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Sheet No.: OP06012

Fig.2 Standard Optical System

Transmitter

Reception distance:L

Light detector face illuminance:EV

VOUT

Fig.1 Transmitter

20cm

10kΩ

5V

VOUT

Oscilloscope

Transmitter (GL521 used)

f0 (*4)

Duty 50%

(EV 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 8.5m, *5EV＜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 6.0m, *5EV＜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 4.0m, *6EV≦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 ISC=2.6μA at EV =100 lx.

( φindicates horizontal and vertical directions.)

GP1UX51QS Series