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5. Lenses & lens holder
5.2
Lens selection
How to select the right lens for your application ?
1. Determine the required screen width (SW).
2. Determine the position of the projector in the projection room with regard to the screen and measure the projector-screen distance
(PD).
3. Use the lens formulas (see "Lens formulas", page 48) to
fi
nd the best corresponding PD with regard to the measured projector-
screen distance for the required screen width SW.
Tip:
Divide PD by SW to determine the approximate throw ratio. Choose a lens, which captures the calculated throw ratio.
Use the lens formula of the chosen lens to recalculate exactly.
SCREEN
PD
SW
Image 5-7
R59770242 DP-1200 06/01/2009
47
Содержание DP-1200
Страница 1: ...DP 1200 Installation manual R59770242 02 06 01 2009 ...
Страница 12: ...1 Safety 8 R59770242 DP 1200 06 01 2009 ...
Страница 20: ...2 General 16 R59770242 DP 1200 06 01 2009 ...
Страница 29: ...3 Physical Installation 1 2 3 5 4 7 6 Image 3 11 R59770242 DP 1200 06 01 2009 25 ...
Страница 60: ...5 Lenses lens holder 56 R59770242 DP 1200 06 01 2009 ...
Страница 78: ...8 Starting up 74 R59770242 DP 1200 06 01 2009 ...
Страница 86: ...9 Projector registration Image 9 9 Add new owner 82 R59770242 DP 1200 06 01 2009 ...
Страница 104: ...10 Removal and installation of projector covers 100 R59770242 DP 1200 06 01 2009 ...
Страница 124: ...A Specifications A 3 Centre of gravity Centre of gravity 240 377 241 5 Image A 2 120 R59770242 DP 1200 06 01 2009 ...
Страница 128: ...A Specifications 124 R59770242 DP 1200 06 01 2009 ...
Страница 129: ...B Order Info B ORDER INFO Overview Spare part order info R59770242 DP 1200 06 01 2009 125 ...
Страница 132: ...Glossary 128 R59770242 DP 1200 06 01 2009 ...