5. Lenses & lens holder
5.3
Lens formulas
Formulas
Lens
Throw ratio for 0.98" DC2K Zoom
Formulas (metric and inches)
0.98” DC2K Zoom (1.2–1.81:1)
1.2 - 1.81
PD
min
=1.2 x SW
PD
max
=1.81 x SW
0.98” DC2K Zoom (1.4–2.05:1)
1.4 - 2.05
PD
min
=1.4 x SW
PD
max
=2.05 x SW
0.98” DC2K Zoom (1.6–2.5:1)
1.6 - 2.5
PD
min
=1.60 x SW
PD
max
=2.50 x SW
0.98” DC2K Zoom (1.95–3.2:1)
1.95 - 3.2
PD
min
=1.95 x SW
PD
max
=3.2 x SW
0.98” DC2K Zoom (2.4–3.9:1)
2.4 - 3.9
PD
min
=2.4 x SW
PD
max
=3.9 x SW
Due to production tolerances the real distances can differ by 2% from these calculated values.
For critical situations (
fi
xed installs that use the lens at one of its extreme zoom positions) this should be
taken into account.
C
AUTION
:
Never transport the projector with a lens mounted in the lens holder. Always remove the lens
before transporting the projector. Neglecting this can damage the lens holder and prism.
48
R59770242 DP-1200 06/01/2009
Summary of Contents for DP-1200
Page 1: ...DP 1200 Installation manual R59770242 02 06 01 2009 ...
Page 12: ...1 Safety 8 R59770242 DP 1200 06 01 2009 ...
Page 20: ...2 General 16 R59770242 DP 1200 06 01 2009 ...
Page 29: ...3 Physical Installation 1 2 3 5 4 7 6 Image 3 11 R59770242 DP 1200 06 01 2009 25 ...
Page 60: ...5 Lenses lens holder 56 R59770242 DP 1200 06 01 2009 ...
Page 78: ...8 Starting up 74 R59770242 DP 1200 06 01 2009 ...
Page 86: ...9 Projector registration Image 9 9 Add new owner 82 R59770242 DP 1200 06 01 2009 ...
Page 104: ...10 Removal and installation of projector covers 100 R59770242 DP 1200 06 01 2009 ...
Page 128: ...A Specifications 124 R59770242 DP 1200 06 01 2009 ...
Page 129: ...B Order Info B ORDER INFO Overview Spare part order info R59770242 DP 1200 06 01 2009 125 ...