| US 7,482,572 B1 | ||
| Transmissive diffuser with a layer of polytetrafluoroethylene on the output surface for use with an on-orbit radiometric calibration | ||
| Roy P. Galvin, Leo, Ind. (US) | ||
| Assigned to ITT Manufacturing Enterprises, Inc., Wilmington, Del. (US) | ||
| Filed on Jul. 25, 2005, as Appl. No. 11/188,372. | ||
| Int. Cl. H01J 3/14 (2006.01); H01J 5/16 (2006.01); H01J 40/14 (2006.01) | ||
| U.S. Cl. 250—216 [250/203.4; 359/599; 359/707] | 16 Claims |
| 1. A flux diffuser for radiometrically calibrating an imaging sensor using the sun as a calibration light source, the flux
diffuser comprising
a fiberglass cloth including input and output surfaces,
the input surface receiving solar irradiance,
the output surface providing diffused scattered light to a radiometer, and
a layer of polytetrafluoroethylene (PTFE) disposed on top of the output surface.
|