Stereo-projection device, stereo-projection system and method for projecting stereoscopic images
AssigneeInfitec GmbH
InventorsArnold Simon, Johann Krauter, Simeon Brinkmann, Klaus Rohwer
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Abstract
A stereo-projection device comprises at least one light source, at least one collimator for converting visible light generated by the light source into light with a substantially parallel beam path, and at least one interference filter which is transparent at a given angle of incidence for at least one wavelength interval having an interval width of at most 50 nm and which is designed to cross the light with the substantially parallel beam path.
Claims18
A stereo projection device comprising:
- at least one light source,
- at least one collimator for converting visible light generated by the at least one light source into light with a substantially parallel ray path,
- at least one interference filter that is transparent at a given angle of incidence for at least one wavelength interval each having an interval width of at most 50 nm and disposed in the substantially parallel ray path, and
- at least three color filters disposed on a color wheel, the color wheel disposed in the substantially parallel ray path,
- wherein two disjoint wavelength intervals are established for each of the at least three color filters from the visible light.
A method for projecting stereoscopic images or 2D images that has the following steps:
- a) Generation of visible light,
- b) Conversion of generated visible light into light having a substantially parallel ray path,
- c) Filtering of the light having the substantially parallel ray path with at least one interference filter that is transparent at a given angle of incidence for at least one wavelength interval having an interval width of at most 50 nm and that is disposed in the substantially parallel ray path, wherein the at least one interference filter is disposed on a rotatable wheel,
- d) Filtering of the light from the at least one interference filter having the substantially parallel ray path with a color wheel having at least three color filters,
- e) Establishing two disjoint wavelength intervals for each of the at least three color filters from the visible light based on the combination of color filter and interference filter in the substantially parallel ray path.
A stereo projection device comprising:
- at least one light source;
- at least one collimator for converting visible light generated by the at least one light source into light with a substantially parallel ray path;
- at least one interference filter that is transparent at a given angle of incidence for at least one wavelength interval having an interval width of at most 50 nm and disposed in the substantially parallel ray path,
- wherein the interference filter is part of a rotatably mounted wheel, or in which the interference filter is arranged so as to be stationary, or in which the interference filter is electrically switchable,
- wherein the stereo projection device additionally has a color wheel;
- and
- a synchronization unit for synchronizing color wheel motion is provided that holds the color wheel in a position with a transparent, achromatic filter in the ray path or implements a switch between left and right stereoscopic images synchronously with a point in time when the blue filter of the color wheel is located in the substantially parallel ray path.
Dependencies are inferred from the claim text.