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When projecting in 1.78:1 (16:9) format
1.78
1
Maximum
Diagonal 1
Width ×
(D1)
Maximum
140-inch
3.10 m ×
projection
(3.56 m)
(122 inches
× 69 inches)
Intermediate
120-inch
2.67 m ×
position
(3.05 m)
(105 inches
× 59 inches)
Shortest
101-inch
2.24 m ×
distance
(2.57 m)
installation
(88 inches ×
50 inches)
Formula 1 (calculates a installation distance from a projection image size)
Maximum projection image size
L1 = 0.1980 × W1 – 44.3078
(L1 = 0.1980 × W1 – 17.444)
L2 = 0.1980 × W1 + 9.1922
(L2 = 0.1980 × W1 + 3.6190)
Formula 2 (calculates a projection image size from a installation distance)
From a projecting surface to the rear of the
unit
W1 = 5.0502 × L1 + 223.7640
(W1 = 5.0502 × L1 + 88.0961)
W2 = 3.1620 × L1 + 139.8246
(W2 = 3.1620 × L1 + 55.0490)
Formula 3 (calculates a distance from a floor to the bottom of a projection image)
Maximum projection image size
H1 = 0.0851 × W1 + 18.6809
(H1 = 0.0851 × W1 + 7.3547)
Video display area
Projection area
Projection image size
Bottom
Diagonal 2
height
Height
(D2)
(H1)
45 cm
88-inch
1.74 m
(18
(2.24 m)
inches)
41 cm
75-inch
1.50 m
(16
(1.91 m)
inches)
38 cm
63-inch
1.26 m
(15
(1.60 m)
inches)
Minimum
Bottom
Width ×
height
Height
(H2)
1.94 m ×
57 cm
1.09 m
(22
(76 inches ×
inches)
43 inches)
1.67 m×
51 cm
0.94 m
(20
(66 inches ×
inches)
37 inches)
1.40 m ×
46 cm
0.79 m
(18
(55 inches ×
inches)
31 inches)
Minimum projection image size
L1 = 0.3163 × W2 – 44.2027
(L1 = 0.3163 × W2 – 17.4097)
L2 = 0.3163 × W2 + 9.2793
(L2 = 0.3163 × W2 + 3.6533)
From a projecting surface to the front of the
unit
W1 = 5.0502 × L2 – 46.4218
(W1 = 5.0502 × L2 – 18.2763)
W2 = 3.1620 × L2 – 29.3402
(W2 = 3.1620 × L2 – 11.5513)
Minimum projection image size
H2 = 0.1953 × W2 + 18.8687
(H2 = 0.1953 × W2 + 7.4286)
Installation Distance and Projection Image Size
Installation distance
From a
From a
projecting
projecting
surface to
surface to
the rear of
the front of
the unit L1
the unit L2
17 cm
70.5 cm
(6.7 inches)
(27.8
inches)
8.5 cm
62.0 cm
(3.3 inches)
(24.4
inches)
0 cm
53.5 cm
(0 inch)
(21.0
inches)
Unit: cm (inches)
Unit: cm (inches)
Unit: cm (inches)
59
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