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TLP848
2007-10-01
11
Relative Positioning of Shutter and Device
For normal operation, position the shutter and the device as shown in the figure below. By considering the
device's detection direction characteristic and switching time, determine the shutter slit width and pitch.
0
0.2
0.4
0.6
0.8
1
1.2
-2 -1 0 1 2 3 4
0
0.2
0.4
0.6
0.8
1
1.2
-1.2 -0.8 -0.4 0 0.4 0.8 1.2
Detection position
characteristics (1) (typ.)
Distance d (mm)
Relative collector current
Detection position
characteristics (2) (typ.)
Distance d (mm)
Relative collector current
I
F
= 5mA
V
CE
= 2V
Ta = 25°C
Detection position
d = 0 ± 0.2mm
0
d
Shutter
+−
I
F
= 5mA
V
CE
= 2V
Ta = 25°C
Detection position
d = 0.75 mm
Shutter
d
+0.6
-0.5
1.35 min
0.75
0.25 max
Center of sensor
Unit: mm
Cross section between A and A'
A
A
’
Shutte
r