Epson PowerLite 9000NL User Manual - Page 78

Fixed Short Throw Lens Calculations ELPLR01

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Fixed Short Throw Lens Calculations (ELPLR01) To determine the diagonal size of an image when you know the projection distance: Ë Inches: Diagonal size = (1.239 × projection distance) + 3.415 Ë Centimeters: Diagonal size = (3.1470 × projection distance) + 8.6741 To determine the projection distance when you know the diagonal size of the screen image: Ë Inches: Projection distance = (0.807 × diagonal size) - 2.756 Ë Centimeters: Projection distance = (2.0497 × diagonal size) - 7.0002 68 2 • Using the Projector

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2
•
Using the Projector
68
Fixed Short Throw Lens Calculations (ELPLR01)
To determine the diagonal size of an image when you know the
projection distance:
Inches:
Diagonal size = (1.239
×
projection distance) + 3.415
Centimeters:
Diagonal size = (3.1470
×
projection distance) + 8.6741
To determine the projection distance when you know the diagonal size
of the screen image:
Inches:
Projection distance = (0.807
×
diagonal size) - 2.756
Centimeters:
Projection distance = (2.0497
×
diagonal size) - 7.0002