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. 919-0001
Mfr. Part No.TCRT5000
BrandVishay
TWD27.70
Each (In a Tube of 50)
units
2.5mm - - - - - - - - - - - - -
RS Stock No. 708-5017
Mfr. Part No.TCRT5000
BrandVishay
TWD40.20
Each (In a Pack of 5)
units
2.5mm Phototransistor - - 1 - Through Hole PCB - 7mm 10.2mm + 85°C - 25°C -
RS Stock No. 315-450
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
TWD459.00
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. 170-2386
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
TWD344.20
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. 178-7438
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
TWD178.70
Each (In a Tray of 1000)
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6568
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
TWD315.00
Each
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 919-0082
Mfr. Part No.CNY70
BrandVishay
TWD26.30
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
TWD45.00
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. 178-7429
Mfr. Part No.GP2Y0A710K0F
BrandSharp
TWD437.00
Each (In a Box of 500)
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6577
Mfr. Part No.GP2Y0A710K0F
BrandSharp
TWD649.00
Each
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 455-0975
Mfr. Part No.SG2BC, BCD
BrandKodenshi
TWD50.20
Each (In a Pack of 5)
units
- Phototransistor 30µs 30µs - 4 - - - - - +90°C -20°C -
RS Stock No. 165-2675
Mfr. Part No.TCRT1000
BrandVishay
TWD15.80
Each (In a Bag of 1000)
units
1mm Phototransistor - - 1 4 Through Hole - 7 x 2.5 x 4mm 4mm 7mm +85°C -40°C 2.5mm
RS Stock No. 708-2737
Mfr. Part No.TCRT1000
BrandVishay
TWD40.60
Each (In a Bag of 5)
units
1mm Phototransistor - - 1 4 Through Hole - 7 x 2.5 x 4mm 4mm 7mm +85°C -40°C 2.5mm
RS Stock No. 170-0777
Mfr. Part No.OPB702
BrandOptek
TWD93.10
Each (In a Bag of 25)
units
3.81mm Phototransistor - - 1 4 Through Hole - 17.78 x 4.78 x 8.89mm 8.89mm 17.78mm +85°C -40°C 4.78mm
RS Stock No. 455-0931
Mfr. Part No.OPB702
BrandOptek
TWD95.00
Each
units
3.81mm Phototransistor - - 1 4 Through Hole - 17.78 x 4.78 x 8.89mm 8.89mm 17.78mm +85°C -40°C 4.78mm
RS Stock No. 146-0783
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
TWD309.00
Each
units
80cm - - - - - Surface Mount - 37 x 13 x 21.6mm 21.6mm 37mm +60°C -10°C 13mm
RS Stock No. 761-3984
Mfr. Part No.QRE1113GR
TWD36.40
Each (In a Pack of 5)
units
- Phototransistor 20µs 20µs 1 4 Surface Mount SMD 3.6 x 2.9 x 1.7mm 1.7mm 3.6mm +85°C -40°C 2.9mm
RS Stock No. 315-466
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
TWD309.00
Each
units
900mm Digital - - - 3 Surface Mount - 29.5 x 13 x 21.6mm 21.6mm 29.5mm +60°C -10°C 13mm
RS Stock No. 919-1001
Mfr. Part No.VCNL4010-GS08
BrandVishay
TWD45.60
Each (On a Reel of 1800)
units
200mm Microcontroller - - 1 13 Surface Mount - 3.95 x 3.95 x 0.75mm - - +85°C -25°C -
RS Stock No. 894-7124
Mfr. Part No.SFH 7060
TWD91.20
Each (In a Pack of 5)
units
- - 16ns 16ns - 12 Surface Mount Chip 7.2 x 2.5 x 0.9mm 0.9mm 7.2mm +85°C -40°C 2.5mm