The present invention provides a device and method for measurement of an aspheric compensator transmission
wavefront equation. The device comprises a phase shift interferometer, a
distance measurement interferometer and a reference sphere
assembly. The aspheric compensator is arranged between the phase shift interferometer and the reference sphere
assembly, and the aspheric compensator, the phase shift interferometer and the reference sphere
assembly are coaxially arranged; the reference sphere assembly is moved along the direction of an
optical axis, and the reference sphere assembly and the aspheric compensator form an annular surface-shaped figure; and the measurement is performed through the
distance measurement interferometer referring to the
relative displacement of the sphere assembly, and the phase shift interferometer employs the annular surface-shaped figure and the
relative displacement to calculate the aspheric compensator transmission
wavefront equation. The device and method for measurement of the aspheric compensator transmission
wavefront equation can realize the measurement of the aspheric compensator transmission wavefront so as to ensure the correction of the aspheric compensator prior to the aspheric
surface processing, avoid that the aspheric compensator
processing error causes severe influence on a final optical
system; and moreover, the
measurement precision of the measurement method is high, the cost of the
measurement device is low, and the device and method for measurement of the aspheric compensator transmission wavefront equation are convenient to operate.