A fully automatic image-type sky polarized light test system
A test system, polarized light technology, applied in the direction of optical radiation measurement, measuring the polarization of light, measuring devices, etc., can solve the problem of low imaging quality
Active Publication Date: 2018-10-16
DALIAN UNIV OF TECH
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to use the high imaging performance of the SLR camera to solve the problem of low imaging quality caused by long-term exposure of industrial cameras
Add a polarizer bracket to the front of the fisheye lens to solve the problem of reflection of polarized light before entering the lens
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[0016] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.
[0017] like figure 1 As shown, the present invention includes a polarizer 1, a polarizer bracket 2, a hollow shaft 3, a fisheye lens 4, a gear set 5, a bearing set 6, an upper and lower support plate bracket 7, a quick release plate 8, a SLR camera 9, and a camera shutter control Switch 10, 5V single-chip microcomputer development board battery 11, upper support plate 12, support column 13, lower support plate 14, stepping motor 15, fixing bolt 16, single-chip microcomputer development board 17 and 24V stepping motor battery 18. The polarizer, polarizer bracket, hollow shaft, gear set, bearing set, upper support plate, support column, lower support plate, and stepping motor form the polarizer rotation mechanism, and the single-chip microcomputer development board is used to control the operation of the syst...
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The invention provides a fully automatic image-type sky polarized light testing system, which belongs to the technical field of optical and electronic testing, and is particularly suitable for collecting sky light polarization mode data in weak light environments. The test system mainly includes a polarizer rotation mechanism, a SLR camera, a fisheye lens, upper and lower support plate brackets and a single-chip microcomputer development board. Timer 0 of the microcontroller development board controls the generation of PWM waves, thereby controlling the stepper motor to achieve precise positioning. Timer 1 controls camera exposure according to the exposure time given in the exposure array. Timer 2 controls the collection waiting time of adjacent data groups according to the given data collection interval. The invention has the characteristics of simple structure, small volume, high degree of full automation and the like. The present invention has unique advantages when collecting polarized pattern data of moonlight in a field environment.
Description
technical field [0001] The invention is a fully automatic image-type sky polarized light testing system, which belongs to the technical field of optical and electronic testing, and is suitable for testing the polarization mode of sky light, especially for testing the polarization mode of moonlight under weak light conditions. Background technique [0002] At present, the test systems for the distribution pattern of polarized light in the sky mainly include image-type and point-source test systems. Although the point source test system can accurately test the polarization mode of a specific point in the sky, it has the disadvantages of continuously adjusting the test altitude and azimuth angle, poor positioning accuracy, long test time, and large errors. Therefore, the image-type test system that can quickly acquire the polarization mode of the whole sky with a large viewing angle is widely used. However, the existing image-type polarized light test system has problems such ...
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IPC IPC(8): G01J4/00
CPCG01J4/00G01J4/04
Inventor 崔岩赵金勇张西光褚金奎关乐张然
Owner DALIAN UNIV OF TECH