Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1991-03-06
1992-05-12
Fields, Carolyn E.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
359849, G01J 120
Patent
active
051130645
ABSTRACT:
A method and apparatus are disclosed for edge phasing an array of segments in a segmented primary telescope mirror using white light from a far field source and starting with the inner edge of each segment in the first ring of segments. The segments are individually phased for zero piston and tilt error with respect to the edge of a reference surface in the open center position of the telescope mirror, and proceeding from ring to ring by edge phasing one edge of each segment in each subsequent ring with an edge of a segment in a preceding ring that has been edge phased. After edge phasing of all segments in the telesope mirror array has been completed, full surface phasing can be achieved using a conventional Shack-Hartmann technique followed by finding the RMS best fit for each segment of the mirror array.
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Fields Carolyn E.
Jones Thomas H.
Manning John R.
The United States of America as represented by the Administrator
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