Evaluate The Distance Based On The Image Size; Obtaining A Preferred Projected Image Size; Projection Dimensions - BenQ LH770 User Manual

Evaluate the distance based on the image size

Obtaining a preferred projected image size

The distance from the projector lens to the screen, the zoom setting (if available), and the video format
each factors in the projected image size.

Projection dimensions

Refer to "Dimensions" on page 69
the appropriate position.
Max. zoom
H
W
LX770
The screen aspect ratio is 4:3 and the projected picture is 4:3
Screen size
Diagonal
H
(mm)
Inch mm
30 762 475
40 1016 610
50 1270 762
60 1524 914
80 2032 1219
100 2540 1524
120 3048 1829
140 3556 2134
160 4064 2438
180 4572 2743
200 5080 3048
220 5588 3353
250 6350 3810
300 7620 4572
for the center of lens dimensions of this projector before calculating
Min. zoom
Vertical offset A
Distance from screen (mm
Min distance
W
Average
(mm)
(max. zoom)
610 1084 1384
813 1463 1862
1016 1841 2340
1219 2220 2818
1626 2977 3774
2032 3734 4730
2438 4491 5686
2845 5248 6641
3251 6005 7597
3658 6762 8553
4064 7519 9509
4470 8276 10465
5080 9411 11899
6096 11304 14289
Screen
Center of lens
Projection distance
)
Offset (mm)
Max distance
(min. zoom)
1683 112
2261 149
2838 187
3416 224
4571 299
5725 373
6880 448
8035 523
9190 597
10345 672
11500 747
12655 821
14387 933
17274 1120
19