Eiki EIP-3500, Service Manual, Page: 24 / 84

24
EIP-3500
THE OPTICAL UNIT OUTLINE
Layout for proper setup of the optical components and parts (top view)
(Schematic diagram)
Item Function
Lamp Light source. DC high-pressure mercury lamp.
Color wheel Splits light from the light source into R, G, B and W through a color filter.
Rod Assures uniform light ray.
Illumination lenses Focus light from the rod on DMD.
Reflection mirror Reflects light from the illumination lenses toward DMD.
Field lens Focuses light from the reflection mirror on DMD and then the light from DMD to
the projection lens.
DMD Turns the internal micromirror ON/OFF at the rate of color component of each dot
of the input source to reflect light.
Projection lens Enlarges light from DMD and projects it on a screen.
DMD
Field lens
Lamp
Reflection mirror
Color wheel
Illumination lenses 1
Projection lens
Rod
UV Filter
Illumination lenses 2