CN106950637A - A kind of double Wollaston symmetric splitting prisms of the class of Iceland spar and glass combination - Google Patents
A kind of double Wollaston symmetric splitting prisms of the class of Iceland spar and glass combination Download PDFInfo
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- CN106950637A CN106950637A CN201710318707.0A CN201710318707A CN106950637A CN 106950637 A CN106950637 A CN 106950637A CN 201710318707 A CN201710318707 A CN 201710318707A CN 106950637 A CN106950637 A CN 106950637A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
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- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention belongs to the structure design of optical element and material selection field, the devating prism of more particularly to a kind of Iceland spar and glass combination.This method uses Iceland spar and glass combination, it have devised a kind of dual output polarization beam splitter prism of ternary structural, with the polarization beam splitting effect similar to double wollaston prisms, the symmetrical performance of the combined prism beam splitting is better than double wollaston prisms of identical structure angle, while 50% calcite crystal material can also be saved.
Description
Technical field
The invention belongs to the structure design of optical element and material selection field, more particularly to a kind of Iceland spar and glass group
The devating prism of conjunction.
Background technology
With developing rapidly for the development of polarization optics, especially Polarization Detection technology, devating prism is always people pass
The object of note, it be light path be polarized, the core devices of analyzing.It is general at present that devating prism is made using calcite crystal, still
Natural optical grade calcite crystal resource is increasingly exhausted, and finding the replacement crystal or Curve guide impeller reduces ice continent in single prism
The consumption of stone crystalline material just turns into study hotspot.
The content of the invention
It is an object of the invention to be designed by new prism structure, the side combined using calcite crystal with optical glass
Method, designs a kind of double Wollaston symmetric splitting prisms of class of combination, and the calcite crystal material consumption of reduction by 50% has simultaneously
The polarization function of standby double wollaston prisms, and the combined prism symmetric splitting deviation that the present invention is designed is better than identical structure
Double wollaston prisms at angle.
The technical solution adopted by the present invention is two pieces of right-angle prisms and waited between girdle prism by resin glue, optical cement or air
Gap is glued together, as shown in figure 1, forming rectangular structure：Two described right-angle prism materials are calcite crystals, wait girdle
The material of mirror is H-BaK8 optical glass；Described calcite crystal is natural light classes and grades in school calcite crystal；Two described right angles
The light pass surface of prism is a right-angle surface and an inclined-plane；Structure angle between two described right-angle prisms, light pass surface is identical；Institute
It is two adjacent inclined-planes that states, which waits the light pass surface of girdle prism,；The described structure angle waited between girdle prism light pass surface is right-angled edge
Twice of mirror structure angle；Optical axis is oriented parallel to thang-kng inclined-plane and two right-angle surfaces in described Iceland spar right-angle prism；It is described
H-BaK8 optical glass be a kind of conventional optical window material, H-BaK8 is generally acknowledged numbering of the optical field to the glass, is made
For a kind of optical glass, possess that size is big, low-cost feature, its optics is 290nm ~ 2400nm through scope, by itself and ice
The double Wollaston symmetric splitting prisms of class that continent stone crystal combinations are designed can cover the transmission model of double wollaston prisms
Enclose, its key technology is the dispersion of refractive index curve almost Perfect of H-BaK8 optical glass positioned at the main refraction of calcite crystal two
The centre of rate dispersion curve, as shown in Figure 2；When being combined with calcite crystal, by structure design, as shown in figure 3, can make
Occurs deviation when non-ordinary light and ordinary light are by prism, according to the law of refraction, the angle approximately equal of two deflections of light.
Conventional double wollaston prism structures and light path as shown in Figure 4, Figure 5, by two pieces of Iceland spar right-angle prisms and one piece
Iceland spar isosceles prism is constituted；The double Wollaston symmetric splitting prism ratios of Iceland spar and the class of glass combination that the present invention is designed are same
The double wollaston prisms of specification reduce by 50% calcite crystal materials'use amount, while H-BaK8 optical glass prices are more than ice
Continent stone is cheap, can reduce manufacturing cost.
The double Wollaston symmetric splitting prisms of Iceland spar and the class of glass combination that the present invention is designed are two ends symmetrical structures,
The characteristics of possessing two-way use, and two-way to be polarized beam splitting effect identical.
