Complementary multi-band bandpass filters for 3D projection display system

Jing Ma; Tiezhu Bo; Chang Liu

doi:10.1117/12.2664635

4 April 2023 Complementary multi-band bandpass filters for 3D projection display system

Jing Ma, Tiezhu Bo, Chang Liu

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126171Z (2023) https://doi.org/10.1117/12.2664635
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

Based on the imaging principle of wavelength division 3D technology, a wide angle complementary three band pass filter films are designed. The three pairs of complementary passbands of the two filters can cover the RGB trichromatic spectral range exactly by simulation designing, and each pair of complementary passbands is staggered and hardly overlapped. Through the study of thin film materials, appropriate materials are selected as the equivalent spacer of Fabry Perot filter, which improves the energy dispersion phenomenon and the crosstalk effect of complementary filter at large angle of incidence, and comprehensively improves the passband transmittance and spectral coverage at large angle of incidence. The complementary filter was fabricated by RF magnetron sputtering and inductively coupled etching technology. The experimental test and analysis results show that the passband transmittance of the developed complementary three band pass filter film is more than 96% at 0° incidence, and the transmitted light conforms to the color balance index and meets the design requirements. The development of the filters is expected to further improve the imaging defects in 3D projection system.

Citation Download Citation

Jing Ma, Tiezhu Bo, and Chang Liu "Complementary multi-band bandpass filters for 3D projection display system", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126171Z (4 April 2023); https://doi.org/10.1117/12.2664635

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KEYWORDS

Optical filters

Transmittance

Design and modelling

3D displays

Refractive index

3D projection

Bandpass filters

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