Panasonic PT-LB78U manual Screen size and throw distance for 169 aspect ratio, English, Appendix

Technical Information

Screen size and throw distance for 16:9 aspect ratio

Projection size			Throw distance (L)				Throw distance (L)
(16	: 9)		PT-LB80NTU /LB80U			PT-LB78U /LB75NTU / LB75U
Screen diagonal		Minimum distance		Maximum distance		Minimum distance		Maximum distance
(SD)		(LW)		(LT)		(LW)		(LT)
33"	(0.84 m)			1.2 m	(3'11")			1.2 m	(3'11")
40"	(1.02 m)	1.2 m	(3'11")	1.5 m	(4'11")	1.3 m	(4'3")	1.5 m	(4'11")
50"	(1.27 m)	1.6 m	(5'2")	1.9 m	(6'2")	1.6 m	(5'2")	1.9 m	(6'2")
60"	(1.52 m)	1.9 m	(6'2")	2.3 m	(7'6")	1.9 m	(6'2")	2.3 m	(7'6")
70"	(1.78 m)	2.2 m	(7'2")	2.7 m	(8'10")	2.2 m	(7'2")	2.6 m	(8'6")
80"	(2.03 m)	2.5 m	(8'2")	3.0 m	(9'10")	2.5 m	(8'2")	3.0 m	(9'10")
90"	(2.29 m)	2.8 m	(9'2")	3.4 m	(11'1")	2.8 m	(9'2")	3.4 m	(11'1")
100"	(2.54 m)	3.2 m	(10'5")	3.8 m	(12'5")	3.2 m	(10'5")	3.8 m	(12'5")
120"	(3.05 m)	3.8 m	(12'5")	4.6 m	(15'1")	3.8 m	(12'5")	4.6 m	(15'1")
150"	(3.81 m)	4.8 m	(15'8")	5.8 m	(19')	4.7 m	(15'5")	5.7 m	(18'8")
200"	(5.08 m)	6.4 m	(20'11")	7.7 m	(25'3")	6.3 m	(20'8")	7.6 m	(24'11")
250"	(6.35 m)	8.0 m	(26'2")	9.6 m	(31'5")	7.9 m	(25'11")	9.5 m	(31'2")
300"	(7.62 m)	9.6 m	(31'5")	11.6 m	(38')	9.5 m	(31'2")	11.4 m	(37'4")

* All measurements above are approximate and may differ slightly from the actual measurements.

Calculation methods for screen dimensions

You can calculate more detailed screen dimension from the screen diagonal.

Screen width (SW) and screen height (SH)

SW (m) = SD (") x 0.0221 SH (m) = SD (") x 0.0125

Minimum distance (LW) and maximum distance (LT)

PT-LB80NTU:	LW (m) = 0.0321 x SD (") - 0.04	LT (m) = 0.0388 x SD (") - 0.06
PT-LB75NTU:	LW (m) = 0.0318 x SD (") - 0.022	LT (m) = 0.0383 x SD (") - 0.046

* The results above are approximate and may differ slightly from the actual measurements.

Appendix

ENGLISH - 47