pyroelectric detector, <for optical radiation>
thermal detector that utilizes the time rate of change of the spontaneous electric polarization, or of induced long-lived polarization, of certain dielectric materials, caused by a temperature change
Note 1 to entry: This entry was numbered 845-05-49 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-1006 in CIE S 017:2011.