5. Lenses & lens holder
5.2
Lens selection
How to select the right Lens
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.
Note:
To be precise, PD is the perpendicular distance between the front plate of the Lens Holder and the screen.
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 5-6
Projector distance
R59770495 DP2K-23B 30/04/2010
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Summary of Contents for DP2K-23B
Page 1: ...DP2K 23B Installation manual R59770495 00 30 04 2010...
Page 6: ......
Page 37: ...4 Lamp lamp house Image 4 5 Remove lamp house R59770495 DP2K 23B 30 04 2010 31...
Page 47: ...4 Lamp lamp house 4 Reinstall the lamp cover of the projector R59770495 DP2K 23B 30 04 2010 41...
Page 78: ...7 Communicator Touch Panel 72 R59770495 DP2K 23B 30 04 2010...
Page 82: ...8 Starting up 76 R59770495 DP2K 23B 30 04 2010...
Page 90: ...9 Projector registration Image 9 9 Add new owner 84 R59770495 DP2K 23B 30 04 2010...
Page 110: ...10 Removal and installation of the projector covers 104 R59770495 DP2K 23B 30 04 2010...