BenQ MH680 User Manual page 15

Installation for a 4:3 ratio screen
The illustrations and table below are provided for those users who already have 4:3 aspect
ratio screens or intend to purchase 4:3 aspect ratio screens to view 16:9 ratio projected
images.
Floor Installation
<B>
<A>
<H>
<C>
<E>
<F>: Screen <G>: Center of lens
The screen aspect ratio is 4:3 and the projected picture is in a 16:9 aspect ratio
Screen dimensions
Diagonal Height
<A> <B>
[inch (mm)] [mm]
40 (1016) 610
50 (1270) 762
60 (1524) 914
70 (1778) 1067
80 (2032) 1219
90 (2286) 1372
100 (2540) 1524
110 (2794) 1676
120 (3048) 1829
130 (3302) 1981
140 (3556) 2134
150 (3810) 2286
160 (4064) 2438
170 (4318) 2591
180 (4572) 2743
190 (4826) 2896
200 (5080) 3048
All measurements are approximate and may vary from the actual sizes.
BenQ recommends that if you intend to permanently install the projector, you should physically test the
projection size and distance using the actual projector in situ 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.
<F>
<G>
<D>
Projection distance <D>
Min
Width distance
<C> (with
[mm] max
zoom)
813 929
1016 1162
1219 1394
1422 1627
1626 1859
1829 2091
2032 2324
2235 2556
2438 2788
2642 3021
2845 3253
3048 3486
3251 3718
3454 3950
3658 4183
3861 4415
4064 4647
Ceiling Installation
<A>
<H>
<E>
<B>
<C>
<F>: Screen
[mm]
Max
distance
Average (with
min
zoom)
1069 1208
1336 1510
1603 1813
1871 2115
2138 2417
2405 2719
2672 3021
2940 3323
3207 3625
3474 3927
3741 4229
4008 4531
4276 4833
4543 5135
4810 5438
5077 5740
5345 6042
Positioning your projector
<D>
<G>
<F>
<G>: Center of lens
Lowest/
Highest Image
lens height
position <H>
<E> [mm]
[mm]
23
29
34
40
46
51 1029
57 1143
63 1257
69 1372
74 1486
80 1600
86 1715
91 1829
97 1943
103 2057
109 2172
114 2286
457
572
686
800
914
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