Patent ID: 7618175

Claim:
A lighting system comprising: a housing having a bottom wall and a continuous side wall extending upwardly from said bottom wall, said continuous side wall defining a cavity and an open top, said continuous side wall further having a reflective inner surface; a top member positioned across said open top, said top member made of a light-transmitting material; a light source positioned in said cavity and emitting light; a helical fiber positioned in said cavity and biased between said light source and said top member, said helical fiber being light-transmitting and doped with a wavelength-converting material, wherein a portion of the light emitted by said light source passes through open space between turns of the helical fiber and a portion of the light emitted by said light source is received by the helical fiber, wherein a portion of the light received by the helical fiber is converted into a light of a predetermined color by the wavelength-converting material; and an adjustment means for adjusting compression of the helical fiber, thereby changing the relative portions of the light that passes through the open space between the turns of the helical fiber and the light that is received by the helical fiber, such that a light is emitted through the top member having a color that is a combination of a color of the light emitted by the light source and the predetermined color of the light converted by the wavelength-converting material.