High-precision measurement device for radiometer diaphragm area

A measurement device and high-precision technology, applied in the field of optical radiation measurement, can solve the problems of measurement accuracy, cumbersome measurement process, complex measurement device, etc., to achieve the effect of simple measurement process, simplified experimental process, and reduced system uncertainty

Inactive Publication Date: 2014-02-19
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The present invention aims to solve the technical problems in the prior art that the measurement device is relatively complicated, the measurement proc

Method used

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  • High-precision measurement device for radiometer diaphragm area
  • High-precision measurement device for radiometer diaphragm area
  • High-precision measurement device for radiometer diaphragm area

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Example Embodiment

[0024] The inventive idea of ​​the present invention is:

[0025] Aiming at the relatively complicated characteristics of the effective area method measuring device, an improved measuring device is proposed. Replace the original single laser light source with a stack of semiconductor lasers to achieve a uniform illuminance light source system, directly forming a uniform illuminance light area, place the aperture diaphragm in this light area, and measure its radiation flux with an integrating sphere detector. The effective area method principle formula A=Φ / E, calculate the area of ​​the aperture stop.

[0026] The present invention will be described in detail below in conjunction with the drawings.

[0027] Such as figure 2 As shown, the measurement process of the high-precision measuring device for the diaphragm area of ​​the radiometer of the present invention is:

[0028] First, place the aperture stop on the support frame 10, while adjusting the support frame 10 at an appropriat...

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Abstract

The invention belongs to the optical radiation measurement field, and relates to a high-precision measurement device for a radiometer diaphragm area. The high-precision measurement device is an improvement of an active area method measurement device. The high-precision measurement device is formed by main components such as an even-illumination light source system achieved by stacking semiconductor lasers, a sample supporting frame, an integrating sphere and a detector. The high-precision measurement device has the advantages that the measurement process is simplified, the system uncertainty caused by each component in a complex measurement device is reduced, the diaphragm area is indirectly measured, the measured diaphragm area is an active area or radiation calculating area rather than a diaphragm mechanical area, and great improvement significances are achieved for practical application of diaphragm area measurement. The high-precision measurement device can be suitable for various systems requiring precise diaphragm area measurement, and is not just limited in measurement on the radiometer diaphragm area.

Description

technical field [0001] The invention relates to the field of optical radiation measurement, in particular to a high-precision measuring device for the diaphragm area of ​​a radiometer. Background technique [0002] Some radiological and photometric measurements are based on high-precision measurement of the area of ​​the precision diaphragm. The measurement accuracy of the area is an important factor that limits the measurement accuracy of radiometers and photometers, because the size of the aperture diaphragm limits the geometric area of ​​​​the incident light. , determines the incident area and the solid angle of the radiance when calculating the irradiance, so it is of great significance to measure the area of ​​the aperture diaphragm with high precision. [0003] At present, there are many devices for measuring the area of ​​the aperture stop. The more common one with high measurement accuracy is the measuring device of the effective area method, such as figure 1 . The...

Claims

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Application Information

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IPC IPC(8): G01B11/28
Inventor 方伟陈祥子杨振岭
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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