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Apparatus and methods relating to wavelength conditioning of illumination

  • US 7,151,601 B2
  • Filed: 05/25/2004
  • Issued: 12/19/2006
  • Est. Priority Date: 02/02/2001
  • Status: Expired due to Term
First Claim
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1. A lighting system that provides a variable selected spectral output and a variable wavelength dependent intensity distribution, the lighting system comprising a light path that comprises:

  • a) a spectrum former configured to provide a spectrum from a light beam traveling along the light path, andb) a pixelated spatial light modulator located downstream from and optically connected to the spectrum former, the pixelated spatial light modulator configured to pass desired light from the spectrum to select a segment of light, wherein the pixelated spatial light modulator is operably connected to at least one controller containing computer-implemented programming that controls an on/off pattern of pixels in the pixelated spatial light modulator to provide a desired segment of light comprising the desired spectral and intensity distribution, the desired segment of light consisting essentially of a desired selected spectral output and a desired wavelength dependent intensity distribution,c) and wherein the pixelated spatial light modulator is a first pixelated spatial light modulator, and wherein the desired segment of light is directed to a second spatial light modulator operably connected to at least one controller containing computer-implemented programming that controls an on/off pattern of pixels in the second spatial light modulator to select the desired segment.

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