Setting up

■■Formula to calculate projection distance per projection lens (for

PT-DW17KE)

Projection lens

Throw ratio

Aspect ratio

 

Projection distance (L) formula

 

 

1.5 to 2.0:1

16:9

Min. (LW)

L = 1.3504 x SD (m) – 0.0760

 

ET-D75LE1

Max. (LT)

L = 1.8031 x SD (m) – 0.1004

 

 

 

 

2.0 to 2.7:1

4:3

Min. (LW)

L = 1.6496 x SD (m) – 0.0760

 

 

 

 

Max. (LT)

L = 2.2047 x SD (m) – 0.1004

 

 

 

 

 

 

2.1 to 3.1:1

16:9

Min. (LW)

L = 1.8110 x SD (m) – 0.0795

 

ET-D75LE2

Max. (LT)

L = 2.7126 x SD (m) – 0.1064

 

 

 

 

2.7 to 4.1:1

4:3

Min. (LW)

L = 2.2165 x SD (m) – 0.0795

 

 

 

 

Max. (LT)

L = 3.3228 x SD (m) – 0.1064

 

 

 

 

 

 

3.1 to 5.2:1

16:9

Min. (LW)

L = 2.7126 x SD (m) – 0.0958

 

ET-D75LE3

Max. (LT)

L = 4.5315 x SD (m) – 0.1216

 

 

 

 

4.1 to 6.9:1

4:3

Min. (LW)

L = 3.3228 x SD (m) – 0.0958

 

 

 

 

Max. (LT)

L = 5.5472 x SD (m) – 0.1216

 

 

 

 

 

 

5.2 to 8.2:1

16:9

Min. (LW)

L = 4.5315 x SD (m) – 0.1158

 

ET-D75LE4

Max. (LT)

L = 7.2087 x SD (m) – 0.1013

 

 

 

 

6.9 to 11.0:1

4:3

Min. (LW)

L = 5.5472 x SD (m) – 0.1158

 

 

 

 

Max. (LT)

L = 8.8228 x SD (m) – 0.1013

 

 

 

 

 

 

8.2 to 15.4:1

16:9

Min. (LW)

L = 7.2087 x SD (m) – 0.3862

 

ET-D75LE8

Max. (LT)

L = 13.5039 x SD (m) – 0.3598

 

 

 

 

10.9 to 20.5:1

4:3

Min. (LW)

L = 8.8228 x SD (m) – 0.3862

 

 

Zoom lens

 

Max. (LT)

L = 16.5354 x SD (m) – 0.3598

 

 

 

 

1.0 to 1.2:1

16:9

Min. (LW)

L = 0.9094 x SD (m) – 0.0566

 

 

 

ET-D75LE6

Max. (LT)

L = 1.0906 x SD (m) – 0.0736

 

 

 

 

1.4 to 1.6:1

4:3

Min. (LW)

L = 1.1142 x SD (m) – 0.0566

 

 

 

 

Max. (LT)

L = 1.3346 x SD (m) – 0.0736

 

 

 

 

 

 

1.4 to 1.9:1

16:9

Min. (LW)

L = 1.2756 x SD (m) – 0.0857

 

ET-D75LE10

Max. (LT)

L = 1.6496 x SD (m) – 0.1085

 

 

 

 

1.9 to 2.5:1

4:3

Min. (LW)

L = 1.5630 x SD (m) – 0.0857

 

 

 

 

Max. (LT)

L = 2.0197 x SD (m) – 0.1085

 

 

 

 

 

 

1.8 to 2.7:1

16:9

Min. (LW)

L = 1.6339 x SD (m) – 0.0832

 

ET-D75LE20

Max. (LT)

L = 2.3701 x SD (m) – 0.1162

 

 

 

 

2.5 to 3.6:1

4:3

Min. (LW)

L = 2.0000 x SD (m) – 0.0832

 

 

 

 

Max. (LT)

L = 2.9055 x SD (m) – 0.1162

 

 

 

 

 

 

2.7 to 5.2:1

16:9

Min. (LW)

L = 2.3543 x SD (m) – 0.1131

 

ET-D75LE30

Max. (LT)

L = 4.5669 x SD (m) – 0.1765

 

 

 

 

3.6 to 6.9:1

4:3

Min. (LW)

L = 2.8819 x SD (m) – 0.1131

 

 

 

 

Max. (LT)

L = 5.5906 x SD (m) – 0.1765

 

 

 

 

 

 

5.1 to 8.2:1

16:9

Min. (LW)

L = 4.5079 x SD (m) – 0.1577

 

ET-D75LE40

Max. (LT)

L = 7.1890 x SD (m) – 0.1615

 

 

 

 

6.8 to 10.9:1

4:3

Min. (LW)

L = 5.5197 x SD (m) – 0.1577

 

 

 

 

Max. (LT)

L = 8.8031 x SD (m) – 0.1615

 

 

 

 

 

ET-D75LE5

0.8:1

16:9

—

L = 0.6929 x SD (m) – 0.0835

Fixed-focus

1.0:1

4:3

—

L = 0.8504 x SD (m) – 0.0835

 

lens

ET-D75LE50

0.8:1

16:9

—

L = 0.6929 x SD (m) – 0.0713

 

1.0:1

4:3

—

L = 0.8465 x SD (m) – 0.0713

 

 

Getting Started

ENGLISH - 41