Calculation formula, Pt-d7700 – Panasonic PT-D7700 User Manual
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PT-D7700
DLP™-Based Projector
S P E C
F I L E
As of April 2005
Calculation of the projection distance:
For a screen size, use the equation below to calculate the projection distance. (unit: mm)
ET-D75LE1
ET-D75LE2
ET-D75LE3
ET-D75LE4
ET-D75LE5
ET-D75LE8
4 : 3
minimum
L (mm) = (diagonal screen size in inches) x 30.7 - 76
maximum
L (mm) = (diagonal screen size in inches) x 41.0 - 100.4
4 : 3
minimum
L (mm) = (diagonal screen size in inches) x 41.2 - 79.5
maximum
L (mm) = (diagonal screen size in inches) x 61.7 - 106.4
4 : 3
minimum
L (mm) = (diagonal screen size in inches) x 61.7 - 95.8
maximum
L (mm) = (diagonal screen size in inches) x 103.1 - 121.6
4 : 3
minimum
L (mm) = (diagonal screen size in inches) x 103.1 - 115.8
maximum
L (mm) = (diagonal screen size in inches) x 163.9 - 101.3
4 : 3
(fixed focus)
L (mm) = (diagonal screen size in inches) x 15.8 - 83.5
4 : 3
minimum
L (mm) = (diagonal screen size in inches) x 164.0 - 386.2
maximum
L (mm) = (diagonal screen size in inches) x 307.2 - 359.8