Radiant energy – Infrared-to-visible imaging
Patent
1989-03-20
1990-08-07
Howell, Janice A.
Radiant energy
Infrared-to-visible imaging
250341, 250342, G02F 125
Patent
active
049470442
ABSTRACT:
A method and apparatus for covertly viewing a target using transmission of infrared radiation through an atmosphere having given atmospheric conditions. The target is illuminated with only a selected frequency band of infrared radiation having the least effective transmittance properties of all frequencies of infrared radiation in the given atmospheric conditions. This selected frequency band of infrared radiation is reflected from the target and detected. The selected frequency band of infrared radiation may be generated by generating a broad spectrum of infrared radiation and filtering this broad spectrum to output only the selected frequency band of infrared radiation. Alternatively, a laser may be employed to output the selected frequency band of infrared radiation.
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Hanig Richard
Howell Janice A.
The Boeing Company
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