| 摘要 |
<p>PCT No. PCT/GB93/00690 Sec. 371 Date Oct. 26, 1994 Sec. 102(e) Date Oct. 26, 1994 PCT Filed Apr. 1, 1993 PCT Pub. No. WO93/20656 PCT Pub. Date Oct. 14, 1993A spatial light modulator system includes a multi-wavelength light source and three spatial light modulators, two dichroic mirrors are arranged in the light path between the light source and the spatial light modulators so as to direct light within a different wavelength band onto all but one of the spatial light modulators, light to the third spatial light modulator passing through the dichroic mirror onto the third spatial light modulator. Spatially modulated light reflected from the spatial light modulators is combined by the two dichroic mirrors to produce a multi-wavelength spatially modulated output beam. In order to equalize the number of reflections uundergone by spatially modulated light from all the spatial light modulators a reflector is provided in the optical path between the third spatial light modulator and the output beam.</p> |
