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85
APPENDIX
Relationship between Screen Size
and Projection Distance
Zoomed projection distance
Screen size at 4:3
aspect ratio
W x D (cm)
Max. Min.
H1 H2
Screen size at 16:9
aspect ratio
W x D (cm)
40
″
81 x 61
2.0 m
(6.6
′
)
1.2 m
(3.9
′
)
55 cm
(1.8
′
)
6 cm
(0.2
′
)
37
″
81 x 46
2.5 m
(8.2
′
)
1.5 m
(4.9
′
)
69 cm
(2.3
′
)
8 cm
(0.26
′
)
46
″
102 x 57
60
″
122 x 91
3.0 m
(9.8
′
)
1.8 m
(5.9
′
)
82 cm
(2.7
′
)
9 cm
(0.3
′
)
55
″
122 x 69
3.5 m
(11.5
′
)
2.1 m
(6.9
′
)
96 cm
(3.1
′
)
11 cm
(0.36
′
)
64
″
142 x 80
4.0 m
(13.1
′
)
2.4 m
(7.9
′
)
110 cm
(3.6
′
)
12 cm
(0.4
′
)
74
″
163 x 91
4.5 m
(14.8
′
)
2.7 m
(8.9
′
)
123 cm
(4.0
′
)
14 cm
(0.46′)
83
″
183 x 103
5.0 m
(16.4
′
)
3.0 m
(9.8
′
)
137 cm
(4.5
′
)
15 cm
(0.49
′
)
91
″
203 x 114
5.5 m
(18.0
′
)
3.3 m
(10.8
′
)
151 cm
(5.0
′
)
17 cm
(0.56
′
)
101
″
224 x 126
6.0 m
(19.7
′
)
3.6 m
(11.8
′
)
165 cm
(5.4
′
)
18 cm
(0.59
′
)
110
″
244 x 137
6.5 m
(21.3
′
)
3.9 m
(12.8
′
)
178 cm
(5.8
′
)
20 cm
(0.66
′
)
119
″
264 x 149
7.0 m
(23.0
′
)
4.2 m
(13.8
′
)
192 cm
(6.3
′
)
21 cm
(0.69
′
)
128
″
284 x 160
7.5 m
(24.6
′
)
4.5 m
(14.8
′
)
206 cm
(6.8
′
)
23 cm
(0.75
′
)
138
″
305 x 171
8.0 m
(26.2
′
)
4.8 m
(15.7
′
)
219 cm
(7.2
′
)
24 cm
(0.79
′
)
147
″
325 x 183
8.5 m
(27.9
′
)
5.1 m
(16.7
′
)
233 cm
(7.6
′
)
26 cm
(0.85
′
)
156
″
345 x 194
8.8 m
(28.9
′
)
5.3 m
(17.4
′
)
241 cm
(7.9
′
)
27 cm
(0.86
′
)
162
″
358 x 201
9.0 m
(29.5
′
)
5.4 m
(17.7
′
)
247 cm
(8.1
′
)
27 cm
(0.86
′
)
165
″
366 x 206
9.1 m
(29.9
′
)
5.5 m
(18.0
′
)
250 cm
(8.2
′
)
28 cm
(0.9
′
)
167
″
370 x 208
-
5.7 m
(18.7
′
)
261 cm
(8.6
′
)
29 cm
(
0.95
′
)
174
″
386 x 217
-
6.0 m
(19.7
′
)
274 cm
(9.0
′
)
30 cm
(
0.98
′
)
184
″
406 x 229
-
6.3 m
(20.7
′
)
288 cm
(9.4
′
)
32 cm
(
1.05
′
)
193
″
427 x 240
-
6.6 m
(21.7
′
)
302 cm
(9.9
′
)
34 cm
(
1.12
′
)
202
″
447 x 251
-
7.0 m
(23.0
′
)
315 cm
(10.3
′
)
35 cm
(
1.15
′
)
211
″
467 x 263
-
7.3 m
(24.0
′
)
329 cm
(10.8
′
)
37 cm
(
1.21
′
)
220
″
488 x 274
-
7.6 m
(24.9
′
)
343 cm
(11.3
′
)
38 cm
(
1.25
′
)
233
″
508 x 286
-
7.9 m
(25.9
′
)
357 cm
(11.7
′
)
40 cm
(
1.31
′
)
239
″
528 x 297
-
8.2 m
(26.9
′
)
370 cm
(12.1
′
)
41 cm
(
1.35
′
)
248
″
549 x 309
-
8.5 m
(27.9
′
)
384 cm
(12.6
′
)
43 cm
(
1.41
′
)
257
″
569 x 320
-
8.8 m
(28.9
′
)
398 cm
(13.1
′
)
44 cm
(
1.44
′
)
266
″
589 x 331
-
9.1 m
(29.9
′
)
411 cm
(13.5
′
)
46 cm
(
1.51
′
)
276
″
610 x 343
50
″
102 x 76
70
″
142 x 107
80
″
163 x 122
90
″
183 x 137
100
″
203 x 152
110
″
224 x 168
120
″
244 x 183
130
″
264 x 198
140
″
284 x 213
150
″
305 x 229
160
″
325 x 244
170
″
345 x 259
176
″
358 x 268
180
″
366 x 274
182
″
370 x 277
190
″
386 x 290
200
″
406 x 305
210
″
427 x 320
220
″
447 x 335
230
″
467 x 351
240
″
488 x 366
250
″
508 x 381
260
″
528 x 396
270
″
549 x 411
280
″
569 x 427
290
″
589 x 442
300
″
610 x 457
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