BRDF automatic test system and test method

An automatic test system and detection system technology, applied in the field of spectral measurement, can solve the problems of poor measurement accuracy, limited test distance and detection field of view, etc.

Inactive Publication Date: 2019-02-15
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0003] The first object of the present invention is to provide a BRDF automatic test system to solve the technical

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  • BRDF automatic test system and test method
  • BRDF automatic test system and test method

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[0056] In order to make the technical solution and advantages of the present invention clear to those skilled in the art, the technical solution of the present invention will be described in detail below in conjunction with the drawings and examples, but it is not used to limit the protection scope of the present invention.

[0057] see figure 1 , the BRDF automatic test system provided by the present invention includes a solar simulator 1, an electric displacement platform 2, a detection system 3, a BRDF spectrum automatic acquisition system 4, and a BRDF data processing system 5; wherein: the front end of the light outlet of the solar simulator 1 is placed There is an aperture 36, and the solar simulator is used as an incident light source to emit uniform and parallel visible light beams, and after passing through the aperture 36 to limit the beam, the incident light is irradiated vertically to the sample surface of the electric displacement stage;

[0058] The solar simulat...

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Abstract

Disclosed are a BRDF (Bidirectional Reflectance Distribution Function) automatic test system and a test method. The test system comprises a solar simulator, an electric displacement table, a detectionsystem, a BRDF spectrum automatic acquisition system, and a BRDF data processing system. The solar simulator emits a visible light beam to irradiate a sample on the electric displacement table. The electric displacement table is used for realizing movement and rotation of the sample in a three-dimensional space. The detection system comprises a movable platform, a two-dimensional rotary platformmounted on the movable platform, a telescope, a fiber probe, and a spectrometer connected with the optical fiber probe through detection optical fibers. The BRDF spectrum automatic acquisition systemis used for controlling motions of the electric displacement table, so that the electric displacement table drives the sample to rotate at any angle in the space. The spectrometer controlling the detection system collects scattering spectrums at any angle of the sample. The BRDF data processing system is used for processing collected spectrum data to obtain BRDF data at any angle. The BRDF automatic test system is adjustable in detection distance, can achieve detection of long-distance and large-volume objects, and is high in detection precision.

Description

technical field [0001] The invention belongs to the field of spectrum measurement, and specifically relates to a BRDF automatic test system and a test method. The test system adopts a light source with a fixed relative position, and changes the relative angle between the sample and the detection end to realize the remote measurement of the scattering spectrum of the sample. And take polytetrafluoroethylene as the standard plate to calculate the automatic test system of sample BRDF. Background technique [0002] Since the BRDF was formally proposed, methods for measuring this function have become more and more advanced. Radiometer measurement was used in the early days, and now there are two main types of bidirectional reflectance distribution function measurement, one is the imaging BRDF measurement using a CCD digital camera; the advantage of this method is that the test field of view is wide, and it can Obtain multiple measurement data, greatly reducing the measurement ti...

Claims

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Application Information

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IPC IPC(8): G01N21/25
CPCG01N21/25
Inventor 谭勇宋薇贾强蔡红星石晶辛敏思姚治海任玉
Owner CHANGCHUN UNIV OF SCI & TECH
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