Epson Elp-3500, Service Manual, Page: 32 / 114

EPSON ELP-3500 Service Manual
2-3
2.1.2 OPTICAL SYSTEM CONNECTIONS
The optical system consists of 4 blocks (lamp inner/outer housing, light guide unit, optical
head, and projector lens), as shown below.
Lamp Inner/Outer
Housing
Light Guide Unit
Optical Head
Projector Lens
Figure 2-3.
Figure 2-4. Optical Head Assembly
Table 2-2.
UNIT NAME FUNCTIONS AND REMARKS
LAMP INNER/OUTER HOUSING Includes one metal halide lamp as a light source. Lamp
inner housing and lamp outer housing are mounted.
LIGHT GUIDE UNIT Disperses light from the light source uniformly using the
A/B lens array.
Disperses the light in three parts (R/G/B).
PROJECTOR LENS Zoom (*1.4) and focus adjustments