8. Light processor assembly
blue light beams. T he prism merges the three integrated light beams back in to on e full color video im age, which is projected via
the lens onto the screen.
Each DMD has its ow n formatting board which drives the m icro mirrors to integrate the video signal into the light beam. A lot of heat
is produced during the integration of the video information. To protect the DMD’s for overheating the Light Processor is equipped
with fans and heat sinks. E ach channel has its ow n fan and he at sink.
The red and green c hannel are equipped with three extended adjustment knobs to convergence the DMD with the DM D of the blue
channel which is the reference channel for convergence alignment.
The air gab between the prism and D MD is sealed to protect the DMD’s for d ust. It is important to know that a misaligned light path
which reflects upon the sealing w ill damage the sealing very rapidly. At the bottom of the pr ism exit a “
touch” sensor is m ounted
to protect the prism against accidental lens movements. Note that the Light Processor Unit is equipped with a motorized shutter
(dowser) in front of the prism exit.
6
2
1
3
5
4
Image 8-3
Light processor
1 Formatting board blue channel
2 Formatting board green channel
3 Convergence adjustment knob
4 Cooling block green channel
5 Cooling block red channel
6Prismexit
R5905043 DP2K-12C/11CX 19/02/2018 137
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