Adaptive phase mask for producing a phase shift in incident...

Details Adaptive phase mask for producing a phase shift in incident... Adaptive phase mask for producing a phase shift in incident...

2006-12-12

2008-10-14

Spector, David N (Department: 2873)

Optical: systems and elements

Glare or unwanted light reduction

With mirror

C359S849000, C359S853000

Reexamination Certificate

active

07434947

ABSTRACT:
Systems and methods for shifting the phase of incident light to induce a continuous phase variation in an azimuthal direction. A phase mask apparatus includes a conical mirror assembly and a flexible annular reflector that substantially surrounds at least a portion of the conical mirror assembly. The flexible annular reflector is configured to receive reflected light from the conical mirror assembly. A plurality of driver assemblies are operative to deform the flexible annular reflector as to produce the desired phase response in light reflected from the annular reflector.

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Mawet, et al.: “Annular Groove Phase Mask Coronagraph”; The Astrophysical Journal, Nov. 10, 2005/vol. 633, pp. 1191-1200.
Foo, et al.: “Optical Vortex Coronagraph”; Optics Letters, vol. 30, No. 24, Dec. 15, 2005, pp. 3308-3310.

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