CN202948213U - Polarization polarizer - Google Patents
Polarization polarizer Download PDFInfo
- Publication number
- CN202948213U CN202948213U CN 201220686231 CN201220686231U CN202948213U CN 202948213 U CN202948213 U CN 202948213U CN 201220686231 CN201220686231 CN 201220686231 CN 201220686231 U CN201220686231 U CN 201220686231U CN 202948213 U CN202948213 U CN 202948213U
- Authority
- CN
- China
- Prior art keywords
- crystal
- prism
- prismatic lens
- light
- optical axis
- 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
Images
Landscapes
- Polarising Elements (AREA)
Abstract
The utility model discloses a polarization polarizer, characterized by comprising a crystal support, a Rochon prism, and a Brewster angle compensating plate, wherein the Rochon prism and the Brewster angle compensating plate are orderly fixed on the crystal support along a light incident direction, the Rochon prism is formed by first and second crystal prism lenses with light through surfaces parallel through glue or optical cement, the optical axes of the first and second prism lenses are mutually vertical, the end face of the first crystal prism, the second crystal prism and the incident light form a Brewster angle, and the direction of the optical axis of the Brewster angle compensating plate is same as the direction of the optical axis of the first crystal prism lens. According to the technical scheme, the polarization polarizer has the advantages of being high in transmittance, simple film plating, and wide in wavelength and temperature application range, reducing the cost, and overcoming the defects of being large in incidence optical loss and being low in transmittance, etc.
Description
Technical field
The utility model relates to optical field, particularly a kind of polarization polarizer.
Background technology
Along with the development of modern polarization light technology and laser application technique, various polarizing devices have obtained application more and more widely, and polarizing beamsplitter is exactly a kind of important polarizing device.Rochon prism is modal a kind of inclined to one side beam splitting element, generally by the birefringece crystal icelandspar, is made, and, because its degree of polarization is high, transmitance is high and the advantage such as good mechanical stability, is widely used in various optical systems.Icelandspar, because natural resources limit, needs the exploitation new material to substitute.In 400nm～2000nm wavelength coverage, the YVO4 crystal is a kind of birefringece crystal with high polarization ratio, high permeability, is applied to making the crystal polarizer part; But its fusing point is high, be difficult for growing high-quality crystal.Utilize α-BBO for making Rochon prism, its transparent wavelength range is: 190nm～3500nm can be widely used in UV wavelength range; But α-BBO is owing to existing solid-state phase changes, make its easily fracture in growth course.
General crystal polarizer will be applied in very large wavelength coverage, need to plate anti-reflection film at plane of crystal, and because birefringece crystal is larger in the variations in refractive index of common wavelengths scope: 190nm～800nm usually, the plating anti-reflection film implements just more difficult.In addition, while utilizing conventional Rochon prism to obtain polarized light, due to the refracting characteristic of light, there is certain translation in the outgoing polarized light with incident light on light path.The problem more than existed for the polarizer of the polarized light that utilizes Rochon prism to obtain.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to design the polarization polarizer that a kind of coating process is simple and can reduce costs.
For achieving the above object, the technical scheme that the utility model proposes is: a kind of polarization polarizer, it is characterized in that: comprise a crystal cartridge, one Rochon prism, this angle compensation sheet of one cloth scholar, described Rochon prism, this angle compensation sheet of cloth scholar is fixed on crystal cartridge along incident light successively, described Rochon prism first crystal prismatic lens and the second crystal prism sheet parallel by logical light face forms by gummed or optical cement, described first crystal prismatic lens and the second crystal prism sheet optical axis are orthogonal, described first crystal prismatic lens end face, the second crystal prism sheet becomes Brewster angle with incident light, this angle compensation sheet optical axis direction of described cloth scholar is identical with the optical axis direction of first crystal prismatic lens.
Further, described first crystal prismatic lens, the second crystal prism sheet are the birefringece crystal prismatic lens, and this angle compensation sheet of described cloth scholar is the birefringece crystal compensating plate.
Further, described birefringece crystal prismatic lens, birefringece crystal compensating plate are negative single axial birefringence crystal Ca
3(BO
3)
2, its ultraviolet cut-on wavelength is 180nm, easily obtains the crystal of large-size high-quality, at ultraviolet region, uses with the obvious advantage.
