New high efficiency interference filter characteristics for stereoscopic imaging

Abstract

oal of this work was the optimization of brightness and colors performance of the interference filter system for 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

Development of a 3D HUD using a tunable bandpass filter for wavelength multiplexing

“…The most suitable setup for a see‐through system seems to be the wavelength multiplexing approach . By using a bandpass filter for each color and each eye, it is possible to achieve a transmission rate of 60% (and more if narrow band sources are used) while using only a light passive component on head (Fig.…”

“…Spectral separation principle: Left and right images are coded in spectrally independent wavelengths …”

“…Projection system with two projectors and 3D spectral glasses. Spectral separation principle: Left and right images are coded in spectrally independent wavelengths 3. …”

Investigation of TiO2 Thin Film Deposited by Microwave Plasma Assisted Sputtering and Its Application in 3D Glasses

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