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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
Projector distance
R59770351 DP2K-20C 02/02/2010
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Содержание DP2K--20C
Страница 1: ...DP2K 20C Installation manual R59770351 02 02 02 2010...
Страница 5: ...Projector Pb Hg Cd Cr6 PBB PBDE x o o o o o RoHS...
Страница 6: ......
Страница 29: ...3 Physical installation 1 2 3 5 4 7 6 Image 3 11 R59770351 DP2K 20C 02 02 2010 23...
Страница 82: ...8 Starting up 76 R59770351 DP2K 20C 02 02 2010...
Страница 90: ...9 Projector registration Image 9 9 Add new owner 84 R59770351 DP2K 20C 02 02 2010...
Страница 100: ...10 Removal and installation of projector covers Image 10 12 Top cover removal 94 R59770351 DP2K 20C 02 02 2010...
Страница 108: ...10 Removal and installation of projector covers 102 R59770351 DP2K 20C 02 02 2010...
Страница 120: ...11 Maintenance 114 R59770351 DP2K 20C 02 02 2010...
Страница 134: ...A Specifications 128 R59770351 DP2K 20C 02 02 2010...