Color diffraction test device and test method thereof, and color diffraction test system

A color diffraction test device, comprising:

• an objective table configured to drive a to-be-tested sample to rotate in a plane where the objective table is located during a test process, wherein a rotation axis of the objective table is a perpendicular bisector of the objective table, a test point of the to-be-tested sample is on the perpendicular bisector of the objective table;
• a light source configured to irradiate the to-be-tested sample, wherein an orthographic projection of a light spot center of the light source on the objective table roughly coincides with a center of the objective table;
• a measurement instrument, wherein the measurement instrument and the light source are located on a same side of the objective table, an orthographic projection of a measurement center of the measurement instrument on the objective table roughly coincides with the center of the objective table, and an orthographic projection of the measurement instrument on the objective table does not overlap with an orthographic projection of the light source on the objective table;
• the measurement instrument is configured to test a color diffraction phenomenon of the to-be-tested sample irradiated by the light source;
• wherein the color diffraction test device further comprises:
• a vertical guide rail, wherein the vertical guide rail is on the perpendicular bisector of the objective table, and the light source is disposed on the vertical guide rail;
• the light source moves on the vertical guide rail to change a distance from the light source to the to-be-tested sample;
• wherein the color diffraction test device further comprises:
• an airtight light-shielding box, inner surfaces of the airtight light-shielding box comprise an upper surface and a lower surface opposite to each other;
• wherein,
• the objective table is disposed on the lower surface, the vertical guide rail is disposed on the upper surface.