Patent ID: 9063002
Filing Date: 2015-06-23
Classification: G01J

Abstract:
1. A hybrid wavefront sensor comprising: a Shack-Hartmann wavefront sensor having a SH-input pupil and a re-imaged SH-output pupil comprising at its distal end a lenslet array for dicing an incident image wavefront into separate segments; a Zernike wavefront sensor having a Z-input pupil and a Z-output pupil, the Zernike wavefront sensor being capable of dynamically shifting the phase of a portion of the image wavefront having a diameter on the order of λ/D, where D is the SH-input pupil diameter; a relay optical system disposed proximal to the lenslet array and designed such that the image wavefront from the SH-input pupil is relayed one-to-one to the Z-input pupil and the Z-output pupil is relayed one-to-one to the lenslet array of the SH-output pupil; a detector in optical alignment with the distal side of the lenslet array for imaging the incident image wavefront; and an electronic controller in signal communication between the Zernike wavefront sensor and the detector for correlating the phase shift imposed on the imaged wavefront.