Adjusting The Screen Size And Projection Distance - ViewSonic PJ650 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 (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%).
If 4:3 aspect ratio.
a
Screen Size
Inches (m)
Inches (m)
Minimum Maximum
30 (0.8) 35 (0.9)
40 (1.0) 47 (1.2)
50 (1.3) 59 (1.5)
60 (1.5) 71 (1.8)
70 (1.8) 83 (2.1)
80 (2.0) 95 (2.4)
90 (2.3) 107 (2.7)
100 (2.5) 119 (3.0)
120 (3.0) 143 (3.6)
150 (3.8) 180 (4.6)
200 (5.0) 240 (6.1)
250 (6.3) 300 (7.6)
300 (7.5) 360 (9.2)
If 16:9 aspect ratio.
a
Screen Size
Inches (m)
Inches (m)
Minimum Maximum
30 (0.8) 38 (1.0)
40 (1.0) 51 (1.3)
50 (1.3) 64 (1.6)
60 (1.5) 77 (2.0)
70 (1.8) 90 (2.3)
80 (2.0) 104 (2.6)
90 (2.3) 117 (3.0)
100 (2.5) 130 (3.3)
120 (3.0) 156 (4.0)
150 (3.8) 196 (5.0)
200 (5.0) 261 (6.6)
250 (6.3) 327 (8.3)
300 (7.5) 393 (10.0)
7 ViewSonic PJ650
b
Inches
(cm)
42 (1.1) 1 (2)
56 (1.4) 1 (3)
71 (1.8) 1 (4)
85 (2.2) 2 (4)
100 (2.5) 2 (5)
114 (2.9) 2 (6)
129 (3.3) 3(7)
143 (3.6) 3(7)
172 (4.4) 3(9)
216 (5.5) 4 (11)
288 (7.3) 6 (15)
361 (9.2) 7 (18)
433 (11.0) 9 (22)
b
Inches
(cm)
46 (1.2) 2 (4)
61 (1.6) 2 (5)
77 (2.0) 3 (6)
93 (2.4) 3 (8)
109 (2.8) 4 (9)
125 (3.2) 4 (10)
140 (3.6) 5 (12)
156 (4.0) 5 (13)
188 (4.8) 6 (15)
235 (6.0) 8 (19)
314 (8.0) 10 (26)
393 (10.0) 13 (32)
472 (12.0) 15 (39)
The screen
c
Inches
(cm)
17 (55)
23 (58)
29 (73)
34 (87)
40 (102)
46 (116)
51 (131)
57 (145)
69 (174)
86 (218)
Lens center
114 (290)
143 (363)
171 (435)
The screen
c
Inches
(cm)
16 (41)
22 (55)
27 (69)
32 (82)
38 (96)
43 (110)
49 (124)
54 (137)
65 (165)
81 (206)
Lens center
108 (275)
135 (343)
162 (412)
Top view
Side view
Top view
Side view