Adopt technique scheme, the polarization polarizer described in the utility model, by design end face structure angle, make incident light be similar to Brewster angle incidence, can greatly reduce incident end face plated film difficulty like this, increases the transmitance of the polarizer; This angle compensation sheet of cloth scholar adopts Brewster angle incidence, like this can be in the situation that do not affect transmitance, the compensation light beam translation.In addition, crystalline material CBO used has very high transmitance at the deep ultraviolet wave band, and the polarizer can make up ultraviolet band and cover the deficiency of using like this.With conventional prism type crystal polarizer, compare, the polarizer of the utility model structure, have transmitance high, and plated film is simple, and applicable wavelengths and temperature range are wide and can reduce costs, and improves the incident light loss larger, the weak point that transmitance is low.Etc. plurality of advantages.
The accompanying drawing explanation
Fig. 1 is polarization polarizer embodiment described in the utility model 1 schematic diagram;
Fig. 2 is polarization polarizer embodiment described in the utility model 2 schematic diagram;
Wherein: 11. first crystal prismatic lenses, 12. second crystal prism sheets, this angle compensation sheet of 13. cloth scholars, 14. crystal cartridges.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Embodiment 1
As shown in Figure 1, a kind of polarization polarizer, comprise a crystal cartridge 14, one Rochon prism, this angle compensation sheet 13 of one cloth scholar, Rochon prism, this angle compensation sheet 13 of cloth scholar is fixed on crystal cartridge 14 successively along incident light, Rochon prism first crystal prismatic lens 11 and the second crystal prism sheet 12 parallel by logical light face forms by gummed or optical cement, first crystal prismatic lens 11 and the second crystal prism sheet 12 optical axises are orthogonal, wherein first crystal prismatic lens 11 optical axises are perpendicular to paper, the second crystal prism sheet 11 optical axises are parallel to paper, first crystal prismatic lens 11 end faces, the second crystal prism sheet 12 becomes Brewster angle with incident light, these angle compensation sheet 13 optical axis directions of cloth scholar are identical with the optical axis direction of first crystal prismatic lens 11, also perpendicular to paper.
Further, described first crystal prismatic lens 11, the second crystal prism sheet 12 are the birefringece crystal prismatic lens, and this angle compensation sheet 13 of described cloth scholar is the birefringece crystal compensating plate.
Further, described birefringece crystal prismatic lens, birefringece crystal compensating plate are negative single axial birefringence crystal Ca
3(BO
3)
2, its ultraviolet cut-on wavelength is 180nm, easily obtains the crystal of large-size high-quality, at ultraviolet region, uses with the obvious advantage.
Embodiment 2
As shown in Figure 2, embodiment 2 is with the difference of embodiment 1, first crystal prismatic lens 11 optical axises are parallel to paper, the second crystal prism sheet 11 optical axises perpendicular to paper, and these angle compensation sheet 13 optical axis directions of cloth scholar are identical with the optical axis direction of first crystal prismatic lens 11, also are parallel to paper.
Adopt technique scheme, the utility model be take this angle of cloth scholar as end face formation Rochon prism by two first crystal prismatic lenses and the second crystal prism sheet, when incident light arrives the Rochon prism end face with Brewster angle incidence, the transmission of o light part, e light can see through crystal fully, because o light is different with the refractive index of e light in the first crystal prismatic lens, with different refraction angles separately, in the second prismatic lens, o light and e light further separate, and at follow-up this angle compensation sheet of the parallel cloth scholar of another sheet that adds, the horizontal shift of compensation e light, allow the o light deflection to bottom, finally obtain the e light of efficiency light ratio, thereby form the crystal-type polarization polarizer, o, the refractive index of e light is respectively n
0, n
e, the selection at this angle of incident cloth scholar should meet the following conditions:
1) e light can the overwhelming majority or fully transmission, has in the left side incident angle and meets:
θ
i=acrtan (n
0/ n), n is the airborne refractive index of optical axis;
2) should guarantee that prism e light in whole use wavelength coverage has very high transmitance.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present utility model that appended claims limits; in the form and details the utility model is made a variety of changes, be protection domain of the present utility model.
Claims (4)
1. the polarization polarizer, it is characterized in that: comprise a crystal cartridge, one Rochon prism, this angle compensation sheet of one cloth scholar, described Rochon prism, this angle compensation sheet of cloth scholar is fixed on crystal cartridge along incident light successively, described Rochon prism first crystal prismatic lens and the second crystal prism sheet parallel by logical light face forms by gummed or optical cement, described first crystal prismatic lens and the second crystal prism sheet optical axis are orthogonal, described first crystal prismatic lens end face, the second crystal prism sheet becomes Brewster angle with incident light, this angle compensation sheet optical axis direction of described cloth scholar is identical with the optical axis direction of first crystal prismatic lens.
2. according to a kind of polarization polarizer shown in claim 1, it is characterized in that: described first crystal prismatic lens, the second crystal prism sheet are the birefringece crystal prismatic lens, and this angle compensation sheet of described cloth scholar is the birefringece crystal compensating plate.
