2003•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access
Wavefront sensing from spatial filtering at the focal plane
Richard Clare, R. Lane
Open publisher page 13 citations
Abstract
The pyramid wavefront sensor detects wavefront aberrations by subdividing the complex field at the origin of the focal plane into quadrants. This paper investigates wavefront sensors, such as the pyramid sensor, that subdivide the complex field at the origin of the focal plane into N equal segments. This can be physically realized with either an N-sided prism or by a lenslet array in the focal plane. An alternative reconstruction technique for the pyramid is also proposed to increase the performance of the sensor.