Lighting systems comprising a spectrum former upstream from a reflective
pixelated spatial light modulator (reflective SLM), the SLM reflecting
substantially all of the light in the spectrum into at least two
different light paths, that do not reflect back to the light source or
the spectrum former. At least one of the light paths acts as a projection
light path and transmits desired light out of the lighting system. The
lighting systems provide virtually any desired color(s) and intensity(s)
of light, and avoid overheating problems by deflecting unwanted light and
other electromagnetic radiation out of the system or to a heat management
system. The systems can be part of another system, a luminaire, or any
other suitable light source. The systems can provide virtually any
desired light, from the light seen at the break of morning to specialized
light for treating cancer or psoriasis, and may change color and
intensity at speeds that are perceptually instantaneous.