Obtaining a preferred projected image size, Projection dimensions – BenQ TH683 User Manual
Page 17

Positioning your projector
17
Obtaining a preferred projected image size
The projected image size is determined by the distance from the projector lens to the
screen, the zoom setting, and the video format.
Projection dimensions
Refer to
for the center of lens dimensions of this projector
before calculating the appropriate position.
There is 5% tolerance among these numbers due to optical component variations. BenQ
recommends that if you intend to permanently install the projector, you should physically test
the projection size and distance using the actual projector before you permanently install it, so
as to make allowance for this projector's optical characteristics. This will help you determine
the exact mounting position so that it best suits your installation location.
Screen dimensions
Projection distance
Offset
(full height
definition)
Diagonal [inch
(mm)]
Height
[mm]
Width
[mm]
Min
distance
(with max
zoom)
Average
Max
distance
(with mim
zoom)
50
(1270)
623
1107
1273
1461
1649
93
60
(1524)
747
1328
1528
1753
1979
112
70
(1778)
872
1550
1782
2046
2309
131
80
(2032)
996
1771
2037
2338
2639
149
90
(2286)
1121
1992
2291
2630
2969
168
100
(2540)
1245
2214
2546
2922
3299
187
110
(2794)
1370
2435
2800
3214
3628
205
120
(3048)
1494
2657
3055
3507
3957
224
130
(3302)
1619
2878
3310
3799
4288
243
140
(3556)
1743
3099
3564
4091
4618
262
150
(3810)
1868
3321
3819
4383
4948
280
160
(4064)
1992
3542
4073
4676
5278
299
170
(4318)
2117
3763
4328
4968
5608
318
180
(4572)
2241
3985
4583
5260
5937
336
190
(4826)
2366
4206
4837
5552
6267
355
200
5080
2491
4428
5092
5844
6597
374
250
(6350)
3113
5535
6365
7306
8245
467
300
(7620)
3736
6641
7638
8767
9896
560
Floor Installation
Ceiling Installation