Active imaging system with Faraday filter

Patent · Tue Apr 13 00:00:00 EDT 1993

OSTI ID:6227600

Snyder, J J

An active imaging system has a low to medium powered laser transmitter and receiver wherein the receiver includes a Faraday filter with an ultranarrow optical bandpass and a bare (nonintensified) CCD camera. The laser is locked in the vicinity of the passband of the Faraday filter. The system has high sensitivity to the laser illumination while eliminating solar background.

• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 5202741; A
• Application Number: PPN: US 7-905989
• OSTI ID: 6227600
• Resource Relation: Patent File Date: 29 Jun 1992
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
OPTICAL SYSTEMS
DESIGN
BACKGROUND RADIATION
CAMERAS
CHARGE-COUPLED DEVICES
IMAGES
LASER RADIATION
OPTICAL FILTERS
SOLAR RADIATION
ELECTROMAGNETIC RADIATION
FILTERS
RADIATIONS
SEMICONDUCTOR DEVICES
STELLAR RADIATION
440600* - Optical Instrumentation- (1990-)