28 November 2011 A new type of stereoscopic 3D mini-projector
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Mini-projectors based on LED illumination have already become a hotspot of projector industry, and time-sequential stereoscopic mini-projector has been developed. However, viewers to this type of 3D projector usually suffered from dark and flickering images caused by false synchronization of images and glasses, and the low transmittance of LC glasses. We propose a new type of polarized mini-3D-projector, which employs double LED illumination engines, and double LCoS panels. The optical model of the optical engine for the mini-3D-projector is built based on the measured optical qualities of the key optical elements. The large divergence angle is the main factor which affects disparity according to the simulated analysis. The first version of prototype is developed, which has low disparity (<5%) and performs comfortable viewing experience. This new type of 3D mini-projector has the advantages of the both conventional 3D projection technologies.
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Ping Su, Ping Su, Jianshe Ma, Jianshe Ma, Yan Li, Yan Li, Dingru Chen, Dingru Chen, Yi Li, Yi Li, } "A new type of stereoscopic 3D mini-projector", Proc. SPIE 8202, 2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology, 820203 (28 November 2011); doi: 10.1117/12.907074; https://doi.org/10.1117/12.907074

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