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. 835-3096
Mfr. Part No.SFH 7050
TWD94
Each (In a Pack of 5)
units
- - - - - 8 Surface Mount - 4.7 x 2.5 x 0.9mm - - - - -
New
RS Stock No. 168-5549
Mfr. Part No.SFH 7050
TWD44
Each (On a Reel of 3000)
units
- - - - - 8 Surface Mount - 4.7 x 2.5 x 0.9mm - - - - -
RS Stock No. 919-0001
Mfr. Part No.TCRT5000
BrandVishay
TWD21
Each (In a Tube of 50)
units
2.5mm - - - - - - - - - - - - -
RS Stock No. 708-5017
Mfr. Part No.TCRT5000
BrandVishay
TWD23
Each (In a Pack of 5)
units
2.5mm Phototransistor - - 1 - Through Hole PCB - 7mm 10.2mm + 85°C - 25°C -
New
RS Stock No. 170-2386
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
TWD660
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
TWD666
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. 124-9128
Mfr. Part No.SFH 7070
TWD64
Each (In a Pack of 5)
units
- - - - - - - - - - - - - -
New
RS Stock No. 168-5232
Mfr. Part No.SFH 7070
TWD57
Each (On a Reel of 1500)
units
- - - - - - - - - - - - - -
RS Stock No. 666-6568
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
TWD248
Each
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 146-1668
Mfr. Part No.SFH 7051
TWD34
Each (On a Reel of 3000)
units
- - - - - 8 Surface Mount - 4.7 x 2.5 x 0.9mm - - - - -
RS Stock No. 876-9439
Mfr. Part No.SFH 7051
TWD56
Each (In a Pack of 5)
units
- - - - - 8 Surface Mount - 4.7 x 2.5 x 0.9mm - - - - -
RS Stock No. 708-5348
Mfr. Part No.CNY70
BrandVishay
TWD51
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. 455-0975
Mfr. Part No.SG2BC, BCD
BrandKodenshi
TWD35
Each (In a Pack of 5)
units
- Phototransistor 30µs 30µs - 4 - - - - - +90°C -20°C -
RS Stock No. 666-6577
Mfr. Part No.GP2Y0A710K0F
BrandSharp
TWD615
Each
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 919-0082
Mfr. Part No.CNY70
BrandVishay
TWD20
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
New
RS Stock No. 165-2675
Mfr. Part No.TCRT1000
BrandVishay
TWD17
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
TWD47
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. 455-0931
Mfr. Part No.OPB702
BrandOptek
TWD85
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. 820-3171
Mfr. Part No.HOA0149-001
BrandHoneywell
TWD116
Each
units
3.81mm Phototransistor 15ns 15ns - 4 Through Hole Side Looker 8.89 x 17.78 x 4.83mm 4.83mm 8.89mm +85°C -40°C 17.78mm
New
RS Stock No. 170-0777
Mfr. Part No.OPB702
BrandOptek
TWD124
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