Optical vision effect testing apparatus
A testing device and visual technology, applied in teaching models, educational appliances, instruments, etc., can solve problems such as general fatigue
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[0017] Embodiment: the structure of the present invention is as figure 1 , figure 2 and image 3 As shown, it is composed of a test vehicle 1, a special track 2 for the operation of the test vehicle, and a test board 3. The test vehicle 1 is located on the special track 2, and the test vehicle 1 is provided with a head and neck for positioning the heads and necks of two testers. The internal positioning device, the test board 3 is located outside the track, the height of the test board 3 is different from the height of the tester, and there are 2 patterns with background colors on the test board 3, the 2 patterns are arranged up and down, the patterns are the same, and the sizes are different. Concentric circles composed of 3 identical line segments.
[0018] The head and neck positioning device is composed of a vertical shaft 4, a horizontal plate 5 and a vertical plate 6, the horizontal plate 5 is connected with the vertical shaft 4 through the horizontal plate adjustment...
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