Neu-Ulm, Germany
Neu-Ulm, Germany

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Simon A.,INFITEC GmbH | Jorke H.,INFITEC GmbH
Digest of Technical Papers - SID International Symposium | Year: 2011

We demonstrate a significant improvement of the color and transmission performance of a complementary interference filter system used for stereoscopic imaging. A 3D transmission of 30% for a UHP lamp projection system was achieved. The differences in color and luminance between left and right filter were minimized. © 2011 SID.


Simon A.,INFITEC GmbH | Prager M.G.,INFITEC GmbH | Schwarz S.,INFITEC GmbH | Fritz M.,INFITEC GmbH | Jorke H.,INFITEC GmbH
Digest of Technical Papers - SID International Symposium | Year: 2010

A novel stereo 3D LCD for passive interference filter glasses is presented. A demonstrator based on a standard 120Hz LCD was set up. Stereoscopic image separation was realized in a time-sequential mode using a LED-based scanning backlight with two complementary spectra. A stereo brightness of 10 cd/m 2 and a channel separation of 30:1 were achieved. © 2010 SID.


Simon A.,Infitec GmbH | Jorke H.,Infitec GmbH
Proceedings of the International Display Workshops | Year: 2011

3D-projection systems usually provide alternating image frames and black frames for each eye. At 120 Hz mode flickering is still perceived. The wavelength multiplexing technology offers the possibility to mix the color sequence of left and right images, so that flickering is minimized. Solutions for 3-Chip systems will be presented.


Jorke H.,Infitec GmbH | Simon A.,Infitec GmbH
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

The goal of this work was the optimization of brightness and colors performance of the interference filter system for 3D projection. Special emphasis was on avoiding, or at least reducing, the need for color correction, which was one of reasons for low luminous efficiencies in the past. On the base of datasets for various projectors (DLP, LCoS, LCD) and lamps (UHP and Xenon), the optimization for a high efficiency stereoscopic interference filter system was carried out. Focus of our study was on three by four (3-4) filter system. We also examined filter designs with higher numbers of transmission bands up to seven per filter. The results show that the 3-4 band filters design exhibits the highest efficiency of all inherently color balanced filter systems because of a minimum number of gaps between adjacent transmission bands. Results also revealed that Xenon lamp based systems and UHP lamp based systems have different optimum filters. However, differences are such small that it becomes possible to cover both systems by a unitary type of 3D glasses lenses. © 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).


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.


A viewing device for a stereo projection system, having a first and a second viewing window, each having an optically filtering filter layer system, wherein each viewing window has a filter spectrum in the visual spectral range having a plurality of pass bands that are separated from each other by blocking regions, and wherein each pass band of the filter spectrum of the first viewing window is covered by an associated blocking region of the filter spectrum of the second viewing window. Each filter layer system can be designed as an absorption filter layer system having a plurality of substances absorbing in differing spectral ranges, wherein at least one of the absorbing substances is a cyanine dye in the supramolecular configuration of a J-aggregate.


Eye-glasses for viewing stereoscopic images or a perspective sub-image of a stereoscopic image, comprising at least one interference filter that has at least one photosensitive polymer film and at least two separated filter regions, said filter regions being superimposed along at least one normal line that stands vertically on a first outer surface of the interference filter, between a first point at which the normal line pierces the first outer surface and a second point at which the normal line pierces a second outer surface of the interference filter after having passed through said interference filter proceeding from the first point, and said filter regions being, along said normal line, at least substantially impermeable to a respective predetermined wavelength interval of the electromagnetic spectrum.


Patent
Infitec Gmbh | Date: 2013-01-22

A display device for displaying stereoscopic images is provided, wherein partial stereoscopic images are generated in spectral ranges at least partially different from each other, and wherein narrow-band emitting emission elements are present for generating images, and wherein different emission elements are present for generating spectrally narrow-band optical radiation in different spectral ranges, of which at least one comprises a light-converting material excited by an excitation element for emitting optical radiation.

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