5
Projection distances
When planning the projector and screen geometry, refer to the following figures and table on the next page for
reference. After the projector is roughly positioned, picture size and vertical picture positioning can be finely
adjusted with the powered zoom lens and lens shifting mechanism.
L
B
L1
L
Side View
Screen
Screen
Conter of screen
Top View
[Units : mm(")]
Projection lens
number
L1 size (Approx.)
ET-D75LE1
114.4 (4-1/2")
ET-D75LE2
98.9 (3-29/32")
ET-D75LE3
102.4 (4-1/32")
ET-D75LE4
126.3 (4-31/32")
ET-D75LE5
202.4 (7-31/32")
ET-D75LE6
211.9 (8-11/32")
ET-D75LE8
254.4 (10-1/32")
ET-D75LE10
125 (4-29/32")
ET-D75LE20
121 (4-3/4")
ET-D75LE30
121 (4-3/4")
ET-D75LE40
124 (4-7/8")
ET-D75LE50
203 (8")
L: Projection distance
B: Distance from center of upper and lower lens to lower frame is approximately 310 mm (12-7/32").
Attention
z
Install the projector with a space more than 500 mm (19-11/16") behind it so as not to interfere with projector
ventilation.
z
Leave a space of 500 mm (19-11/16") on each side of the projector.
■
Projection distances by the type of projection lens (optional)
Every type of optional projection lens has a different projection distance to achieve the same screen size.
Select and purchase a projection lens most suitable to the size of your location and your screen size by referring
to the figure below and the following tables of the projection distances by the type of projection lens from the next
page.
L
Screen