Service manual

EPSON ELP-3500 Service Manual
2-17
2.9 LIGHT GUIDE BLOCK
The light valve block eliminates ultraviolet rays harmful to the light valves and makes the
light intensity from the light source lamp uniform before dividing it into 3 light outputs
(R/G/B). Lenses and mirrors built in the block disperse the light. The drawings below
show the appearance and an internal block diagram of the light valve block.
Figure 2-18.
CDM
Lens Adjustment Unit
PBS
Multi-lens B
Multi-lens A
GCM
Condenser Lens F
Condenser Lens E
RGB Condenser Lens
RGB Polarization Unit
Figure 2-19.