Patent ID: 8711290
Filing Date: 2014-04-29
Classification: G03B,H04N

Abstract:
1. A projection-type video image display apparatus, comprising: an excitation light source which emits excitation light; and a phosphor, said phosphor including a plurality of fluorescent portions which emit light of a plurality of colors as they are excited by excitation light from said excitation light source, respectively; a phosphor drive portion which drives said phosphor such that said plurality of fluorescent portions emit light within 1 frame period; a video signal analysis portion which analyzes a video signal for each piece of image data in each frame; and an excitation light source drive portion which sets an intensity of the excitation light emitted to each of said plurality of fluorescent portions in accordance with a result of analysis by said video signal analysis portion, wherein said plurality of fluorescent portions include said excitation light source drive portion sets a first intensity of excitation light emitted to said first fluorescent portion and a second intensity of excitation light emitted to said second fluorescent portion in accordance with the result of analysis by said video signal analysis portion.