CN205192618U - Polarisation modulation analysis measuring apparatu - Google Patents
Polarisation modulation analysis measuring apparatu Download PDFInfo
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- CN205192618U CN205192618U CN201520297160.7U CN201520297160U CN205192618U CN 205192618 U CN205192618 U CN 205192618U CN 201520297160 U CN201520297160 U CN 201520297160U CN 205192618 U CN205192618 U CN 205192618U
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- polarizing prism
- wave plate
- light source
- detector
- light
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Abstract
The utility model relates to a polarisation modulation analysis measuring apparatu mainly includes light source (1), collimating lens (2), wave plate (3), polarizing prism (4), collector lens (5) and detector (6), the center of light source (1), collimating lens (2), wave plate (3), polarizing prism (4), collector lens (5) and detector (6) is in a ray ofly. Light source (1) is the monochromatic point source. Polarizing prism (4) comprise a plurality of inclined to one side vibration -damping sheet. Wave plate (3) and polarizing prism (4) set up respectively on two rotatable platforms. The utility model provides a polarisation modulation analysis measuring apparatu makes the incident light pass through a series of modulation optical element, thereby changes the light intensity value that a set of emergent light was measured to the state that detects optical element through machinery rotation or continuous periodic modulation to be fourier analysis to it, and then obtain four stokes parameters.
Description
Technical field
The utility model relates to a kind of instrument detected polarized light, particularly relates to a kind of polarisation Modulation analysis measuring instrument, belongs to Polarization Detection field.
Background technology
In remote optical sensing field, Polarization Detection is supplementary as of intensity detection, quantity of information can be extended to 7 degree of freedom from three-dimensional, contributes to the accuracy improving target detection and Objects recognition.Gasoloid Polarimeter, as a kind of polarization remote sensing instrument, has investigative range large, and spatial resolution height and measuring accuracy high, be widely used in the research in the fields such as weather monitoring, environmental monitoring and atmosphere radiation characteristic.Polarization Detection is as a useful supplement of intensity detection, quantity of information can be extended to 7 degree of freedom (light intensity, spectrum, space, degree of polarization, polarization azimuth, polarization ellipticity and sense of rotation) from three-dimensional (light intensity, spectrum and space), contribute to the accuracy improving target detection and Objects recognition.In the last few years, domestic and international researchist had carried out the design of a large amount of atural object measurement of polarization characteristic research and polarization imaging measuring system, had promoted the development of Polarization Detection technology greatly.But be at present still in for Polarization Detection aspect the jejune stage.
Utility model content
In order to overcome the deficiencies in the prior art, resolving the problem of prior art, making up the deficiency of existing existing product in the market.
The utility model provides a kind of polarisation Modulation analysis measuring instrument, mainly comprise light source, collimation lens, wave plate, polarizing prism, collector lens and detector, described light source, collimation lens, wave plate, polarizing prism, the center of collector lens and detector is in a line, described light source is monochromatic source, described polarizing prism is made up of multiple polaroid, described wave plate and polarizing prism arrange in two rotatable platform respectively, the monochromatic optical wave to be detected that light source sends becomes after directional light through collimation lens, pass in succession through wave plate and polarizing prism, by collector lens, light wave to be detected is gathered on the detector again.
The polarisation Modulation analysis measuring instrument that the utility model provides makes incident light by a series of modulated optical element, change the state of detecting optical element by mechanical rotation or continuous print periodic modulation thus measure the light intensity value of one group of emergent light, and Fourier analysis is done to it, and then obtain four stokes parameters.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Reference numeral: 1-light source; 2-collimation lens; 3-wave plate; 4-polarizing prism; 5-collector lens; 6-detector.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the utility model, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.
The polarisation Modulation analysis measuring instrument that the utility model provides mainly comprises light source 1, collimation lens 2, wave plate 3, polarizing prism 4, collector lens 5 and detector 6, and the center of light source 1, collimation lens 2, wave plate 3, polarizing prism 4, collector lens 5 and detector 6 is in a line.
Wherein, light source 1 is monochromatic source.Polarizing prism 4 is made up of multiple polaroid.Wave plate 3 and polarizing prism 4 are arranged in two rotatable platform respectively.
The monochromatic optical wave to be detected that light source 1 sends, after collimation lens 2 becomes directional light, passes in succession through wave plate 3 and polarizing prism 4, then by collector lens 5, light wave to be detected is gathered on detector 6.
Be that axle rotates wave plate W or polaroid P with incident light during measurement, then the pass of transmitted light intensity I and stokes parameter is
In formula, α is the angle between the light transmission shaft of P and x-axis; β is the fast axle of wave plate W and the angle of x-axis.Because the photosurface of photodetector generally has polarization selectivity to a certain degree, therefore during actual measurement with rotating wave plate W, fixing P is good, and now the expression formula of transmitted light intensity is
In formula, β=ω t, ω are the angular velocity that wave plate W rotates.N number of modulation point if wave plate has rotated a circle, then the rotation stepping angle of wave plate is Δ β=β
i+1-β
i, i=1,2 ..., N.
The embodiment of the above is better embodiment of the present utility model; not limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence change that all shapes according to the utility model, structure are done is all in protection domain of the present utility model.
Claims (1)
1. a polarisation Modulation analysis measuring instrument, it is characterized in that: described polarisation Modulation analysis measuring instrument mainly comprises light source (1), collimation lens (2), wave plate (3), polarizing prism (4), collector lens (5) and detector (6), described light source (1), collimation lens (2), wave plate (3), polarizing prism (4), the center of collector lens (5) and detector (6) is in a line, described light source (1) is monochromatic source, described polarizing prism (4) is made up of multiple polaroid, described wave plate (3) and polarizing prism (4) arrange in two rotatable platform respectively, the monochromatic optical wave to be detected that light source (1) sends is after collimation lens (2) becomes directional light, pass in succession through wave plate (3) and polarizing prism (4), by collector lens (5), light wave to be detected is gathered on detector (6) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520297160.7U CN205192618U (en) | 2015-05-04 | 2015-05-04 | Polarisation modulation analysis measuring apparatu |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520297160.7U CN205192618U (en) | 2015-05-04 | 2015-05-04 | Polarisation modulation analysis measuring apparatu |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205192618U true CN205192618U (en) | 2016-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520297160.7U Expired - Fee Related CN205192618U (en) | 2015-05-04 | 2015-05-04 | Polarisation modulation analysis measuring apparatu |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205192618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272284A (en) * | 2020-03-11 | 2020-06-12 | 西安应用光学研究所 | Large-caliber laser polarization characteristic measuring instrument |
-
2015
- 2015-05-04 CN CN201520297160.7U patent/CN205192618U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272284A (en) * | 2020-03-11 | 2020-06-12 | 西安应用光学研究所 | Large-caliber laser polarization characteristic measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20170504 |