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Relationship between Screen Size and Projection distance
Screen size at 4:3
Zoomed projection
aspect ratio
W x D (cm)
Max.
–
25"
51
x
38
–
30"
61
x
46
1.2 m
40"
81
x
61
(3.8')
1.4 m
50"
102
x
76
(4.8')
1.7 m
60"
122
x
91
(5.7')
2.0 m
70"
142
x
107
(6.7')
2.3 m
80"
163
x
122
(7.7')
2.6 m
90"
183
x
137
(8.7')
2.9 m
100"
203
x
152
(9.6')
3.2 m
110"
224
x
168
(10.6')
3.5 m
120"
244
x
183
(11.6')
3.8 m
130"
264
x
198
(12.6')
4.1 m
140"
284
x
213
(13.5')
4.4 m
150"
305
x
229
(14.5')
4.7 m
160"
325
x
244
(15.5')
5.0 m
170"
345
x
259
(16.5')
5.2 m
176"
358
x
268
(17.0')
5.3 m
180"
366
x
274
(17.4')
5.6 m
190"
386
x
290
(18.4')
5.9 m
200"
406
x
305
(19.4')
6.2 m
210"
427
x
320
(20.4')
6.5 m
220"
447
x
335
(21.3')
6.8 m
230"
467
x
351
(22.3')
7.1 m
240"
488
x
366
(23.3')
7.3 m
250"
508
x
381
(24.2')
7.6 m
260"
528
x
396
(25.2')
7.9 m
270"
549
x
411
(26.2')
8.2 m
280"
569
x
427
(27.2')
8.5 m
290"
589
x
442
(28.1')
8.8 m
300"
610
x
457
(29.1')
distance
H1
Min.
1.1 m
33 cm
(3.7')
(1.1')
1.3 m
39 cm
(4.4')
(1.3')
1.8 m
52 cm
(5.9')
(1.7')
2.3 m
65 cm
(7.5')
(2.2')
2.7 m
78 cm
(9.0')
(2.6')
3.2 m
92 cm
(10.5')
(3.0')
3.6 m
105 cm
(12.0')
(3.5')
4.1 m
118 cm
(13.5')
(3.9')
4.6 m
131 cm
(15.1')
(4.3')
5.0 m
144 cm
(16.6')
(4.7')
5.5 m
157 cm
(18.1')
(5.2')
5.9 m
170 cm
(19.6')
(5.6')
6.4 m
183 cm
(21.2')
(6.0')
6.9 m
196 cm
(22.7')
(6.5')
7.3 m
209 cm
(24.2')
(6.9')
7.8 m
222 cm
(25.7')
(7.3')
8.1 m
230 cm
(26.6')
(7.6')
8.3 m
235 cm
(27.2')
(7.8')
8.7 m
248 cm
(28.8')
(8.2')
–
262 cm
(8.6')
–
275 cm
(9.1')
–
288 cm
(9.5')
–
301 cm
(9.9')
–
314 cm
(10.4')
–
327 cm
(10.8')
–
340 cm
(11.2')
–
353 cm
(11.7')
–
366 cm
(12.1')
–
379 cm
(12.5')
–
392 cm
(12.9')
Screen size at 16:9
aspect ratio
H2
W x D (cm)
5 cm
23"
51
x
(0.2')
6 cm
28"
x
61
(0.2')
9 cm
37"
81
x
(0.3')
11 cm
46"
102
x
(0.4')
13 cm
55"
122
x
(0.4')
15 cm
64"
x
142
(0.5')
17 cm
73"
163
x
(0.6')
19 cm
83"
183
x
103
(0.6')
22 cm
92"
203
x
114
(0.7')
24 cm
101"
x
224
126
(0.8')
26 cm
110"
244
x
137
(0.9')
28 cm
119"
264
x
149
(0.9')
30 cm
129"
284
x
160
(1.0')
32 cm
138"
x
305
171
(1.1')
35 cm
147"
325
x
183
(1.1')
37 cm
156"
345
x
194
(1.2')
38 cm
162"
358
x
201
(1.3')
39 cm
165"
x
366
206
(1.3')
41 cm
174"
386
x
217
(1.4')
43 cm
184"
406
x
229
(1.4')
45 cm
193"
427
x
240
(1.5')
48 cm
202"
x
447
251
(1.6')
50 cm
211"
467
x
263
(1.6')
52 cm
220"
488
x
274
(1.7')
54 cm
229"
508
x
286
(1.8')
56 cm
239"
x
528
297
(1.9')
58 cm
248"
549
x
309
(1.9')
61 cm
257"
569
x
320
(2.0')
63 cm
266"
589
x
331
(2.1')
65 cm
275"
x
610
343
(2.1')
64
7. Appendix
29
34
46
57
69
80
91
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