NEC MT830TM /1030TM - Manual (Page 19)

19
35
36
Distance Chart
A
C
D
E
Formulas(mm)
"H=Horizontal Screen Width
M=1.25H/33.02(Projection magnification)
A=C/cos
α
C (WIDE)=53.2
ן
M-85.609
C (TELE)=C(WIDE) ן 1.3055
D ={(3H/8)-(92.2+8M)}
=1.906M-92.2
E=92.2+8M
Formulas(inch)
"H=Horizontal Screen Width
M=1.25H/1.3(Projection magnification)
A=C/cos
α
C (WIDE)=2.09445 ן M-3.37
C (TELE)=C(WIDE) ן 1.3055
D ={(3H/8)-(92.2+8M)}/25.4
=(1.906M-92.2)/25.4
E=(92.2+8M)/25.4
A : Distance between the lens and the screen center
C : Horizontal throw distance between the screen surface and the lens
D : Vertical distance between the projector bottom and the bottom of image
E : Vertical distance between the projector bottom and the screen center
INSTALLATION
α