Thermal imaging with pyroelectric vidicons
Abstract
The principles of operation of a pyroelectric vidicon thermal imager are examined. The pyroelectric target is a temperature-dependent surface-polarization-charge generator, which thermally integrates the infrared signal. In connection with the characteristics of pyroelectricity, the vidicon camera responds only to changes in incident radiation. Optical modulation by a panning or chopping method is, therefore, required to image a stationary thermal scene. The characteristics of panning and chopping systems are discussed and an assessment is provided concerning the status of pyroelectric vidicons.
- Publication:
-
IEEE Transactions on Electron Devices
- Pub Date:
- October 1977
- DOI:
- 10.1109/T-ED.1977.18983
- Bibcode:
- 1977ITED...24.1221G
- Keywords:
-
- Image Processing;
- Infrared Imagery;
- Light Modulation;
- Pyroelectricity;
- Thermal Mapping;
- Vidicons;
- Image Motion Compensation;
- Imaging Techniques;
- Modulation Transfer Function;
- Polarization (Charge Separation);
- System Effectiveness;
- Television Systems;
- Temperature Effects;
- Instrumentation and Photography