BenQ LH770, User Manual

Page: 19 / 76

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