CNY70 reflective optocoupler sensor

Optocoupler diffusion, is given, for example, to distinguish edge or line detection. Case dimensions 7 x 7 x 6 mm, installation przewlekany.

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  • Voltage of the diode: 5 V
  • Maximum led current: 50 mA
  • The maximum voltage collector-emitter voltage: 32 V
  • Maximum collector current: 50 mA


Czujnik transoptor odbiciowy

Details in the documentation.




The sensor sends a beam of radiation through the IR transmitter, and then using fototranzystora, measures the intensity of light reflected. The output is a voltage signal dependent on the light intensity falling on the detector. The more light will be reflected and fall into fotodetektora that the output voltage will have a higher cost. How that light reflects the surface of the light ( dark absorbs), so the voltage will be higher, isolated on a white material.

Schemat ideowy CNY70



The sensors are readily used by designers of robots, Line Follower to detect lines, as well as in the construction minisumo, which serve to define the edges of the ring. As, in these cases are the extreme values (to distinguish black from white, intermediate values are not important), the sensor can be located higher above the surface than points in the documentation. From our experience it follows that with appropriate selection of resistors, sensors incorrectly distinguish the black tape from the white background from a distance of about 1 cm.

In the industry the system can be used, for example, edge detection or detection of objects at close range. The sensor is easy to install housing przewlekaną. The envelope protection that allows you to completely squeeze the detector and transmitter to the base.


Czujniki odbiciowe CNY70


Connection example

The sensor consists of two main parts: a detector in the form of fototranzystora, and transmitter, where the infrared led. The transmitter is not damaged, you should limit its current (max. 50 mA), and, consequently, the infrared power. This is done through the resistor connected in series (R3). For proper operation fototranzystora necessary podciągający resistor (marked on the figure as R4). Values must be selected using the documentation (example on the picture below).

Przykład podłączenia CNY70



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Poczta Polska

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9,90 PLN17,90 PLN1-3 days

Kurier GLS

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14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
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  • Free delivery does not apply when changing orders.
  • The delivery period is counted in working days from the date of dispatch of the order.