8 -
ENGLISH
z
In the case of PT-DW830
Unit: m
Lens type
Model number of
projection lens
Aspect
ratio
Projection distance (L) formula
Standard zoom lens
—
16 : 10
Minimum(LW)
L = 1.5651 x SD(m) - 0.0746
Maximum(LT)
L = 2.1855 x SD(m) - 0.0725
16 : 9
Minimum(LW)
L = 1.6086 x SD(m) - 0.0746
Maximum(LT)
L = 2.2462 x SD(m) - 0.0725
4 : 3
Minimum(LW)
L = 1.7715 x SD(m) - 0.0746
Maximum(LT)
L = 2.4736 x SD(m) - 0.0725
Fixed-focus lens
ET-DLE055
16 : 10
—
L = 0.7237 x SD(m) - 0.0476
16 : 9
—
L = 0.7438 x SD(m) - 0.0476
4 : 3
—
L = 0.8191 x SD(m) - 0.0476
Ultra short focus zoom lens
ET-DLE085
16 : 10
Minimum(LW)
L = 0.7209 x SD(m) - 0.0471
Maximum(LT)
L = 0.8923 x SD(m) - 0.0442
16 : 9
Minimum(LW)
L = 0.7409 x SD(m) - 0.0471
Maximum(LT)
L = 0.9171 x SD(m) - 0.0442
4 : 3
Minimum(LW)
L = 0.8159 x SD(m) - 0.0471
Maximum(LT)
L = 1.0100 x SD(m) - 0.0442
Short focus zoom lens
ET-DLE150
16 : 10
Minimum(LW)
L = 1.1822 x SD(m) - 0.0540
Maximum(LT)
L = 1.7055 x SD(m) - 0.0498
16 : 9
Minimum(LW)
L = 1.2151 x SD(m) - 0.0540
Maximum(LT)
L = 1.7529 x SD(m) - 0.0498
4 : 3
Minimum(LW)
L = 1.3381 x SD(m) - 0.0540
Maximum(LT)
L = 1.9304 x SD(m) - 0.0498
Intermediate focus zoom lens
ET-DLE250
16 : 10
Minimum(LW)
L = 2.0649 x SD(m) - 0.0800
Maximum(LT)
L = 3.2612 x SD(m) - 0.0792
16 : 9
Minimum(LW)
L = 2.1223 x SD(m) - 0.0800
Maximum(LT)
L = 3.3519 x SD(m) - 0.0792
4 : 3
Minimum(LW)
L = 2.3371 x SD(m) - 0.0800
Maximum(LT)
L = 3.6912 x SD(m) - 0.0792
Long focus zoom lens
ET-DLE350
16 : 10
Minimum(LW)
L = 3.2550 x SD(m) - 0.1351
Maximum(LT)
L = 4.9185 x SD(m) - 0.1346
16 : 9
Minimum(LW)
L = 3.3455 x SD(m) - 0.1351
Maximum(LT)
L = 5.0553 x SD(m) - 0.1346
4 : 3
Minimum(LW)
L = 3.6842 x SD(m) - 0.1351
Maximum(LT)
L = 5.5671 x SD(m) - 0.1346
Ultra long focus zoom lens
ET-DLE450
16 : 10
Minimum(LW)
L = 4.9277 x SD(m) - 0.3017
Maximum(LT)
L = 7.7903 x SD(m) - 0.2991
16 : 9
Minimum(LW)
L = 5.0647 x SD(m) - 0.3017
Maximum(LT)
L = 8.0069 x SD(m) - 0.2991
4 : 3
Minimum(LW)
L = 5.5775 x SD(m) - 0.3017
Maximum(LT)
L = 8.8174 x SD(m) - 0.2991
Note
z
The values obtained from the above formulas may contain slight errors.
z
The throw ratio is based on the value during projection of a 3.81 m (150") size image.
z
When GEOMETRY or KEYSTONE adjustment is used, compensation is made so that the projected image size
becomes smaller than the specified size.
Standard installation dimensions (continued)
