20cm

10k

Ω

+ 5V

Vout

Vout

Duty 50%

θ

θ

,

φ

,

φ

Performance

Oscilloscope

φ : Direction X

θ : Direction Y

Direction Y

Direction X

External disturbing light

detector face illuminance : Ee

Transmitter

Reception distance : L

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 standard optical system in Fig. 2.

(1) Linear reception distance characteristics

When L=0.2 to 5 m, Ee < 10 lx ( *4) 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 3 m, Ee < 10 lx ( *4) and

φ<= 30 ˚ in the direction X and θ =0˚ in the direction Y in Fig. 2,

the output signal shall meet the electrical characteristics in the attached list. Further, the electrical characteristics shall be met

when L=0.2 to 5 m, Ee < 10 lx (*4) and

φ =0˚ in the direction X and θ<= 15˚ in the direction Y.

Transmitter (GL521 used)

IS1U60/IS1U60L

*4 It refers to detector face illuminance.

In the above figure, the transmitter should be set so that the output Vout can be 40mV

.

However, the PD49PI to be used here should be of the short-circuit current I

=2.6

µ A at Ev=100 lx.

(Ev is an illuminance by CIE standard light source A (tungsten lamp).)

P- P

SC

Fig. 1 Transmitter

Fig. 2 Standard optical system

s