Patent ID: 9039199
Filing Date: 2015-05-26
Classification: G03B,G09G,H04N

Abstract:
1. A projector, comprising: a light modulation part modulating light generated by a light source part; a video signal processing part processing a video signal to be input; and a projection optical system projecting the light modulated by said light modulation part onto an external projection target to obtain a projected video image, wherein said video signal processing part includes a blue light effect alleviating part alleviating effects of blue light on retinas, and in a case where among a red signal, a green signal, and a blue signal included in the video signal, only a ratio of said blue signal is high, said blue light effect alleviating part generates a blue light effect alleviating signal for controlling said light source part to reduce the brightness of said projected video image as a whole, wherein said blue light effect alleviating part includes: said light source part includes: said blue light effect alleviating signal is provided to said first to third light source control drivers, and said first to third light source control drivers output said first to third drive currents, respectively, at a duty ratio corresponding to said first or second coefficient based on said blue light effect alleviating signal.