Kaiyu Yang, Ning Jin, Ling Cao, Man Xu. Optimization Design of Stop Aperture Shape for Uncooled Infrared Detector[J]. Acta Optica Sinica, 2020, 40(8): 0811002
- Acta Optica Sinica
- Vol. 40, Issue 8, 0811002 (2020)
Fig. 1. Schematic of stray radiation and stop aperture of uncooled infrared detector
Fig. 2. “Pot cover effect” caused by stray radiation of uncooled infrared detector
Fig. 3. Transmission of radiation energy between two surfaces
Fig. 4. Spatial rectangular coordinate system for calculation of stray radiation transmission path
Fig. 5. Stray radiation emissive region model
Fig. 6. Variable elements for describing stop aperture shape
Fig. 7. Flow chart for optimizing stop aperture shape by interval exhaustion method
Fig. 8. Dimensions (unit:mm). (a) Radiant surface of case; (b) plane of front baffle
Fig. 9. Stop aperture shape after optimization
Fig. 10. Distribution of stray irradiance along diagonal line of FPA. (a) Without stop; (b) with stop
Fig. 11. Distribution of stray irradiance on FPA. (a) Without stop; (b) with stop
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Table 1. Data input for optimization of shape of stop aperture
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