Fig. 6 and Fig. 7 are respectively the double Wollaston symmetric splitting prisms of class of the present invention and the double Wollaston ribs of Iceland spar
The correlation curve that mirror symmetric splitting deviation changes with wavelength and structure angle, it can be seen that：In the case where lambda1-wavelength is given,
The symmetric splitting deviation of the double Wollaston symmetric splitting prisms of class of the present invention is only mutually isostructural pair of Wollaston rib
A quarter of mirror symmetric splitting deviation or so；In the case where structure angle is given, the double Wollastons pair of class of the present invention
Claim the symmetric splitting deviation of beam splitter prism less than 1/2nd of mutually isostructural pair of wollaston prism symmetric splitting deviation.
The beneficial effects of the invention are as follows：Calcite crystal material is saved, prism low manufacture cost, beam splitting symmetry performance will
Better than double wollaston prisms.
Brief description of the drawings：
Fig. 1 is the structural representation of the double Wollaston symmetric splitting prisms of the class of Iceland spar of the present invention and glass combination,
Wherein four-headed arrow represents the direction of optical axis；
The dispersion of refractive index curve and two principal refractive index colors of calcite crystal for the H-BaK8 optical glass that Fig. 2 uses for the present invention
Relation schematic diagram between non-dramatic song line, wherein noFor the principal refractive index of ordinary light in calcite crystal, neTo be non-in calcite crystal
The principal refractive index of ordinary light, n is the refractive index of H-BaK8 optical glass；
Fig. 3 is the light path schematic diagram of the double Wollaston symmetric splitting prisms of the class of Iceland spar of the present invention and glass combination,
Its orbicular spot represents the direction of optical axis；
Fig. 4 is the double wollaston prism structural representations of Iceland spar, and wherein four-headed arrow represents the direction of optical axis；
Fig. 5 is the double wollaston prism light path schematic diagrams of Iceland spar, and its orbicular spot represents direction perpendicular to paper；
Fig. 6 is the symmetric splitting deviation of the double Wollaston symmetric splitting prisms of the class of Iceland spar of the present invention and glass combination
And double wollaston prism symmetric splitting deviations are with the contrast curve of structure angle variation relation, the lambda1-wavelength is now taken to be
632.8nm, wherein Δ1It is the symmetric splitting deviation of double wollaston prisms, Δ2It is Iceland spar of the present invention and glass group
The symmetric splitting deviation of the double wollaston prisms of the class of conjunction；
Fig. 7 is the symmetric splitting deviation of the double Wollaston symmetric splitting prisms of the class of Iceland spar of the present invention and glass combination
And double wollaston prism symmetric splitting deviations are with the structure angle of the contrast curve, now prism of lambda1-wavelength variation relation
Value is 30.00 °, wherein Δ1It is the symmetric splitting deviation of double wollaston prisms, Δ2It is Iceland spar of the present invention and glass
The symmetric splitting deviation of the double wollaston prisms of class of glass combination.
Embodiment：
Embodiment one：As shown in figures 1 and 3, it is ice continent respectively to constitute two right-angle prisms of devating prism and wait girdle prism material
Stone crystal and H-BaK8 optical glass, wherein two right-angle prism structures are identical, the optical axis of Iceland spar right-angle prism is parallel to thang-kng
Inclined-plane and two right-angle surfaces, the structure angle between thang-kng inclined-plane and thang-kng right-angle surface is 25.00 °, and it is 632.8nm to take lambda1-wavelength,
Now, the refractive index of H-BaK8 optical glass is 1.57041, and the non-ordinary light principal refractive index of calcite crystal is 1.48515, ordinary
Light principal refractive index is 1.65567, and now the splitting angle of prism is 9.13 °, and symmetric splitting deviation is 0.05 °.
Embodiment two：As shown in figures 1 and 3, two right-angle prisms of composition devating prism and grade girdle prism material are respectively
Calcite crystal and H-BaK8 optical glass, wherein two right-angle prism structures are identical, the optical axis of Iceland spar right-angle prism parallel to
Thang-kng right-angle surface, perpendicular to non-thang-kng right-angle surface, the structure angle between thang-kng inclined-plane and thang-kng right-angle surface is 30.00 °, takes incident light
Wavelength is 632.8nm, now, and the refractive index of H-BaK8 optical glass is 1.57041, the non-ordinary light principal refractive index of calcite crystal
For 1.48515, ordinary light principal refractive index is 1.65567, and now the splitting angle of prism is 11.32 °, and symmetric splitting deviation is
0.10°。
Claims (1)
1. a kind of double Wollaston symmetric splitting prisms of the class of Iceland spar and glass combination, including two pieces of right-angle prisms and one piece etc.
