Barco R9852090, Installation Manual, Page: 11 / 15

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
XLD(1.45 - 1.8:1) PD
min
=1.45 x SW
PD
max
=1.80 x SW
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.
2.2 Projector Distance determination
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.
R5976679 XLD(1.45 - 1.8:1) LENS 01042004 7