Reflective Optical Sensors

Reflective optical sensors are photoelectrical sensors that are used to detect the presence or absence of objects, or measure the distance to those objects. They are a non-contact type of sensor, often used in the automation industry. They can be used to provide real-time information in a manufacturing setting in order to keep processes running smoothly.

How do reflective optical sensors work?

A reflector is positioned opposite the light sensor, and a light beam is passed back and forth between the two. When an object is present, the beam is interrupted, and the sensor will send an electrical signal to the output device.

In some cases, polarising filters may be needed if the objects being detected are themselves reflective. These allow the sensor to tell the difference between light reflected by the reflector and the object.

Advantages of using reflective optical sensors

The advantage of using a reflective optical sensor over a through beam sensor is that they are much easier and less time consuming to install. This is because the transmitter and receiver are housed within the same body.


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Description Price Peak Sensor Distance Output Device Typical Rise Time Typical Fall Time Number of Channels Number of Pins Mounting Type Package Type Dimensions Height Length Maximum Operating Temperature Minimum Operating Temperature Width
RS Stock No. 178-7429
Mfr. Part No.GP2Y0A710K0F
BrandSharp
PHP758.10
Each (In a Box of 500)
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6577
Mfr. Part No.GP2Y0A710K0F
BrandSharp
PHP1,023.75
Each
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6564
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
PHP596.40
Each
units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 178-7437
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
PHP340.905
Each (In a Box of 1000)
units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 168-5232
Mfr. Part No.SFH 7070
PHP63.84
Each (On a Reel of 1500)
units
- - - - - - - - - - - - - -
RS Stock No. 124-9128
Mfr. Part No.SFH 7070
PHP98.80
Each (In a Pack of 5)
units
- - - - - - - - - - - - - -
RS Stock No. 178-7438
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
PHP306.08
Each (In a Tray of 1000)
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6568
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
PHP510.30
Each
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 835-3096
Mfr. Part No.SFH 7050
PHP90.036
Each (In a Pack of 5)
units
- - - - - 8 Surface Mount - 4.7 x 2.5 x 0.9mm - - - - -
RS Stock No. 170-2386
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
PHP576.98
Each (In a Tray of 50)
units
1500mm - - - - 3 Screw Mount - 44.5 x 18.9 x 21.6mm 21.6mm 44.5mm +60°C -10°C 18.9mm
RS Stock No. 315-450
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
PHP779.63
Each
units
1500mm - - - - 3 Screw Mount - 44.5 x 18.9 x 21.6mm 21.6mm 44.5mm +60°C -10°C 18.9mm
RS Stock No. 919-0082
Mfr. Part No.CNY70
BrandVishay
PHP27.74
Each (In a Tube of 80)
units
0.5mm Phototransistor - - 1 4 Through Hole - 7 x 7 x 6mm 6mm 7mm +85°C -40°C 7mm
RS Stock No. 708-5348
Mfr. Part No.CNY70
BrandVishay
PHP40.746
Each (In a Pack of 5)
units
0.5mm Phototransistor - - 1 4 Through Hole - 7 x 7 x 6mm 6mm 7mm +85°C -40°C 7mm
RS Stock No. 826-4640
Mfr. Part No.GP1A57HRJ00F
BrandSharp
PHP98.08
Each (In a Pack of 5)
units
- Transistor 0.5µs 0.5µs 1 5 Through Hole OPIC 18.6 x 15.2 x 5mm 5mm 18.6mm +85°C -25°C 15.2mm
RS Stock No. 178-5030
Mfr. Part No.GP1A57HRJ00F
BrandSharp
PHP100.28
Each (In a Bag of 100)
units
- Transistor 0.5µs 0.5µs 1 5 Through Hole OPIC 18.6 x 15.2 x 5mm 5mm 18.6mm +85°C -25°C 15.2mm
RS Stock No. 666-6570
Mfr. Part No.GP2Y0D21YK0F
BrandSharp
PHP473.55
Each
units
- - - - - - - - - - - +60°C -10°C -
RS Stock No. 708-5017
Mfr. Part No.TCRT5000
BrandVishay
PHP61.97
Each (In a Pack of 5)
units
2.5mm Phototransistor - - 1 - Through Hole PCB - 7mm 10.2mm + 85°C - 25°C -
RS Stock No. 919-0001
Mfr. Part No.TCRT5000
BrandVishay
PHP31.14
Each (In a Tube of 50)
units
2.5mm - - - - - - - - - - - - -
RS Stock No. 876-8824
Mfr. Part No.SFH 9540
PHP53.923
Each (In a Pack of 10)
units
- - - - - 4 Surface Mount - 13.46 x 6.8 x 10mm - - - - -
RS Stock No. 666-6580
Mfr. Part No.GP2Y0D810Z0F
BrandSharp
PHP242.83
Each
units
100mm Photodiode - - - - - - - - - +60°C -10°C -
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