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Positioning the Projector
67
To determine the projection distance when you know the diagonal size
of the screen image:
❐ Inches:
Maximum projection distance = (3.492 × diagonal size) - 5.091
Minimum projection distance = (2.053 × diagonal size) - 4.795
❐ Centimeters:
M
aximum projection distance = (8.8696
×
diagonal size) - 12.9311
M
inimum projection distance = (5.214
×
diagonal size) - 12.1793
Short Throw Zoom Lens Calculations (ELPLW01)
To determine the maximum and minimum diagonal size of an image
when you know the projection distance:
❐ Inches:
Maximum diagonal size = (0.876 × projection distance) + 3.793
Minimum diagonal size = (0.730 × projection distance) + 3.029
❐ Centimeters:
Maximum diagonal size = (2.2250 × projection distance) + 9.6342
Minimum diagonal size = (1.8542 × projection distance) + 7.6936
To determine the projection distance when you know the diagonal size
of the screen image:
❐ Inches:
Maximum projection distance = (1.369 × diagonal size) - 4.147
Minimum projection distance = (1.142 × diagonal size) - 4.331
❐ Centimeters:
M
aximum projection distance = (3.4772
×
diagonal size) - 10.5333
M
inimum projection distance = (2.9006
×
diagonal size) - 11.0007
80009000.book Page 67 Monday, November 1, 1999 9:35 AM