Toshiba 790, 791 manual Determine the screen size projected on the screen, Top view, Side view

Floor-mounted projector placement (continued)

CONTENTS 18

1	Place the projector on a steady, level surface such as a table.
	To obtain proper screen projection, place the projector so that the light beam hits the screen squarely.

Top view

Screen

90°

Lens center

Point the lens straight at the center of the screen as above.

Side view

Screen

Lens center

90°

Place the projector horizontally so that the projecting light hits the screen squarely.

connectionsInstallation and

2	Determine the screen size projected on the screen.
	The projection size depends on the distance between the lens and the screen.
	Adjust the projection size by changing the distances as shown below.	• The values are approximations.

Screen

Projection size - 1.7382

a (min.) =

23.377

Projection size	a (m)
	Minimum	Maximum
(inches)
	(At maximum zoom)	(At minimum zoom)

b (cm)

a (max.) =

Projection size - 1.3766

23.266

32 (81)	–	1.30
40 (102)	1.30	1.66

5.8

7.3

90°

b

a

b = Projection size (cm) x 0.072

a:Distance between the lens and the screen (m)

b:Distance between the lens height and the bottom of projection area (cm)

60 (152)	1.98	2.52
80 (203)	2.66	3.38
100 (254)	3.34	4.24
150 (381)	5.05	6.39
200 (508)	6.75	8.54
300 (762)	10.15	–

11.0

14.6

18.3

27.4

36.6

54.9

Continued