Barco OverView D Series, Руководство пользователя

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3. Design and functions
Barco - OverView D series - Doc-3353-2 - user's manual - Revision 04 - April 2005
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3-5
3.4 Principle of dual lamp system
The dual lamp system implemented in OverView D is based on a lamp lift which moves the respective lamp in
front of the stationary optics.
The lamps are moveable
The optics is stationary
The following identies apply:
Lamp Top == L1
Lamp Bottom == L2
The lift is the carrier of the lamps and can have two positions: lift up and lift down .
If the lift is in the down position,
the top lamp (Lamp1, L1 , Lamp Top ) is coupling light into the optical system ( P )
If the lift is in the up position,
the bottom lamp (Lamp2, L2 , Lamp Bottom ) is coupling light into the optical system ( P )
L1
L2
P
L1
L2
P
Liftposition
down
up
Figure 3-3
Lift positions
Since there are two lamps, the dual lamp system can have four states:
L1 on, L2 on ,
L1 on, L2 off,
L1 off, L2 on ,
L1 off, L2 off
L1
L2
L1
L2
L1
L2
L1
L2
Figure 3-4
Lamp states