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High precision linear polarization radiometer

A linear polarization and radiometer technology, which is applied in the field of high-precision linear polarization radiometers, can solve the problem that calibration uncertainty needs to be optimized, and achieve the effect of ensuring the uniformity of the field of view and reducing systematic errors and random errors.

Inactive Publication Date: 2015-11-11
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the possible weak polarization sensitivity effects of filters, detectors, and other optical components, the existing dense analyzers still need to perform relative corrections on the responsivity of each angle of analysis, that is, calibration of the degree of polarization is required. Calibration uncertainty needs to be optimized

Method used

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  • High precision linear polarization radiometer

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention will be further described through embodiment.

[0021] Such as figure 1 As shown, a high-precision linear polarization radiometer includes a filter wheel 4, the filter wheel 4 is connected to a motor 6, a position sensor 5 is provided on one side of the filter wheel 4, and the positive side of the filter wheel 4 Along the direction of the incident light, there are window plate 1, aperture stop 2, and Glan-Taylor prism 3 in sequence from top to bottom. A photoelectric receiving system is provided directly below the filter wheel 4. The photoelectric receiving system includes a parabolic reflector 7. A field diaphragm 8, a focusing lens 9, and a two-color detector 10 are sequentially arranged on the reflected optical path of the parabolic mirror 7, and the signal output terminals of the two-color detector 10 and the position sensor 5 are connected to the control acquisition system 11.

[0022] A method ...

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Abstract

The invention discloses a high precision linear polarization radiometer and a use method thereof. The high precision linear polarization radiometer comprises a filter wheel. The filter wheel is connected with a motor. A position sensor is arranged on one side of the filter wheel. A window film, an aperture diaphragm and a Glan-Taylor prism are successively arranged from top to bottom along the incident light direction just above the filter wheel. A photoreceptor system is arranged just below the filter wheel. The photoreceptor system comprises a parabolic reflector. A field diaphragm, a focusing lens and a dual-color detector are successively arranged on the reflection light path of the parabolic reflector. The dual-color detector and the signal output end of the position sensor are connected with a control acquisition system. Compared with a traditional polarization radiometer, the high precision linear polarization radiometer provided by the invention does not require the advantage of polarization degree calibration, and can be theoretically used as the carrier of a standard linear polarization source in the form of an instrument.

Description

technical field [0001] The invention belongs to the field of optical testing and measurement, and relates to a high-precision linear polarization radiometer. Background technique [0002] With the development of polarization measurement technology, polarization instruments are widely used in remote sensing and military fields. Traditional polarization instruments need to use various polarization light sources (integrating spheres, polarization boxes, and polarizers, etc.) for polarization calibration to meet the needs of high-precision polarization analysis. Change. At present, all kinds of polarized light sources and polarization scalers have certain uncertainties, and their polarization transmission will be limited by the polarized light source and the optical-mechanical characteristics of the instrument under test, which is inconvenient. [0003] Ordinary linear polarization measurement instruments are designed with three or four analysis angles to meet the acquisition ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J4/00
Inventor 孙斌杨洪春高翔华朱苗苗胡亚东孟炳寰崔卫华洪津
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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