A 3D projection system based on complementary multiband bandpass filter
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Citation
戚李阳, 徐斌, 王元庆. 基于互补式多波段带通滤光片的 3D 投影显示系统 [J]. 光电工程, 2020, 47(7): 190334.
Keywords
- 3D display
- Complementary multiband bandpass filter (CMBF)
- Spectrum-multiplexing
- Projection system
- Crosstalk
- RGB (Red, Green, Blue)
- Special glasses
- Two projectors
- Thin film
- Nb2O5 (Niobium pentoxide)
- SiO2 (Silicon dioxide)
- Magnetron sputtering
- Optical spectrum
- Brightness
- Color gamut
- Color difference/Color aberration
- FPGA (Field-Programmable Gate Array)
- Stereoscopic vision/Stereopsis
- Binocular parallax
- Time-multiplexing
- Spatial-multiplexing
- Polarization-multiplexing
- Passband/Transmission band
- Stopband
- Thin film interference
- Spectral distribution
- Incident angle
- Color coordinates
- Chromaticity diagram
Brief
The article proposes a spectrum-multiplexing 3D projection system that uses complementary multiband bandpass filters (CMBFs) on two ordinary projectors and special glasses to achieve 3D viewing by separating left and right eye images spectrally, achieving an average crosstalk of 3%.
Summary
This paper introduces a new 3D projection system that uses special filters (CMBFs) on two regular projectors and in glasses to send slightly different light spectrums to each eye, creating a 3D effect. This spectrum-multiplexing method avoids issues of traditional 3D systems and achieved an average crosstalk of 3%, showing it's a viable way to create 3D visuals without special screens. The system's performance in terms of color and brightness was also evaluated, with suggestions for future improvements.
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