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. 666-6570
Mfr. Part No.GP2Y0D21YK0F
BrandSharp
TWD315.00
Each
units
- - - - - - - - - - - +60°C -10°C -
RS Stock No. 146-0743
Mfr. Part No.GP2Y0A51SK2F
BrandSharp
TWD152.40
Each (In a Tray of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 170-9657
Mfr. Part No.SFH 9206-5/6
TWD18.00
Each (On a Reel of 1000)
units
1 → 5mm Phototransistor 30µs 40µs - 6 Surface Mount - 4.2 x 3.4 x 2.1mm 2.1mm 4.2mm +100°C -40°C 3.4mm
RS Stock No. 788-4928
Mfr. Part No.EE-SY1200
BrandOmron
TWD114.50
Each (In a Pack of 2)
units
4mm Phototransistor 30µs 30µs 10 4 Surface Mount SMD 3.2 x 1.9 x 1.1mm 1.1mm 3.2mm +85°C -25°C 1.9mm
RS Stock No. 146-0777
Mfr. Part No.GP2A25J0000F
BrandSharp
TWD224.00
Each (In a Pack of 2)
units
9 (Detection) mm, 27 (Non-Detection) mm Photointerrupter - - - - Surface Mount - 39.8 x 9 x 8.65mm 8.65mm 39.8mm +60°C -10°C 9mm
RS Stock No. 146-0732
Mfr. Part No.GP2A28CJ000F
BrandSharp
TWD191.60
Each (In a Bag of 100)
units
9 (Detection) mm, 27 (Non-Detection) mm Photointerrupter - - - - Surface Mount - 26.8 x 9 x 8mm 8mm 26.8mm +60°C -10°C 9mm
RS Stock No. 170-2820
Mfr. Part No.EE-SY1200
BrandOmron
TWD51.30
Each (On a Reel of 2000)
units
4mm Phototransistor 30µs 30µs 10 4 Surface Mount SMD 3.2 x 1.9 x 1.1mm 1.1mm 3.2mm +85°C -25°C 1.9mm
RS Stock No. 182-8100
Mfr. Part No.RPI-122
BrandROHM
TWD46.00
Each (In a Pack of 10)
units
0.8mm Phototransistor 10µs 10µs 1 4 Through Hole - 3.6 x 3.4 x 3.3mm 3.3mm 3.6mm +85°C -25°C 3.4mm
RS Stock No. 667-5041
Mfr. Part No.GP2S60
BrandSharp
TWD29.20
Each (In a Pack of 5)
units
0.7mm Phototransistor 20µs 20µs 1 4 Surface Mount SMD 3.2 x 1.7 x 1.1mm 1.1mm 3.2mm +85°C -25°C 1.7mm
RS Stock No. 146-0784
Mfr. Part No.GP2A25NJJ00F
BrandSharp
TWD214.00
Each (In a Pack of 2)
units
9 (Detection) mm, 27 (Non-Detection) mm Photointerrupter - - - - Surface Mount - 39.8 x 9 x 8.65mm 8.65mm 39.8mm +60°C -10°C 9mm
RS Stock No. 876-8824
Mfr. Part No.SFH 9540
TWD69.10
Each (In a Pack of 10)
units
- - - - - 4 Surface Mount - 13.46 x 6.8 x 10mm - - - - -
RS Stock No. 178-2947
Mfr. Part No.HSDL-9100-021
BrandBroadcom
TWD34.40
Each (On a Reel of 2500)
units
5mm Photodiode 50ns 50ns - 4 Surface Mount SMD 6.9 x 2.78 x 2.7mm 2.7mm 6.9mm +85°C -40°C 2.75mm
RS Stock No. 826-4671
Mfr. Part No.GP1S51VJ000F
BrandSharp
TWD21.80
Each (In a Pack of 10)
units
- Phototransistor 15µs 20µs 1 4 Through Hole - 12.2 x 10 x 5mm 5mm 12.2mm +85°C -25°C 10mm
RS Stock No. 168-5476
Mfr. Part No.SFH 9206
TWD16.50
Each (On a Reel of 1000)
units
5mm Phototransistor 30µs 40µs 1 6 Surface Mount SMD 6.2 x 2.1 x 4.2mm 4.2mm 6.2mm +100°C -40°C 2.1mm
RS Stock No. 414-197
Mfr. Part No.OPB720B-06Z
BrandOptek
TWD523.00
Each
units
152mm Open Collector - - 1 3 - - 17.15 x 8.38 x 27.94mm 27.94mm 17.15mm +70°C 0°C 8.38mm
RS Stock No. 146-0788
Mfr. Part No.GP2Y0A51SK2F
BrandSharp
TWD200.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 146-0785
Mfr. Part No.GP2Y1012AU0F
BrandSharp
TWD405.00
Each
units
- - - - - - Surface Mount - 46 x 34 x 17.6mm 17.6mm 46mm +65°C -10°C 34mm
RS Stock No. 146-0727
Mfr. Part No.GP2A200LCS0F
BrandSharp
TWD126.40
Each (In a Bag of 100)
units
22 (Detection) mm, 90 (Non-Detection) mm Photointerrupter - - - - Surface Mount - 39.8 x 9 x 8.65mm 8.65mm 39.8mm +70°C -10°C 9mm
RS Stock No. 178-5030
Mfr. Part No.GP1A57HRJ00F
BrandSharp
TWD65.30
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. 182-8085
Mfr. Part No.RPI-0125
BrandROHM
TWD21.50
Each (In a Pack of 10)
units
1.2mm Phototransistor 10µs 10µs 1 4 Surface Mount - 3.6 x 3.3 x 2.8mm 2.8mm 3.6mm +85°C -25°C 3.3mm