Light valve projection apparatus and dielectric polariser
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Light modulator
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Vacuum chamber system
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Apparatus and a process for recording photometric data that is positioned in succession or in adjacent fashion on a page-like or strip-like print
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Device for measuring small currents and current differences
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Hand-held densitometer
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Method and device to determine the required quantity of printing ink for one image in offset printing
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Method and apparatus for obtaining half-tone dot percentages
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Photometrical method and computer controlled photometer
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Device for the analysis of printing test strips
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Illumination device for projection means
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Method for the determination of the distances between the color coordinates of two halftone regions printed with a printing machine and method for monitoring or adjusting the color printing of a printing machine
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Television signal processing circuit with alternate signal paths - initiates switching between two signal paths dependent on detected signal level
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Compensating circuit for correcting picture faults of an image projection system
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Process for the cryptographic processing of data and cryptographic systems
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win lens condenser for projectors
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Method of exposure control and photographic colour copier
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Manual device for the determination or measurement of photometric data using a measuring head
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Manual device for the detection of optical reflection properties
