Optical: systems and elements – Mirror – Plural mirrors or reflecting surfaces
Patent
1998-10-12
1999-11-09
Shafer, Ricky D.
Optical: systems and elements
Mirror
Plural mirrors or reflecting surfaces
359861, 359845, 250216, 250228, G02B 510, H01J 314
Patent
active
059800496
ABSTRACT:
Radiant energy sensor is protected from severe environments with a radiant energy sensor assembly that off-sets the sensor from the environment. The sensor assembly includes a radiant energy sensor, a pair of reflective walls facing one another, one of the walls having a transmissive aperture for receiving radiant energy over a wide angle of incidence, an entry, the other wall having a transmissive aperture for passing energy from behind the wall to the sensor, an exit, with the walls having the reflection characteristics such that the radiant energy entering the entry aperture at any angle is always reflected to the exit aperture. The reflective walls may be paraboloids or Fresnel surfaces in geometry.
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McDonnell Douglas Corporation
Shafer Ricky D.
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