Holographic foil and method for producing same
AssigneeOSRAM Opto Semiconductors GmbH
InventorsStefan MORGOTT, Joachim REILL, Peter BRICK
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Abstract
Described is a holographic film (100) whose transmission and/or reflection properties vary periodically along at least one of its directions of principal extent, said film being designed for at least partial transmission (22, 28) of light (20, 26) of at least one first wavelength range that is irradiated from a multiplicity of periodically disposed illuminants (200) and that impinges on the holographic film (100). Also described are a lighting means (300), a backlighting means and a method for producing a holographic film (100).
Claims17
Holographic foil, whose transmission and/or reflection properties vary periodically in at least one of its main extension directions and which is designed to at least partially transmit light from at least one first wavelength range emitted by a multiplicity of periodically arranged lighting means and impinging upon the holographic foil.
Holographic foil, whose transmission and/or reflection properties vary periodically in at least one of its main extension directions and which is designed to at least partially transmit light from at least one first wavelength range emitted by a multiplicity of periodically arranged lighting means and impinging upon the holographic foil, wherein
- the holographic foil comprises a first multiplicity of periodically arranged regions which are formed as reflection holograms, and
- the holographic foil comprises a second multiplicity of periodically arranged regions which are formed as transmission holograms.
Dependencies are inferred from the claim text.