Patent ID: 6567605
Filing Date: 2003-05-20
Classification: H01S,H04N

Abstract:
A fiber optic projection device comprising:red, blue and green fiber optic sources for emitting signals having red, green and blue colors, respectively, each fiber optic source comprising: at least one fiber amplifier for emitting an amplified signal of a predetermined wavelength; and a frequency altering device for altering the frequency of the amplified signal to thereby produce a signal having the respective color, wherein said red fiber optic source further comprises a red subharmonic oscillator for providing an input signal having a Raman seed wavelength to said at least one fiber amplifier which, in turn, provides Raman gain to the input signal having the Raman seed wavelength, and wherein the respective fiber amplifiers of said blue and green fiber optic sources emit amplified signals of the predetermined wavelength in a manner independent of Raman gain; at least one modulator for individually modulating the intensity of the signals having the red, green and blue colors; and a projector for mixing the modulated signals having the red, green and blue colors in order to create a color image.