Manufacture of optical storage medium master for contact copying, by forming volume hologram in volume layer by interference of incident laser light
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Optical element and method for its production
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Optical storage medium
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Reading of holographic markings formed as security markings on such as a banknotes using a laser
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humidity sensor
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Security system, in particular for documents of value
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information carrier
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Optical storage medium
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Information holographic display system with an intermediate image holographic screen and method of manufacture of the holographic screen
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Method for producing a holographic screen for the autostereoscopic or stereoscopic reproduction of pictures and motion pictures
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Method for producing a holographic screen for the autostereoscopic or stereoscopic reproduction of pictures and moving pictures
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Holographic display system for displaying information
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Computer generated security feature for application to document or banknote, uses computer-generated hologram algorithm to calculate interference pattern applied to carrier
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Holographic strip e.g. for banknote etc., has sequence of adjacent individual holograms which can be read by relative movement of laser
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Optical authenticity feature
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A method and an apparatus for fabricating a surface structure, particularly a holographic surface structure, on a substrate
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Security element for documents and processes for its manufacture
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Device for the production of individual holograms for securing documents
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Method and device for producing a surface structure, in particular a holographic surface structure, on a substrate
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Method for checking the authenticity of a hologram and reading device for carrying out the method
