Optical Engineering · 1982 · 13 citations · 0 references
EngineeringBiomedical EngineeringElectrical EngineeringBiomedical OpticsOptoelectronicsUltrasonographyDigital Image ProcessingImage ProcessingImage SensorsInfrared InstrumentationOptical Transfer FunctionTransducer TechnologyDynamic RangeInfrared Image SensorsInfrared OpticsModulation Transfer FunctionModulation Transfer Function AnalysisPower InputResponse TimeTransducer Design
A passive visible to infrared image transducer is described which, for the first time, allows practical simulation of high resolution dynamic infrared imagery. A theoretical performance analysis is presented which indicates that an MTF (modulation transfer function) of 50% at 5 cycles/mm is achievable with a time response of less than 20 msec and a required input power of less than 2 mW/cm2 per simulated degree AT. Experimental results on working devices are reported which match theoretical predictions. Successful simulation of high speed real-world infrared imagery is described. Suggestions for future work which should further enhance resolution and dynamic range are presented.