Projection Distance and Size

Use the figures, tables, and formulas below to determine the projection size and projection distance. (Projection sizes are approximate values for full-size picture with no keystone adjustment.)

Screen As seen from above

a (min length) =

projection size (inches)

25.3807

 

H

90

a (max length) =

projection size (inches)

23.0947

 

 

 

projection

projection distance a (m)

height

Preparations

 

 

 

min length

max length

 

 

size

(H)

 

 

(zooming

(zooming

 

As seen from the side

(inches)

(cm)

 

max)

min)

 

 

 

 

Lens center

34.67

1.36

1.50

7.9

 

40

1.57

1.73

9.1

 

 

 

 

60

2.36

2.60

13.7

 

 

80

3.15

3.46

18.3

 

90

100

3.94

4.33

22.9

 

150

5.90

6.49

34.3

 

a

 

200

7.87

8.65

45.7

 

 

250

9.84

10.82

57.2

 

 

254.22

10

11

58.1

 

a is the distance (m) between the lens and the screen, and corresponds to a range of 1.36 m to 11 m. H is the height from the image bottom to the center of the lens.

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Toshiba TDP-S8 owner manual As seen from the side, Projection Distance and Size