Epson RS-353, Service Manual

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Multi-lens A/B
Dispersion of the light from the light source lamp by the multi-lens roughly
uniform the brightness. The UV filter coated on the surface of the multi-lens array
eliminates ultraviolet rays.
PBS (Polarizing Beam Splinter)
The light dispersed through the multi-lens A/B is further dispersed through PBS for
the light intensity to be uniformed.
Lens adjustment unit
Adjust the distortion of the light applied through (l),(2).(4) CDM is a light filter
looks red in the visual light. The filter transmit only the red light and reflect
blue and green lights from the light source.
CDM
CDM is a light filter looks red
in the visual light.
The filter transmit only the
red light reflect blue and green lights from the light source.
GDM
GDM is a light filter looks blue in the visual light. The GDM filter transmit only the
blue light from the light source. Since the input light to the GDM is only blue and
green lights by the CDM as described above, green light is reflected by the GDM
and provided to the condenser lens G.
Condenser lens F/E
The condenser lens D/E collects the light dispersed by the GDM in order to protect
reduction and provide to the mirror at the next stage.
Condenser lens R/G/B
To collect the lights dispersed into R/G/B.
Polarization unit R/G/B
To control the color of dispersed lights into red/blue/green by the CDM and GDM.
Films in the colors shown below are placed on the each sheet of polarization unit.
NAME COLOR OF FILM
POLARIZATION
GREY
POLARIZATION G
POLARIZATION B
BLUE
RED
2-15