Light Guide Block - Epson ELP-3500 Service Manual

EPSON ELP-3500 Service Manual

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.
PBS
Lens Adjustment Unit
CDM
Figure 2-18.
Multi-lens A
Multi-lens B
RGB Condenser Lens
RGB Polarization Unit
Figure 2-19.
2-17
GCM
Condenser Lens F
Condenser Lens E