BenQ W20000 - Manual (Page 15)

15 Positioning your projector
Eng
lish 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.
4:3 (standard) ratio screen dimension table
* See the pictures of "Shifting the projection lens vertically" on page 12 for the range of (C) and (D)
The above numbers are approximate and may be slightly different from the actual measurements. Only the
recommended screen sizes are listed. If the your screen size is not in the table above, please contact your
BenQ dealer for assistance.
Projection Distance
Floor
Screen
Image Height
Center of the lens
Diagonal
Floor Installation
Screen
Image Height Projection Distance
Ceiling
Center of the lens
Diagonal
Ceiling Installation
Screen Dimensions Projection Distance in cm Offset
Diagonal
(inch)
Height
(cm) Width
(cm)
Min
distance
(with
max
zoom)
Average
Max
distance
(with min
zoom)
Highest
lens
position
(cm)
(C)*
Lowest
lens
position
(cm)(D)*
Image
Height
(cm)
41 62 83 154 169 184 5 -42 47
50 76 102 187 206 225 6 -51 57
60 91 122 225 248 270 7 -62 69
70 107 142 262 289 315 8 -72 80
80 122 163 300 330 360 9 -82 91
90 137 183 337 371 405 10 -93 103
100 152 203 375 413 450 11 -103 114
110 168 224 412 454 495 13 -113 126
120 183 244 450 495 539 14 -123 137
130 198 264 487 536 584 15 -134 149
140 213 284 525 577 629 16 -144 160
150 229 305 562 618 674 17 -154 171
160 244 325 599 659 719 18 -165 183
170 259 345 637 701 764 19 -175 194
180 274 366 674 742 809 21 -185 206
190 290 386 712 783 854 22 -195 217
200 305 406 749 824 899 23 -206 229
250 381 508 937 1031 1124 29 -257 286
300 457 610 1124 1237 1349 34 -309 343
W20000-en.book Page 15 Monday, October 22, 2007 3:35 PM