Sharp XV-110ZM Serviceanleitung Seite 17

1. Optical unit outline
Green Blue
reflector reflector Red LCD
(smail) {small)
Total reflector
Condenser lens
IR {infrared rays)
Cut filter
2. Basic adjustment of the optical
system
2-1, Optical axis alignment
R: light source > R reflector — Total R reflector
— projection lens
B: light source > B reflector — Total B reflector
— projection lens
G: light source > Total G reflector > G reflector
— projection lens
2-2. LCD parallelism
R: R-LCD unit — projection lens
B: B-LCD unit -B reflector — projection lens
G: G-LCD unit — Total G reflector — G reflector
— projection lens
In this adjustment, the LCD units should be
repositioned to be parallel with their respective
It is clear from the above layout that the two
reflectors of each colour should be adjusted in
angle to make optical axis alignment. The light
beams go parallel after passing through the
condenser lens, and the reflectors that are
mounted after the condenser lenses are all small-
sized for higher precision. The two reflectors for
G light beams are both installed after the
condenser lens, so these reflectors should be first
adjusted.
condenser lenses and at the same distance from
the projection lens. The distance from the
projection lens is important because it affects the
angle of view and the focus. Since the reflectors
have been already adjusted during the optical
axis alignment mentioned above, each of the
LCD units should be independently adjusted here.
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