5. Lenses & lens holder
5.3 Lens formulas
Formulas
Lens
Throw ratio for 1,2" DC2K Zoom
Formulas
1,2" DC2K Zoom (1,25–1,45:1)
1,25- 1,45
PD
min
=1,25 x S W
PD
max
=1,45 x SW
1,2" DC2K Zoom (1,45–2,05:1)
1,45 - 2,05
PD
min
=1,45 x S W
PD
max
=2,05 x SW
1,2" DC2K Zoom (1,6–2,35:1)
1,6 - 2,35
PD
min
=1,60 x S W
PD
max
=2,35 x SW
1,2" DC2K Zoom (1,8–2,8:1)
1,8 - 2,8
PD
min
=1,8 x S W
PD
max
=2,8 x S W
1,2" DC2K Zoom (2,15–3,6:1)
2,15 - 3,6
PD
min
=2,15 x S W
PD
max
=3,6 x S W
1,2" DC2K Zoom (2,8–5,5:1)
2,8 - 5,5
PD
min
=2,8 x S W
PD
max
=5,5 x S W
PD
min
: M inimum distance between projector and sc reen. PD
max
: M axim um distance between projector and screen. SW:Screen
Width.
Due to production tolerances the real distances can differ by 2% from these calculated valu es.
For critical situations (fixed installs that use the lens at one of its extreme zoom positions) this should be
taken into account.
54 R59770491 DP2K-32B 30/04/2010
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