Panasonic PT-DS20KEJ User Manual
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PT-DS20K
3-Chip DLP
™
Projector
As of April 2013
SFD12M006-2
8 / 1 8
Calculation of the projection distance
For a screen size different from the above, use the equation below to calculate the projection distance.
Aspect ratio 4:3
minimum
L (m) = (diagonal screen size in inches) × 0.0207 – 0.0566
maximum
L (m) = (diagonal screen size in inches) × 0.0248 – 0.0736
minimum
L (m) = (diagonal screen size in inches) × 0.0290 – 0.0857
maximum
L (m) = (diagonal screen size in inches) × 0.0375 – 0.1085
minimum
L (m) = (diagonal screen size in inches) × 0.0371 – 0.0832
maximum
L (m) = (diagonal screen size in inches) × 0.0540 – 0.1162
minimum
L (m) = (diagonal screen size in inches) × 0.0536 – 0.1131
maximum
L (m) = (diagonal screen size in inches) × 0.1039 – 0.1765
minimum
L (m) = (diagonal screen size in inches) × 0.1026 – 0.1577
maximum
L (m) = (diagonal screen size in inches) × 0.1635 – 0.1615
minimum
L (m) = (diagonal screen size in inches) × 0.1640 – 0.3862
maximum
L (m) = (diagonal screen size in inches) × 0.3072 – 0.3598
L (m) = (diagonal screen size in inches) × 0.0158 – 0.0713
Zoom lenses
ET-D75LE6
ET-D75LE10
ET-D75LE20
ET-D75LE30
ET-D75LE40
ET-D75LE8
Fixed-focus lens
ET-D75LE50
•
Distances calculated with the above equations will include slight deviations.