12
附表
/ Appendix
z
投影距离计算方法
z
Projection distance formulas
下表中的尺寸可能略有误差。
在下表的计算公式中,
句点代表小数点。
The dimensions of the following table contain a slight error.
Periods are used to represent decimal points in the calculation formulas in the following
table.
z
PT-SMZ77C / PT-SMZ67C / PT-SMZ57C / PT-SLZ77C
(
单位
/ Unit : m)
L
LW
LT
ET-ELW21C
当屏幕宽高比为
16:10
时
When the screen aspect ratio is 16:10
= 0.6763 x SD - 0.0577
当屏幕宽高比为
16:9
时
When the screen aspect ratio is 16:9
= 0.6951 x SD - 0.0577
当屏幕宽高比为
4:3
时
When the screen aspect ratio is 4:3
= 0.7656 x SD - 0.0577
ET-ELW20C
当屏幕宽高比为
16:10
时
When the screen aspect ratio is 16:10
= 1.0557 x SD - 0.0555 = 1.4374 x SD - 0.0534
当屏幕宽高比为
16:9
时
When the screen aspect ratio is 16:9
= 1.0851 x SD - 0.0555 = 1.4774 x SD - 0.0534
当屏幕宽高比为
4:3
时
When the screen aspect ratio is 4:3
= 1.1952 x SD - 0.0555 = 1.6273 x SD - 0.0534
ET-ELT22C
当屏幕宽高比为
16:10
时
When the screen aspect ratio is 16:10
= 2.3662 x SD - 0.1140 = 3.8583 x SD - 0.1129
当屏幕宽高比为
16:9
时
When the screen aspect ratio is 16:9
= 2.4320 x SD - 0.1140 = 3.9656 x SD - 0.1129
当屏幕宽高比为
4:3
时
When the screen aspect ratio is 4:3
= 2.6788 x SD - 0.1140 = 4.3680 x SD - 0.1129
ET-ELT23C
当屏幕宽高比为
16:10
时
When the screen aspect ratio is 16:10
= 3.8667 x SD - 0.2123 = 6.1416 x SD - 0.2108
当屏幕宽高比为
16:9
时
When the screen aspect ratio is 16:9
= 3.9742 x SD - 0.2123 = 6.3123 x SD - 0.2108
当屏幕宽高比为
4:3
时
When the screen aspect ratio is 4:3
= 4.3775 x SD - 0.2123 = 6.9529 x SD - 0.2108