Abstract: A projector incorporating a prism and a plurality of light valves for modulating light that passes though the prism, wherein the color splitting-converging prism includes a dichroic coating having multiple layers of high and low index of refraction and ΒΌ wavelength thickness at each desired angle of incidence for reducing dichroic shift and thereby minimizing light loss.
Abstract: A functional device comprising a semiconductor material, wherein the functional device contains a compound not substantially undergoing oxidation-reduction reaction but having at least one lone electron pair and in which adding the compound negatively changes a flat band potential of the semiconductor material with respect to a case not adding it.