Setting-up dimensions which are not given in the table can be calculated using the formulas below.

SD (m): Screen size (diagonal)

 

 

 

 

LW:

Projection distance for the wide lens position

 

 

LT:

Projection distance for the telephoto lens position

 

 

 

 

 

 

 

 

Model No. of projection lens Aspect ratio

 

 

Methods of calculation of Projection distance (L)

Unit: mm

 

 

 

4:3

LW = 0.027xSD/0.0254-0.0523

 

 

ET-LE10

 

LT = 0.0355xSD/0.0254-0.0509

 

 

 

 

 

 

(1.3-1.7:1)

 

 

 

 

 

 

 

16:9

LW = 0.0294xSD/0.254-0.0523

 

 

 

 

 

 

 

 

LT = 0.0387xSD/0.0254-0.0509

 

 

 

 

 

 

 

 

 

 

 

 

 

4:3

LW = 0.0554xSD/0.0254-0.134

 

 

ET-LE20

 

LT = 0.0871xSD/0.0254-0.136

 

lens

 

 

 

(2.6-4.2:1)

 

16:9

LW = 0.0604xSD/0.254-0.134

 

Zoom

 

 

 

 

 

 

 

LT = 0.0949xSD/0.254-0.136

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4:3

LW = 0.0809xSD/0.0254+0.104

 

 

ET-LE30

 

LT = 0.1147xSD/0.0254+0.096

 

 

 

 

 

 

(4.0-5.6:1)

 

 

 

 

 

 

 

16:9

LW = 0.0881xSD

/0.0254+

0.104

 

 

 

 

 

 

LT = 0.1250xSD

/0.0254+

0.096

 

 

 

 

 

 

 

 

 

 

 

Others

E NGLISH

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