Title :
Pyroelectric imaging
Author :
Kulwicki, Bemard M. ; Amin, Ahmed ; Beratan, Howard R. ; Hanson, Charles M.
Author_Institution :
Texas Instruments Inc., Attleboro, MA, USA
fDate :
30 Aug-2 Sep 1992
Abstract :
The application of pyroelectric detectors to infrared imaging is reviewed, with emphasis on progress over the last several years. It is noted that pyroelectric detection represents a significant technology for infrared imaging in the 8-14-μm atmospheric window. Detector materials of interest include Ba1-xSrxTiO3 PbSc1/2Ta1/2O3, PbZr1-x TixO3 and PbTiO3. The first two materials typically operate near the phase transition temperature, with DC bias applied. Lead (zirconate) titanates are poled and operate without bias well below their transition temperature. A principal objective of work on pyroelectric imaging has been to produce low-cost infrared cameras which are capable of delivering television-quality images and which operate near room temperature without requiring costly cooling systems. Good progress has occurred toward achieving this objective. Efforts to produce hybrid detectors employing reticulated barium strontium titanate ceramics are discussed
Keywords :
barium compounds; infrared imaging; lead compounds; pyroelectric devices; scandium compounds; strontium compounds; 8 to 14 micron; Ba1-xSrxTiO3; PbScTaO3; PbTiO3; PbZr1-xTixO3; atmospheric window; detector materials; direct current bias; hybrid detectors; infrared imaging; low-cost infrared cameras; phase transition temperature; pyroelectric detectors; pyroelectric imaging; television-quality images; Barium; Cameras; Infrared detectors; Infrared imaging; Lead; Optical imaging; Pyroelectricity; Strontium; Temperature; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 1992. ISAF '92., Proceedings of the Eighth IEEE International Symposium on
Conference_Location :
Greenville, SC
Print_ISBN :
0-7803-0465-9
DOI :
10.1109/ISAF.1992.300607
