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3. Installation Guidelines
3.4 Lenses
Overview
• Lenses
• Lens formulas
• Lens installation
• Removing the lens
• Cleaning the lens
3.4.1 Lenses
Available lenses
The following lenses are available, or will become available (contact a BARCO service center) as an option :
Lenses
Standard version
QVD(0.85:1)
R9841220
QVD(1.3-1.8:1)
R9840950
QVD(1.9-2.6:1)
R9840960
QVD(3.0-6.0:1)
R9840970
QVD(7:1)
R9841230
SVD(2.0-2.5:1)
R9841240
The QVD (0.85:1) is to be used in ON Axis configuration only.
Shifting the lens vertically will not guarantee optimal image quality.
3.4.2 Lens formulas
Formulas
Metric Formulas (meter) Inch formulas (inch)
QVD(0.85:1) PD = -0.034 + 0.801 x SW + 0.0086 /SW PD = -1.34 + 0.801 x SW + 13.35 /SW
QVD(1.3-1.8:1) PDmin = 0.019 + 1.216xSW + 0.028/SW
PDmax = -0.001 + 1.584xSW + 0.074/SW
PDmin = 0.75 + 1.216xSW + 43.4/SW
PDmax = -0.04 + 1.584xSW + 115/SW
QVD(1.9-2.6:1) PDmin = 0.052 + 1.731xSW - 0.014/SW
PDmax = 0.11 + 2.33xSW - 0.059/SW
PDmin = 2.05 + 1.731xSW - 21.7/SW
PDmax = 4.33 + 2.33xSW - 91.8/SW
QVD(3.0-6.0:1) PDmin = 0.048 + 2.795xSW - 0.042/SW
PDmax = 0.06 + 5.6xSW - 0.041/SW
PDmin = 1.89 + 2.795xSW - 65/SW
PDmax = 2.36 + 5.6xSW - 63.4/SW
QVD(7:1) PD = 0.013 + 6.35xSW + 0.005/SW PD = 0.51 + 6.35xSW + 8.35/SW
SVD(2.0-2.5:1) PDmin = -0.139 + 1.733xSW + 0.1/SW
PDmax = 0.005 + 2.224xSW - 0.00862/SW
PDmin = -5.47 + 1.733xSW + 153/SW
PDmax = 0.2 + 2.224xSW - 13.3/SW
Lens program to calculate the projector distance is available on the BARCO web site :
h
ttp://www.barco.com/projection_systems/customer_services/lens_program.asp
16 R5976741 MGP 15 MEDICAL GRADE PROJECTOR 28/04/2004