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Standard installation dimensions (continued)
Projection distance for PT-LW321 and PT-LW271
J
All measurements below are approximate and may differ slightly from the actual measurements. (unit: m ("))
Projection size
For 4:3 aspect ratio
Minimum
Screen
Maximum
diagonal
distance
distance
(SD)
(LW)
0.76 (30")
1.2 (3'11")
1.3 (4'3")
1.02 (40")
1.5 (4'11")
1.7 (5'7")
1.27 (50")
1.9 (6'3")
2.1 (6'11")
1.52 (60")
2.3 (7'7")
2.5 (8'2")
1.78 (70")
2.7 (8'10")
2.9 (9'6")
2.03 (80")
3.0 (9'10")
3.3 (10'10")
2.29 (90")
3.4 (11'2")
3.7 (12'2")
2.54 (100")
3.8 (12'6")
4.2 (13'9")
3.05 (120")
4.5 (14'9")
5.0 (16'5")
3.81 (150")
5.7 (18'8")
6.2 (20'4")
5.08 (200")
7.6 (24'11")
8.3 (27'3")
6.35 (250")
9.5 (31'2")
10.4 (34'1")
7.62 (300")
11.3 (37'1")
12.4 (40'8")
Calculation formulas for projection distance
Q
Any other projection distance can be obtained according to the screen dimensions (m) using the following
calculations. The calculation result is with the "m" unit. (The calculated distance below may contain a certain
error.) If the screen dimensions are written as "SD",
Screen height (SH)
Screen width (SW)
Min. projection distance (LW)
Max. projection distance (LT)
Note
z The throw ratio is 1.55 to 1.70:1 when the projection size is 2.54m (100").
For 16:9 aspect ratio
Minimum
Height
position
distance
(LT)
(H)
(LW)
0.06 (2")
1.0 (3'3")
0.08 (3")
1.4 (4'7")
0.09 (4")
1.7 (5'7")
0.11 (4")
2.1 (6'11")
0.13 (5")
2.4 (7'10")
0.15 (6")
2.7 (8'10")
0.17 (7")
3.1 (10'2")
0.19 (7")
3.4 (11'2")
0.23 (9")
4.1 (13'5")
0.28 (11")
5.1 (16'9")
0.38 (1'3")
6.9 (22'8")
0.47 (1'7")
8.6 (28'3")
0.57 (1'10")
10.3 (33'10") 11.3 (37'1")
For 4:3 aspect ratio
= SD × 0.6
= SD × 0.8
= 1.488 × SD
= 1.632 × SD
For 16:10 aspect ratio
Minimum
Maximum
Height
distance
position
distance
(LT)
(H)
(LW)
1.1 (3'7")
0.07 (3")
1.0 (3'3")
1.5 (4'11")
0.10 (4")
1.3 (4'3")
1.9 (6'3")
0.12 (5")
1.7 (5'7")
2.3 (7'7")
0.14 (6")
2.0 (6'7")
2.6 (8'6")
0.17 (7")
2.3 (7'7")
3.0 (9'10")
0.19 (7")
2.7 (8'10")
3.4 (11'2")
0.22 (9")
3.0 (9'10")
3.8 (12'6")
0.24 (9")
3.3 (10'10")
4.5 (14'9")
0.29 (11")
4.0 (13'1")
5.7 (18'8")
0.36 (1'2")
5.0 (16'5")
7.5 (24'7")
0.48 (1'7")
6.7 (22')
9.4 (30'10")
0.60 (2')
8.3 (27'3")
0.72 (2'4")
10.0 (32'10") 11.0 (36'1")
For 16:9 aspect ratio
For 16:10 aspect ratio
= SD × 0.490
= SD × 0.530
= SD × 0.872
= SD × 0.848
= 1.350 × SD
= 1.314 × SD
= 1.482 × SD
= 1.441 × SD
Maximum
Height
distance
position
(LT)
(H)
1.1 (3'7")
0.05 (2")
1.5 (4'11")
0.07 (3")
1.8 (5'11")
0.08 (3")
2.2 (7'3")
0.10 (4")
2.6 (8'6")
0.12 (5")
2.9 (9'6")
0.13 (5")
3.3 (10'10")
0.15 (6")
3.7 (12'2")
0.17 (7")
4.4 (14'5")
0.20 (8")
5.5 (18'1")
0.25 (10")
7.3 (23'11")
0.33 (1'1")
9.2 (30'2")
0.42 (1'5")
0.50 (1'8")
ENGLISH - 9
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