3
Sheet No.: OP06014A
Fig.2 Standard Optical System
Transmitter
Reception distance:L
Light detector face illuminance:E
V
V
OUT
Fig.1 Transmitter
20cm
10kΩ
+5V
PD49PI
V
OUT
Oscilloscope
Transmitter (GL521 used)
Duty 50%
(E
V
is an illuminance by CIE standard light source A (tungsten lamp).)
Using the transmitter shown in Fig. 1, the output signal of the light detecting unit is good enough to meet the following items in the
■ Performance
standard optical system in Fig. 2.
1. Linear reception distance characteristics
*5 It refers to detector face illuminance
When L=0.2 to 5.0m,
*5
E
V＜
10 lx and φ=0°in Fig.2, the output signal shall meet the electrical characteristics in the attached list.
2.Sensitivity angle reception distance characteristics
When L=0.2 to 4.0m,
*5
E
V＜
10 lx and φ≦30°in Fig.2, the output signal shall meet the electrical characteristics in the attached list.
3.Anti outer peripheral light reception distance characteristics
When L=0.2 to 2.5m,
*6
E
V≦
300 lx and φ=0°in Fig.2, the output signal shall meet the electrical characteristics in the attached list.
*6 Outer peripheral light source: CIE standard light source A shall be used and placed at 45°from perpendicular axis at the detector face center
In the above figure, the transmitter should be set so that the output VOUT (P-P) can be 40mV.
However, the PD49PI to be used here should be of the short-circuit current I
SC=2.6μA at EV =100 lx.
( φindicates horizontal and vertical directions.)
GP1US30XP Series
10μF
10kΩ
f0=(*4)
