Stereo projection using interference filters is an advanced wavelength multiplexing approach, that specifically takes into account the nature of the human eye, which is characterized by three types of color receptors. Accordingly, the filters used to code image information for the left and for the right eye image have three narrow bands each. In the present paper the current status of the interference filter technique for stereo imaging is outlined.

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Abstract— Stereo projection using interference filters is an advanced wavelength multiplexing approach that specifically takes into account the nature of the human eye, which is characterized by three types of color receptors. Accordingly, the filters used to code image information for the left‐eye and for the right‐eye image have three narrow bands each. Wavelength multiplexing represents a modern approach by overcoming earlier drawbacks in the color reproduction of image‐separation methods such as anaglyph technologies. Unlike polarizing technologies, there is no need of polarization reservation or a restraint to the projection technology.

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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 timesequential mode using a LED-based scanning backlight with two complementary spectra. A stereo brightness of 10 cd/m² and a channel separation of 30:1 were achieved.