A YCseparation-type projector: High dynamic range with double modulation

Abstract — An experimental projector that features double modulation to obtain high-resolution (4096 × 2160 pixels) and high-dynamic-range images has been developed. Although a conventional projec-tor contains three modulators for red, green, and blue and outputs light after combining the modulated light from these three sources, our projector has an additional modulator for luminance that modulates the combined RGB modulated light. It can display high-resolution color images by combining three low-resolution panels for chrominance modulation and one high-resolution panel for luminance modulation. In addition, the dynamic range is dramatically improved because the double-modulation scheme minimizes black levels in projected images. The projector demonstrates an extremely high dynamic range of 1.1 million to 1 and 10-bit tone reproduction