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2. Lens Specifications
2. LENS SPECIFICATIONS
2.1 Lens Formula
Calculation of the Projector distance (PD) as function of the Screen Width (SW)
Lens
Formula (Metric) Formula (Inches)
XLD (5.5 - 8.5 :1) PD
min
=5.57 x SW + 0.3m
PD
max
=8.60 x SW + 0.2m
PD
min
=5.57 x SW + 12 Inches
PD
max
=8.60 x SW + 8 Inches
Due to production tolerances the r
eal 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.
2.2 Projector Distance determi
nation
Reference for measuring
the PD
PD
SW
Image 2-1
PD measuring
The projection distance is the distance between front projector and screen surface, measured perpendicular onto the screen.
R5976810 XLD (5.5 - 8.5:1) ZOOM LENS 03/09/2004
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