2. Infrared detector characteristics

Figure 1 - Flux-voltage-current characteristic

Figure 2 - Time response

Figure 3 - Geometric extent

Figure 4 - Spectral response

Figure 5 - Source-detector conjugation

Figure 6 - Calculation of noise equivalent temperature difference (NETD)

Figure 7 - Detection

Figure 9 - Noise equivalent illuminance (NEI) measurement

Figure 10 - Optical assembly for NEI and NETD measurement

Figure 11 - Noise equivalent temperature difference (NETD) measurement

Figure 12 - MRTD bar patterns

Figure 13 - Measurement of minimum separable temperature difference (MRTD)

Figure 14 - Measurement of minimum detectable temperature difference (MDTD)

Figure 15 - Measuring relative spectral response

Figure 16 - How continuous variable filters work (example: Circular variable filter from Optical Coating Limited)

Figure 17 - Spatial resolution measurement

Figure 18 - Evaluating the modulation rate of spatial resolution by observing the video signal

Figure 19 - Line spreading function (LSF)

Figure 20 - Modulation transfer function

Figure 21 - Direct measurement of the modulation transfer function

Figure 22 - Measurement of MTF by Fourier transform of LSF

Figure 23 - Radiometric balance

Figure 24 - Signal-temperature calibration curve

Figure 25 - Calibration bench for infrared systems (doc. HGH)

Figure 26 - Signal-flux calibration curve

Figure 27 - Drift

Figure 28 - Test bench for military optronic systems (doc. HGH)