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. 170-0783
Mfr. Part No.OPB350W250Z
BrandOptek
SGD10.156
Each (In a Bag of 25)
units
6.35mm Phototransistor - - 1 4 Screw Mount - 29.59 x 7.62 x 13.34mm 13.34mm 29.59mm +85°C -40°C 7.62mm
RS Stock No. 170-0782
Mfr. Part No.OPB732
BrandOptek
SGD5.985
Each (In a Box of 25)
units
1in Phototransistor - - 1 4 Through Hole - 12.19 x 5.08 x 12.7mm 12.7mm 12.19mm +85°C -40°C 5.08mm
RS Stock No. 708-5348
Mfr. Part No.CNY70
BrandVishay
SGD1.992
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. 642-4301
Mfr. Part No.OPB732
BrandOptek
SGD6.10
Each
units
1in Phototransistor - - 1 4 Through Hole - 12.19 x 5.08 x 12.7mm 12.7mm 12.19mm +85°C -40°C 5.08mm
RS Stock No. 642-4323
Mfr. Part No.OPB350W250Z
BrandOptek
SGD10.37
Each
units
6.35mm Phototransistor - - 1 4 Screw Mount - 29.59 x 7.62 x 13.34mm 13.34mm 29.59mm +85°C -40°C 7.62mm
RS Stock No. 165-6261
Mfr. Part No.TCRT1010
BrandVishay
SGD0.737
Each (In a Bag of 1000)
units
1mm Transistor - - 2 4 Through Hole Leaded 7 x 2.5 x 4mm 4mm 7mm +85°C -25°C 2.5mm
RS Stock No. 666-6577
Mfr. Part No.GP2Y0A710K0F
BrandSharp
SGD30.19
Each
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 178-7429
Mfr. Part No.GP2Y0A710K0F
BrandSharp
SGD19.713
Each (In a Box of 500)
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 124-6800
Mfr. Part No.RPR-220
BrandROHM
SGD1.296
Each (In a Pack of 10)
units
6mm Phototransistor 10µs 10µs 1 4 Through Hole Radial 6.4 x 4.9 x 6.5mm 6.5mm 6.4mm +85°C -25°C 4.9mm
RS Stock No. 818-7521
Mfr. Part No.TCRT1010
BrandVishay
SGD1.102
Each (In a Pack of 10)
units
1mm Transistor - - 2 4 Through Hole Leaded 7 x 2.5 x 4mm 4mm 7mm +85°C -25°C 2.5mm
RS Stock No. 826-4640
Mfr. Part No.GP1A57HRJ00F
BrandSharp
SGD4.522
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. 414-175
Mfr. Part No.OPB720A-06Z
BrandOptek
SGD21.64
Each
units
152mm Open Collector - - 1 3 Screw Mount - 17.15 x 8.38 x 27.94mm 27.94mm 17.15mm +50°C 0°C 8.38mm
RS Stock No. 455-0975
Mfr. Part No.SG2BC, BCD
BrandKodenshi
SGD2.33
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
SGD0.727
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. 170-0730
Mfr. Part No.OPB720A-06Z
BrandOptek
SGD21.204
Each (In a Bag of 25)
units
152mm Open Collector - - 1 3 Screw Mount - 17.15 x 8.38 x 27.94mm 27.94mm 17.15mm +50°C 0°C 8.38mm
RS Stock No. 708-2737
Mfr. Part No.TCRT1000
BrandVishay
SGD1.798
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. 178-5030
Mfr. Part No.GP1A57HRJ00F
BrandSharp
SGD2.717
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. 788-4928
Mfr. Part No.EE-SY1200
BrandOmron
SGD4.545
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. 170-9507
Mfr. Part No.SFH 9540
SGD2.25
Each (In a Tube of 70)
units
- - - - - 4 Surface Mount - 13.46 x 6.8 x 10mm - - - - -
RS Stock No. 740-5058
Mfr. Part No.NJL5901AR-1-TE1
SGD0.90
Each (In a Pack of 5)
units
- Phototransistor 30µs 30µs 1 4 Surface Mount COBP - 0.6mm 1.6mm +85°C -30°C 1.3mm
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