LED Radiation Characteristics Irel = f (Ï•)
Phototransistor Directional Characteristics Srel = f (Ï•)
40Ëš
30Ëš
20Ëš
10Ëš
0Ëš
Ï• 1.0
OHL01660
50Ëš
0.8
0.6
60Ëš
0.4
70Ëš
0.2
80Ëš
90Ëš
0
100Ëš
1.0
0.8
0.6
0.4
0Ëš
20Ëš 40Ëš
60Ëš
80Ëš 100Ëš 120Ëš
LED Relative Spectral Emission Irel = f (λ), TA = 25 °C, IF = 20 mA
V(λ) = Standard Eye Response Curve
100
OHL02350
%
Φ rel
80
Vλ
60
40
20
super-red
0
400
450
500
550
600
650 nm 700
λ
SFH 331
2001-02-22
5