RPM7140-R Datasheet, PDF (3/8 Pages) Rohm – IR Receiver Module

Photo Link Module
(2) Standard transmitter
λ peak=940nm
λ ∆=40nm
20cm
RPM7140-R series
io=VOUT / R
Standard transmitter
RPM-302B
R
VOUT
Fig.2 Measurement of standard transmitter proofreading
When standard transmitter output the signal at Fig.1 standard photodiode output become io=5µAp-p under the
measurement condition Fig.2.
(The radiant intensity of standard transmitter : 50mW / sr)
RPM-302B : standard photodiode has short current Isc=27µA at E=1000(lx)
(using CIE standard light source A)
(3) Measurement effective distance, horizontal & vertical half angle
Standard transmitter
RPM7140-R series
θ
θ
Light detector face
illuminance : Ee
Effective distance : L
(θ ; Indicates horizontal and vertical directions)
Fig.3 Measurement condition for effective distance
Effective distance L
: Effective distance at θ=0° Fig.3
Horizontal & vertical half angle θ : The angle which effective distance became 50% of L.
Rev.B
3/7