactory for the proportional control of light penetration and reflectivity, make the further raising of photovoltaic quality be subjected to certain limitation.
The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of simple in structure, can adjust, accurately control the non-polarization beam splitter of the ratio of light transmittance and reflectivity easily.
The utility model is to adopt following proposal to realize: the optical thin film that applies three layers of different refractivity on base plate glass in regular turn, wherein ground floor is the middle refractive index film material of refractive index at 1.5-2, the second layer is the high refractive index film material of refractive index at 2-4, the 3rd layer of low refractive index film material that is refractive index less than the refractive index of base plate glass, and can control light transmittance and reflectivity by the relative thickness of adjusting three layers of optical thin film.
Concrete structure of the present utility model describes in detail below in conjunction with accompanying drawing:
Accompanying drawing is the floor map that the utility model cooperates light incident, reflection and refraction:
See accompanying drawing, the utility model is to plate three layers of optical thin film 12,13,14 on base plate glass 1 in regular turn, and wherein, ground floor optical thin film 13 directly is plated on the base plate glass 11, and its material is that the middle refraction materials of 1.5-2 constitutes by refractive index, as alundum (Al (Al
2O
3) etc., second layer optical thin film 13 is plated on the ground floor film 12, its material is that the high-index material of 2-4 constitutes by refractive index, as silicon (Si) etc., the 3rd layer of optical thin film 14 is plated on the second layer film 13, its material is made of the low-index material of refractive index less than the base plate glass refractive index, as silicon dioxide, magnesium dioxide (SiO2, MgF2) etc., and, by regulating the relative thickness of three kinds of optical thin films, can reach the ratio of accurate control light transmittance and reflectivity, make light transmittance at 50-80%, reflectivity changes between 20-50%, thereby may command P polarized light equates with the transmissivity and the reflectivity of S polarized light.
Manufacturing of the present utility model and using method are summarized as follows: with the material of three kinds of different refractivities, vary in size by refractive index, be plated on the base plate glass by middle and high, low heating in regular turn, promptly obtain a non-polarization beam splitter (Non-polariEalion Beam Splitter); This non-polarization beam splitter is when making to the control of light reflectance and transmissivity, change that three layers of optical thin film relative thickness realize, can make light transmittance at 50-80%, reflectivity changes between 20-50%, equate with the transmissivity and the reflectivity of S polarized light with further control P polarized light, reach and obtain the high precision light signal, the purpose of raising photovoltaic quality.
In sum, the utility model is simple in structure, and processing and manufacturing is easy, and cost is low, to the control accuracy height of light transmittance and reflectivity, is suitable for obtaining as the light source of various photovoltaic the parts of device.
Claims (2)
1, a kind of non-polarization beam splitter, it is characterized in that it is overlayed on the base plate glass by three layers of different blooming flash plating of refractive index constitutes, and the ground floor optical thin film is middle refraction materials, second layer photon film is a high-index material, the 3rd layer of optical thin film is low-index material, and can control the transmissivity and the reflectivity of light by the relative thickness of regulating three layers of optical thin film.
2, a kind of non-polarization beam splitter according to claim 1, the refractive index that it is characterized in that the ground floor optical thin film is 1.5-2, and the refractive index of second layer optical thin film is 2-4, and the refractive index of the 3rd layer of optical thin film is less than the refractive index of base plate glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94238264 CN2209339Y (en) | 1994-09-26 | 1994-09-26 | Non-polarised beam splitting glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94238264 CN2209339Y (en) | 1994-09-26 | 1994-09-26 | Non-polarised beam splitting glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2209339Y true CN2209339Y (en) | 1995-10-04 |
Family
ID=33845727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94238264 Expired - Fee Related CN2209339Y (en) | 1994-09-26 | 1994-09-26 | Non-polarised beam splitting glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2209339Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8767301B2 (en) | 2008-01-31 | 2014-07-01 | Hewlett-Packard Development Company, L.P. | MEMS-based pellicle beamsplitter |
| WO2020015102A1 (en) * | 2018-07-18 | 2020-01-23 | 福州高意光学有限公司 | Polarization-independent beam splitter |
-
1994
- 1994-09-26 CN CN 94238264 patent/CN2209339Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8767301B2 (en) | 2008-01-31 | 2014-07-01 | Hewlett-Packard Development Company, L.P. | MEMS-based pellicle beamsplitter |
| WO2020015102A1 (en) * | 2018-07-18 | 2020-01-23 | 福州高意光学有限公司 | Polarization-independent beam splitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |