Optics: measuring and testing – By light interference – Having wavefront division
Reexamination Certificate
2006-09-12
2006-09-12
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
Having wavefront division
Reexamination Certificate
active
07106457
ABSTRACT:
An achromatic shearing phase sensor generates an image indicative of at least one measure of alignment between two segments of a segmented telescope's mirrors. An optical grating receives at least a portion of irradiance originating at the segmented telescope in the form of a collimated beam and the collimated beam into a plurality of diffraction orders. Focusing optics separate and focus the diffraction orders. Filtering optics then filter the diffraction orders to generate a resultant set of diffraction orders that are modified. Imaging optics combine portions of the resultant set of diffraction orders to generate an interference pattern that is ultimately imaged by an imager.
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Stahl H. Philip
Walker Chanda Bartlett
Bergen Peter J. Van
Detschel Marissa J
McGroary James J.
The United States of America as represented by the Administrator
Toatley , Jr. Gregory J.
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