GP1UD26XK Series/GP1UD27XK Series/GP1UD28XK Series/GP1UD28YK Series

Fig.1 Internal Block Diagram

GND

B.P.F.

Demodulator

Limiter

AMP

Integrator

Comparator

TYP.

100k

Ω

Fig.2 Transmitter

20cm

10k

Ω

+5V

Oscilloscope

Transmitter (GL521 used)

Duty 50%

=2.6µA at E

V

=100 lx

s Performance

Using the transmitter shown in Fig.2, the output signal of the light detecting unit is good enough to meet the following items in the

standard optical system in Fig.3.

1. Linear reception distance characteristics

When L=0.2 to 10.0m,

2. Sensitivity angle reception distance characteristics

When L=0.2 to 7.5m,

3. Anti outer peripheral light reception distance characteristics

When L=0.2 to 5.0m,

*5 It refers to detector face illuminance

*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