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5. Lenses & lens holder
5.3 Lens formulas
Formulas
Lens
Throw ratio for 0.98" DC2K Zoom Formulas (metric and inches)
0.98” D C2K Zoom (1.2–1.81:1)
1.2 - 1.81
PD
min
=1.2 x S W
PD
max
=1.81 x SW
0.98” D C2K Zoom (1.4–2.05:1)
1.4 - 2.05
PD
min
=1.4 x S W
PD
max
=2.05 x SW
0.98” DC2K Zoom (1.6–2.5:1)
1.6 - 2.5
PD
min
=1.60 x S W
PD
max
=2.50 x SW
0.98” D C2K Zoom (1.95–3.2:1)
1.95 - 3.2
PD
min
=1.95 x S W
PD
max
=3.2 x S W
0.98” DC2K Zoom (2.4–3.9:1)
2.4 - 3.9
PD
min
=2.4 x S W
PD
max
=3.9 x S W
Due to production tolerances the real distances can differ by 2% from these calculated values.
For critical situations (fixed installs that use the lens at one of its extreme zoom positions) this should be
taken into account.
CAUTION: 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.
36 R59770091 DP-1500 06/01/2009