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Kinoform

Assignee: Siemens Building Technologies AG
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Filing: 1982-09-15
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Granted: —
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Expires: 2002-09-15
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Abstract

Abstract Translated from German Phasenstruktur und Herstellungsverfahren eines Kinoforms, das bei Bestrahlung mit kohärenten Strahlen eine einzige Abbildung erzeugt, wobei alle Bildpunkte der Abbildung Teil einiger wenigen Bildflecken dieser Abbildung sind und ihre Strahlungsintensität innerhalb eines jeden Bildfleckens annähernd konstant ist und eine beschränkte Anzahl, z.B. zwei, diskreter Pegel besitzt. Ein solches Kinoform kann als Echtheitsmerkmal für Wertdokumente verwendet werden. Phase structure and method of manufacture of a kinoform that produces a single image when irradiated with coherent rays, where all pixels of the image are part of a few image spots of this image and their radiation intensity is approximately constant within each image spot and a limited number, e.g. has two discrete levels. Such a cinema form can be used as an authenticity feature for documents of value.

Inventors

  • 👤 Heinrich Peter Baltes
  • 👤 Michel Vincent Romerio

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 09:04
CPC Classifications
G; G07; G07D; G07D7/00; G07D7/20; G03; G03H; G03H1/00; G03H1/04; G03H1/08; G03H1/0841; G06; G06K; G06K1/00; G06K1/12; G06K1/126; G06K19/00; G06K19/06; G06K19/08; G06K19/10; G06K19/16; G07D7/06; G07D7/12; G07F; G07F7/00; G07F7/08; G07F7/086; G03H2001/085

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