Toshiba TDP-P9 owner manual Projection Distance and Size, As seen from above

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.)

		projection	projection distance a (m)		height (H)
Screen	As seen from above				(cm)
		size	min length	max length
					min length	max length
		(inches)	(zooming max)	(zooming min)	(zooming max)	(zooming min)
		40	1.6	1.8	8.7	8.8
90°		60	2.3	2.8	12.5	13.1
		80	3.1	3.7	16.8	17.3
		100	4	4.7	21.7	21.9
		150	6	7.3	32.5	32.9
		200	8	9.4	41.9	43.9
		250	10	11.7	52.4	54.8
		300	12	14.1	65	65.8
		projection	projection distance a (inch)		height (H)
	As seen from the side				(inch)
		size	min length	max length
					min length	max length
		(inches)	(zooming max)	(zooming min)	(zooming max)	(zooming min)
		40	63	71	3	3
	Lens center	60	91	110	5	5
		80	120	150	7	7
		100	160	190	9	9
		150	240	290	13	13
H		200	320	370	16	17
		250	390	460	21	22
90°		300	470	560	26	26
	a	1 inch=2.54 cm

Preparations

a is the distance between the lens and the screen, and corresponds to a range of 1.6m to 13.7m (63.0 inches to 539.4 inches). H is the height from the image bottom to the center of the lens.

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