Adjusting The Screen Size And Projection Distance - Hitachi CP-S318 User Manual

Adjusting the Screen Size and Projection Distance

Refer to the illustrations and tables below to determine the screen size and
projection distance.
The values shown in the table are calculated for a full size screen
(CP-S318: 800x600 pixels/CP-X328: 1024x768 pixels).
a:Distance from the projector to the screen (±10%)
b:Distance from the lens center to the bottom of the screen (±10%)
c:Distance from the lens center to the top of the screen (±10%)
The screen
Lens center
c
b
The screen
c
Lens center
b
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Top view
Side view
a
Top view
Side view
a
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If 4:3 aspect ratio
4
3
Screen Size [inch (m)]
30 (0.8)
40 (1.0)
50 (1.3)
60 (1.5)
70 (1.8)
80 (2.0)
90 (2.3)
100 (2.5)
120 (3.0)
150 (3.8)
200 (5.0)
250 (6.3)
300 (7.5)
If 16:9 aspect ratio
16
9
Screen Size [inch (m)]
30 (0.8)
40 (1.0)
50 (1.3)
60 (1.5)
70 (1.8)
80 (2.0)
90 (2.3)
100 (2.5)
120 (3.0)
150 (3.8)
200 (5.0)
250 (6.3)
300 (7.5)
a [inch (m)]
b
[inch (cm)]
Min. Max.
35 (0.9) 42 (1.1) 1 (2)
47 (1.2) 56 (1.4) 1 (3)
59 (1.5) 71 (1.8) 1 (4)
71 (1.8) 85 (2.2) 2 (4)
83 (2.1) 100 (2.5) 2 (5)
95 (2.4) 114 (2.9) 2 (6)
107 (2.7) 129 (3.3) 3 (7)
119 (3.0) 143 (3.6) 3 (7)
143 (3.6) 172 (4.4) 3 (9)
180 (4.6) 216 (5.5) 4 (11) 86 (218)
240 (6.1) 288 (7.3) 6 (15) 114 (290)
300 (7.6) 361 (9.2) 7 (18) 143 (363)
360 (9.2) 433 (11.0) 9 (22) 171 (435)
a [inch (m)]
b
[inch (cm)]
Min. Max.
38 (1.0) 46 (1.2) 2 (4)
51 (1.3) 61 (1.6) 2 (5)
64 (1.6) 77 (2.0) 3 (6)
77 (2.0) 93 (2.4) 3 (8)
90 (2.3) 109 (2.8) 4 (9)
104 (2.6) 125 (3.2) 4 (10) 43 (110)
117 (3.0) 140 (3.6) 5 (12) 49 (124)
130 (3.3) 156 (4.0) 5 (13) 54 (137)
156 (4.0) 188 (4.8) 6 (15) 65 (165)
196 (5.0) 235 (6.0) 8 (19) 81 (206)
261 (6.6) 314 (8.0) 10 (26) 108 (275)
327 (8.3) 393 (10.0) 13 (32) 135 (343)
393 (10.0) 472 (12.0) 15 (39) 162 (412)
c
[inch (cm)]
17 (44)
23 (58)
29 (73)
34 (87)
40 (102)
46 (116)
51 (131)
57 (145)
69 (174)
c
[inch (cm)]
16 (41)
22 (55)
27 (69)
32 (82)
38 (96)
7