CN102967943A - High-transparency polarization module - Google Patents
High-transparency polarization module Download PDFInfo
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- CN102967943A CN102967943A CN2012105315282A CN201210531528A CN102967943A CN 102967943 A CN102967943 A CN 102967943A CN 2012105315282 A CN2012105315282 A CN 2012105315282A CN 201210531528 A CN201210531528 A CN 201210531528A CN 102967943 A CN102967943 A CN 102967943A
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- transparency
- refraction crystal
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Abstract
The invention provides a high-transparency polarization module which comprises a double-refraction crystal, a polarization apparatus glued on the light-out surface of the double-refraction crystal and a beam expanding and shaping lens group, wherein the polarization apparatus is a 1/2 wave plate; the area of the polarization apparatus is half of the light-out surface of the double-refraction crystal; and during the use, a light beam is divided into two beams of light with different polarization states through the double-refraction crystal, the two beams of light are converted into light with same polarization states through an optical rotator and then the high-efficiency polarization light is obtained through a beam combining and shaping device. The high-transparency polarization module has the characteristics of high conversion efficiency, high transmittance and high extinction ratio, and is suitable for mass production.
Description
Technical field
The invention belongs to the optical element field, especially relate to a kind of polarization module of high transmission rate.
Background technology
Polarizer is widely used in fields such as national defence, scientific research, production, teaching, especially the polarizer of the good high-polarization of performance, high permeability, be widely used in the optical instrument of various precisions, such as ultraviolet one visible light light-splitting luminosity, ellipsometer, high polarization than laser instrument etc.
At present, polarizer mainly contains two large classes: the first kind is to be made of crystalline material, is commonly used to make the material of polarizer generally by icelandspar, α-bbo crystal, YVO
4The general polarization structure that adopts is Glan laser, Glan Taylor or glan thompson prism, is characterized in good in optical property, and degree of polarization is high, but processing inconvenience, price.Equations of The Second Kind is to be coated with the processing of multilayered medium polarization beam splitter at optical glass to combine, and is characterized in low price.
The polarized light of conventional polariser part output only is part P light or S light, and transmitance is lower, thereby the invention provides the higher polarization module of a kind of transmittance.
Summary of the invention
The object of the invention is to overcome the shortcoming of the transmittance deficiency of present polarizing prism, the present invention adopts following technology to realize: a kind of polarization module of high transmission rate, comprise birefringece crystal, be glued on the birefringece crystal exiting surface the polarization polarization apparatus and and expand shaping lens group, described polarization rotator is 1/2 wave plate, and area is half of birefringece crystal exiting surface.
Principle of the present invention is to be divided into P light and S light when light beam sees through birefringece crystal, P light and S light are fully walked in birefringece crystal from making P light or S light see through separately polarization rotator, the rear phase place of phase place polarization 90 degree is not consistent with the light that sees through optical rotator behind P light or the S light transmission polarization rotator, again by closing the bundle shaping lens group with the light beam mixing and narrowing down to and the incident beam in the same size.
Description of drawings
Fig. 1 is the polarization mode block structure synoptic diagram of a kind of high transmission rate of the present invention.
Wherein 1 is birefringece crystal, and 2 is optical rotator, and 3 for closing the bundle shaping lens group
Specific embodiment
1 beam splitter, 2 of making for birefringece crystal is that λ/2 wave plates, 3 are for closing the bundle shaping lens group as shown in Figure 1.All mirror polish that light passes through, utilize birefringece crystal to make separating of P light and S light, S light is without λ/2 wave plates, and P light obtains the S polarized light by λ/2 wave plates, the parallel S polarized light of two bundles closes the bundle orthopedic systems through lens, light beam is narrowed down to the same with incident beam large.
Claims (1)
1. the polarization module of a high transmission rate, comprise birefringece crystal, be glued on the birefringece crystal exiting surface the polarization polarization apparatus and and expand shaping lens group, it is characterized in that: described polarization rotator is 1/2 wave plate, and area is half of birefringece crystal exiting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105315282A CN102967943A (en) | 2012-12-12 | 2012-12-12 | High-transparency polarization module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105315282A CN102967943A (en) | 2012-12-12 | 2012-12-12 | High-transparency polarization module |
Publications (1)
| Publication Number | Publication Date |
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| CN102967943A true CN102967943A (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012105315282A Pending CN102967943A (en) | 2012-12-12 | 2012-12-12 | High-transparency polarization module |
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| CN (1) | CN102967943A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518562A (en) * | 2013-09-12 | 2016-04-20 | Lg化学株式会社 | Apparatus for manufacturing polarizing film |
| CN114911013A (en) * | 2021-02-10 | 2022-08-16 | 维林光电(苏州)有限公司 | Fiber-coupled semiconductor laser and fiber-coupling method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101388521A (en) * | 2008-10-14 | 2009-03-18 | 福州高意通讯有限公司 | Method realizing adjustment of laser frequency difference and laser thereof |
| CN102375247A (en) * | 2011-10-26 | 2012-03-14 | 福建福晶科技股份有限公司 | Polarized coupling system |
-
2012
- 2012-12-12 CN CN2012105315282A patent/CN102967943A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101388521A (en) * | 2008-10-14 | 2009-03-18 | 福州高意通讯有限公司 | Method realizing adjustment of laser frequency difference and laser thereof |
| CN102375247A (en) * | 2011-10-26 | 2012-03-14 | 福建福晶科技股份有限公司 | Polarized coupling system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518562A (en) * | 2013-09-12 | 2016-04-20 | Lg化学株式会社 | Apparatus for manufacturing polarizing film |
| CN105518562B (en) * | 2013-09-12 | 2017-10-27 | Lg化学株式会社 | Device for preparing polarizing coating |
| CN114911013A (en) * | 2021-02-10 | 2022-08-16 | 维林光电(苏州)有限公司 | Fiber-coupled semiconductor laser and fiber-coupling method |
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Application publication date: 20130313 |