Patent ID: 9664989
Date: 2017-05-30
CPC Classifications: G03B,H04N

Claim:
1. A method for projecting images, the method comprising: generating blue light from at least one blue laser light source; generating at least red light from first phosphor excited by at least some of the blue light; generating at least green light from second phosphor excited by at least some of the blue light; introducing the red light to a first spatial light modulator via a first TIR or RTIR element; introducing the green light to a second spatial light modulator via a second TIR or RTIR element; introducing at least some of the blue light to at least one of: the first spatial light modulator via the first TIR or RTIR element; and the second spatial light modulator via the second TIR or RTIR element; modulating the introduced red light by the first spatial light modulator; modulating the introduced green light by the second spatial light modulator; to an extent the blue light is so introduced to the first spatial light modulator, modulating the introduced blue light by the first spatial light modulator, time-sequentially apart from the first spatial light modulator's modulation of the introduced red light; to an extent the blue light is so introduced to the second spatial light modulator, modulating the introduced blue light by the second spatial light modulator, time-sequentially apart from the second spatial light modulator's modulation of the introduced green light; passing the modulated red light into a two-prism cube via the first TIR or RTIR element; passing the modulated green light into the two-prism cube via the second TIR or RTIR element; to an extent the blue light is so modulated by the first spatial light modulator, passing the modulated blue light into the two-prism cube via the first TIR or RTIR element, time-sequentially apart from the first TIR or RTIR element's passing of the modulated red light; to an extent the blue light is so modulated by the second spatial light modulator, passing the modulated blue light into the two-prism cube via the second TIR or RTIR element, time-sequentially apart from the second TIR or RTIR element's passing of the modulated green light; and with the two-prism cube, combining the modulated red, green and blue light into a combined modulated RGB light stream.