Toshiba TDP-T9 Projection Distance and Size, Screen As seen from above As seen from the side

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

90

As seen from the side

Lens center

H

90

a

a (min length) =	projection size (inches)
	25.3807
a (max length) =	projection size (inches)
	23.0947

				Preparations
projection	projection distance a (m)		height
size	min length	max length	(H)
	(zooming	(zooming
(inches)			(cm)
	max)	min)
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
100	3.94	4.33	22.9
150	5.90	6.49	34.3
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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