Distortion calibration method for large field of view reflective free-form surface space camera
A space camera and distortion calibration technology, applied in measuring devices, instruments, etc., can solve problems such as unbearable cost and difficulty of development, incomplete compliance with prior laws, large size and weight of optical platforms, etc.
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[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0047] like Figure 1 to Figure 4 As shown, the distortion calibration method for a large field of view reflective free-form surface space camera of the present invention includes the following steps:
[0048] 1) Since the distortion calibration accuracy is closely related to the adjustment accuracy of the grid reticle 4 on the focal plane of the optical system 7 to be tested, it is necessary to firstly adjust the grid reticle with high precision on the focal plane of the optical system 7 to be tested. plate 4. first in figure 1 An optical interferometer equipped with a plane standard mirror is placed at the position of the measuring theodolite 1 shown, so that the interferometer, the optical system 7 to be measured, and the grid reticle 4 for scribing grid lines form a collimated interference optical path, such as figure 2 As shown, the principle of coll...
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