3. according to a kind of polarization polarizer shown in claim 1, it is characterized in that: described birefringece crystal prismatic lens, birefringece crystal compensating plate are negative single axial birefringence crystal Ca
3(BO
3)
2.
4. according to a kind of polarization polarizer shown in claim 1, it is characterized in that: described negative single axial birefringence crystal Ca
3(BO
3)
2the ultraviolet cut-on wavelength is 180nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686231 CN202948213U (en) | 2012-12-12 | 2012-12-12 | Polarization polarizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686231 CN202948213U (en) | 2012-12-12 | 2012-12-12 | Polarization polarizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202948213U true CN202948213U (en) | 2013-05-22 |
Family
ID=48423908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220686231 Expired - Lifetime CN202948213U (en) | 2012-12-12 | 2012-12-12 | Polarization polarizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202948213U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345098A (en) * | 2013-07-09 | 2013-10-09 | 上海朗研光电科技有限公司 | Pulse broadening and compressing structure based on crystal double refraction |
| CN103457146A (en) * | 2013-09-05 | 2013-12-18 | 中国科学院上海光学精密机械研究所 | Method for determining orientation of crystal axis of titanium sapphire crystal |
| CN103560391A (en) * | 2013-11-13 | 2014-02-05 | 上海朗研光电科技有限公司 | High-magnification discrete pulse broadening method for multi-level cascading polarization beam splitting |
-
2012
- 2012-12-12 CN CN 201220686231 patent/CN202948213U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345098A (en) * | 2013-07-09 | 2013-10-09 | 上海朗研光电科技有限公司 | Pulse broadening and compressing structure based on crystal double refraction |
| CN103345098B (en) * | 2013-07-09 | 2015-10-28 | 上海朗研光电科技有限公司 | Based on pulse strenching and the pressure texture of crystal birefringence |
| CN103457146A (en) * | 2013-09-05 | 2013-12-18 | 中国科学院上海光学精密机械研究所 | Method for determining orientation of crystal axis of titanium sapphire crystal |
| CN103457146B (en) * | 2013-09-05 | 2015-12-23 | 中国科学院上海光学精密机械研究所 | Determine titanium gem crystal crystallographic axis towards method |
| CN103560391A (en) * | 2013-11-13 | 2014-02-05 | 上海朗研光电科技有限公司 | High-magnification discrete pulse broadening method for multi-level cascading polarization beam splitting |
| CN103560391B (en) * | 2013-11-13 | 2016-06-15 | 上海朗研光电科技有限公司 | The high magnification separation pulse strenching method of multi-stage cascade polarization beam splitting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104777545B (en) | A kind of silicon nano brick array polarizing beam splitter | |
| CN203405635U (en) | Stereographic projection device with low projection ratio and high lighting effect and stereographic projection system | |
| CN110308559A (en) | A kind of virtual reality optics module and virtual reality device | |
| CN202102135U (en) | Deep-ultraviolet, visual and near-infrared polarizing prism | |
| CN102096141B (en) | A kind of α-BBO polarizing prism | |
| CN201732177U (en) | Novel polarizing and beam-splitting prism | |
| US20140152944A1 (en) | Display device | |
| CN201489132U (en) | crystal polarizer | |
| CN204557003U (en) | The online optical-fiber laser isolator of a kind of compact reflection-type | |
| CN202948213U (en) | Polarization polarizer | |
| CN104914589B (en) | A kind of monochromatic light proportion adjustable polarization-independent beam splitting device | |
| CN203311091U (en) | Optical device, backlight source and display device | |
| CN101377587A (en) | Liquid crystal display device and optical film | |
| CN104656264A (en) | Polarization beam splitting and combining device | |
| CN102200597B (en) | Air gap type BBO (Barium Boron Oxide) laser polarizing prism | |
| CN104950509A (en) | Liquid crystal display device and antireflection film structure thereof | |
| CN103345014A (en) | Polarizing prism based on alpha-BaTeMo 2O9 crystal | |
| CN104216162A (en) | Liquid crystal display device | |
| CN202904134U (en) | Adjustable beam displacer | |
| CN102495436A (en) | Optical-cement polarized beam splitting prism | |
| CN203535253U (en) | Low pass filter | |
| CN102522680A (en) | Method for designing Brewster window | |
| CN202362527U (en) | Adjustable broadband wave plate | |
| CN102073143A (en) | Crystal polarizing, combining and splitting device | |
| CN202362475U (en) | Polarized beam splitter prism using optical contact |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
|
| CX01 | Expiry of patent term |