Large field-of-view stray light PST (point source transmittance) testing method and device
A test device and stray light technology, applied in the optical field, can solve the problems of low test accuracy, small test range, consistent test conditions and use conditions, etc., and achieve the effect of breakthrough in test accuracy
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[0026] The invention provides a large field of view stray light PST testing method, the method comprising:
[0027] 1) The responsivity E of the illuminance at the entrance pupil when the target at the collection point is not in the optical system to be tested o ;
[0028] 2) Install and adjust the position of the optical system to be tested, and collect the responsivity E generated at the image plane of the optical system to be tested when the target passes through the optical system to be tested and is irradiated by stray light at different positions of the field of view. d (θ);
[0029] 3) According to the formula Calculate the PST(θ) value of the optical system under test with the field angle θ outside the field of view.
[0030] At the same time, the present invention provides a large-field stray light PST testing device based on the method while providing a large-field stray light PST test method. see figure 1 , the large field of view stray light PST device provided...
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