Topic summary
Wavefront sensor
Extracted from the Wikipedia article Wavefront.
Wavefront sensor and reconstruction techniques
A wavefront sensor is a device which measures the wavefront aberration in a coherent signal to describe the optical quality or lack thereof in an optical system. There are many applications that include adaptive optics, optical metrology or measurement of the aberrations in the eye. In this approach, a weak laser source is directed into the eye and the reflection off the retina is sampled and processed. Another application of software reconstruction of the phase is the control of telescopes through the use of adaptive optics.