
Calculation of the projection distance
For a screen size different from the above, use the equation below to calculate the projection distance.
• Distances calculated with the above equations will include a slight error.
minimum L (m) = (diagonal screen size in inches) × 0.027184 - 0.055400
maximum L (m) = (diagonal screen size in inches) × 0.036907 - 0.053400
minimum L (m) = (diagonal screen size in inches) × 0.035717 - 0.050400
maximum L (m) = (diagonal screen size in inches) × 0.060817 - 0.049700
minimum L (m) = (diagonal screen size in inches) × 0.060837 - 0.113900
maximum L (m) = (diagonal screen size in inches) × 0.099163 - 0.112800
minimum L (m) = (diagonal screen size in inches) × 0.099411 - 0.212700
maximum L (m) = (diagonal screen size in inches) × 0.157867 - 0.210700
(fixed focus) L (m) = (diagonal screen size in inches) × 0.017379 - 0.057231
ET-ELW20
Supplied lens
ET-ELT20
ET-ELT21
ET-ELW21
Aspect ratio 16:9
Aspect ratio 16:10
minimum L (m) = (diagonal screen size in inches) × 0.027940- 0.055400
maximum L (m) = (diagonal screen size in inches) × 0.037933- 0.053400
minimum L (m) = (diagonal screen size in inches) × 0.036709- 0.050400
maximum L (m) = (diagonal screen size in inches) × 0.062508- 0.049700
minimum L (m) = (diagonal screen size in inches) × 0.062528- 0.113900
maximum L (m) = (diagonal screen size in inches) × 0.101920- 0.112800
minimum L (m) = (diagonal screen size in inches) × 0.102175- 0.212700
maximum L (m) = (diagonal screen size in inches) × 0.162256- 0.210700
(fixed focus) L (m) = (diagonal screen size in inches) × 0.017862- 0.057231
ET-ELW20
Supplied lens
ET-ELT20
ET-ELT21
ET-ELW21
PT-EW730Z/EW730ZL
LCD Projectors
As of October 2013 9/17
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