In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 34, No. 3R ( 1995-03-01), p. 1690-
Abstract:
The characteristics of a piezoelectric chopper utilizing a slit plate for a modulation-type pyroelectric infrared detector (M-type IR detector) were investigated. First, we discuss how the accuracy of the signal of the M-type IR detector is affected by the emissivity of the slit plate, for applications to noncontact temperature measurement. Then, the accuracy of the measurement can be improved by an optimum emissivity of the slit plate against changes in operating gate-source voltage of the field-effect transistor, when the ambient temperature of the detector is changed rapidly. Next, we study the change in the detecting area caused by the diffraction effect from the use of the slit plate by means of numerical simulation and experiments. The expansion of the detecting area due to the diffraction can be improved by an optimum design of the can structure.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.34.1690
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1995
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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