Girdle prism, the structure angle that the light pass surface of two right-angle prisms is between a right-angle surface and inclined-plane, and light pass surface is identical；Deng girdle prism
Light pass surface is twice that structure angle between two inclined-planes, its light pass surface is right-angle prism structure angle, right-angle prism and waits girdle
Mirror light pass surface is glued together by resin glue, optical cement or air-gap, forms rectangular structure, it is characterised in that described two are straight
Angle prism and isosceles prism material are calcite crystal and H-BaK8 optical glass, the optical axis of calcite crystal right-angle prism respectively
Parallel to thang-kng inclined-plane and two right-angle surfaces.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710318707.0A CN106950637A (en) | 2017-05-08 | 2017-05-08 | A kind of double Wollaston symmetric splitting prisms of the class of Iceland spar and glass combination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710318707.0A CN106950637A (en) | 2017-05-08 | 2017-05-08 | A kind of double Wollaston symmetric splitting prisms of the class of Iceland spar and glass combination |
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| CN106950637A true CN106950637A (en) | 2017-07-14 |
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| CN201710318707.0A Pending CN106950637A (en) | 2017-05-08 | 2017-05-08 | A kind of double Wollaston symmetric splitting prisms of the class of Iceland spar and glass combination |
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Citations (8)
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|---|---|---|---|---|
| CN101046526A (en) * | 2006-03-29 | 2007-10-03 | 曲阜师范大学激光研究所 | Polarized light beam splitting double reflection method and complex polarized light beam splitting prism |
| CN201004093Y (en) * | 2006-06-26 | 2008-01-09 | 福州高意通讯有限公司 | A polarization bundle prism |
| CN101236305A (en) * | 2007-02-02 | 2008-08-06 | 上海飞锐光电科技有限公司 | Polarization converting device |
| CN102401916A (en) * | 2011-11-30 | 2012-04-04 | 福建福晶科技股份有限公司 | Polarization beam splitting prism with high extinction ratio |
| CN103822712A (en) * | 2014-03-04 | 2014-05-28 | 中国科学院光电研究院 | Imaging method and imaging spectrometer based on Wollaston prism light splitting |
| CN104251673A (en) * | 2013-06-28 | 2014-12-31 | 曲阜师范大学 | Crystal prism type beam divergence angle inductor |
| CN104777543A (en) * | 2015-03-27 | 2015-07-15 | 中国石油大学(华东) | Multi-beam outgoing polaroid prism |
| CN206147132U (en) * | 2016-08-31 | 2017-05-03 | 颜栋卿 | Polarization splitting prism |
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2017
- 2017-05-08 CN CN201710318707.0A patent/CN106950637A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046526A (en) * | 2006-03-29 | 2007-10-03 | 曲阜师范大学激光研究所 | Polarized light beam splitting double reflection method and complex polarized light beam splitting prism |
| CN201004093Y (en) * | 2006-06-26 | 2008-01-09 | 福州高意通讯有限公司 | A polarization bundle prism |
| CN101236305A (en) * | 2007-02-02 | 2008-08-06 | 上海飞锐光电科技有限公司 | Polarization converting device |
| CN102401916A (en) * | 2011-11-30 | 2012-04-04 | 福建福晶科技股份有限公司 | Polarization beam splitting prism with high extinction ratio |
| CN104251673A (en) * | 2013-06-28 | 2014-12-31 | 曲阜师范大学 | Crystal prism type beam divergence angle inductor |
| CN103822712A (en) * | 2014-03-04 | 2014-05-28 | 中国科学院光电研究院 | Imaging method and imaging spectrometer based on Wollaston prism light splitting |
| CN104777543A (en) * | 2015-03-27 | 2015-07-15 | 中国石油大学(华东) | Multi-beam outgoing polaroid prism |
| CN206147132U (en) * | 2016-08-31 | 2017-05-03 | 颜栋卿 | Polarization splitting prism |
Non-Patent Citations (2)
| Title |
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| 任树峰: "冰洲石-玻璃组合偏光棱镜的研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
| 王伟，等: "基于双Wollaston棱镜的对称分束角偏光分束镜", 《光学技术》 * |
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Application publication date: 20170714 |