Nipkow discn.
/ˈnɪpkɒf ˌdɪsk/, /ˈnɪpkɒv ˌdɪsk/, U.S. /ˈnɪpˌkoʊ ˌdɪsk/ Originally: a scanning disc, used in some early television transmitters and receivers, which has a line of small apertures near the circumference arranged in a spiral of one complete turn, so that on each revolution of the disc an area is scanned equal in height to the radial distance between the first and last apertures (now historical). Later also: a similar disc used in some kinds of scanning microscope.
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society > communication > broadcasting > television > transmitting or receiving apparatus > [noun] > scanning devices
mirror drum1927
scanning disc1927
scanner1929
Nipkow disc1934
line scan1938
scanning coil1938
1934 J. H. Reyner Television xiv. 161 Until recent times most of the Continental systems..have been of the Nipkow disc type, and in that main respect similar to the Baird system.
1962 G. A. T. Burdett Automatic Control Handbk. xxi. 6 A development of the Nipkow disc has recently been produced in the U.S.A. for use as a slow-scan device for the transmission of documents.
1987 Nature 9 July 183/2 Various approaches have been taken to develop a high speed scanning confocal microscope, from the use of a Nipkow disk..to the use of electromechanically driven beam deflection systems.
2001 Ophthalmol. Times (Nexis) 15 Aug. 63 The ASL unit is a scanning spot that uses a Nipkow disk.
This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).
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