Calculation formulas for projection distance by lens types (for PT-DW7000U)

 

Model number of projection lens

Aspect ratio

 

Projection distance (L) formula

Units: m

 

 

 

 

 

 

 

 

 

 

 

 

ET-D75LE1

16:9

 

Minimal distance: L=0.0343 x Screen diagonal (inch) – 0.0760

 

 

 

 

 

(1.5–2.0 :1)

 

Maximal distance: L=0.0458 x Screen diagonal (inch) – 0.1004

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ET-D75LE2

16:9

 

Minimal distance: L=0.0460 x Screen diagonal (inch) – 0.0795

 

 

 

 

 

(2.0–3.0 :1)

 

Maximal distance: L=0.0689 x Screen diagonal (inch) – 0.1064

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Zoom

 

ET-D75LE3

16:9

 

Minimal distance: L=0.0689 x Screen diagonal (inch) – 0.0958

 

 

 

lens

 

(3.0–5.0 :1)

 

Maximal distance: L=0.1151 x Screen diagonal (inch) – 0.1216

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ET-D75LE4

16:9

 

Minimal distance: L=0.1151 x Screen diagonal (inch) – 0.1158

 

 

 

 

 

(5.0–8.0 :1)

 

Maximal distance: L=0.1831 x Screen diagonal (inch) – 0.1013

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ET-D75LE8

16:9

 

Minimal distance: L=0.1831 x Screen diagonal (inch) – 0.3862

 

 

 

 

 

(8.0–15.0 :1)

 

Maximal distance: L=0.3430 x Screen diagonal (inch) – 0.3598

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fixed-

ET-D75LE5

 

 

 

 

 

 

focus

 

16:9

 

L= 0.0176 x Screen diagonal (inch) – 0.0835

 

 

 

 

(0.8:1)

 

 

 

 

lens

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Panasonic PT-DW7000U, PT-D7700U manual Aspect ratio Projection distance L formula Units m