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. 165-6261
Mfr. Part No.TCRT1010
BrandVishay
€0.409
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. 919-1001
Mfr. Part No.VCNL4010-GS08
BrandVishay
€1.06
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. 146-0785
Mfr. Part No.GP2Y1012AU0F
BrandSharp
€5.50
Each
units
- - - - - - Surface Mount - 46 x 34 x 17.6mm 17.6mm 46mm +65°C -10°C 34mm
RS Stock No. 146-0768
Mfr. Part No.GP2A28AJ000F
BrandSharp
€2.64
Each
units
27 (Non-Detection) mm, 9 (Detection) mm Photointerrupter - - - - Surface Mount - 26.8 x 9 x 8mm 8mm 26.8mm +60°C -10°C 9mm
RS Stock No. 146-0782
Mfr. Part No.GP2A200LCS0F
BrandSharp
€5.075
Each (In a Pack of 2)
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. 146-0732
Mfr. Part No.GP2A28CJ000F
BrandSharp
€4.943
Each (In a Bag of 100)
units
27 (Non-Detection) mm, 9 (Detection) mm Photointerrupter - - - - Surface Mount - 26.8 x 9 x 8mm 8mm 26.8mm +60°C -10°C 9mm
RS Stock No. 862-9400
Mfr. Part No.QRE1113
€0.566
Each (In a Pack of 10)
units
- Phototransistor 20µs 20µs 1 4 Through Hole Miniature 3.6 x 2.9 x 1.7mm 1.7mm 3.6mm +85°C -40°C 2.9mm
RS Stock No. 146-0789
Mfr. Part No.GP2S60B
BrandSharp
€0.497
Each (In a Pack of 20)
units
0.5mm Phototransistor 20µs 20µs - - Surface Mount SMD 3.2 x 1.7 x 1.1mm 1.1mm 3.2mm +85°C -25°C 1.7mm
RS Stock No. 182-8085
Mfr. Part No.RPI-0125
BrandROHM
€0.399
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
RS Stock No. 773-3993
Mfr. Part No.TCND5000
BrandVishay
€2.30
Each
units
6mm Photodiode 800ns 800ns 1 4 Surface Mount - 6 x 3.7 x 3.75mm - - +85°C -40°C -
RS Stock No. 178-2947
Mfr. Part No.HSDL-9100-021
BrandBroadcom
€0.851
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. 146-0786
Mfr. Part No.GP2Y0A51SK0F
BrandSharp
€7.07
Each
units
15cm - - - - - Surface Mount - 27 x 13.2 x 12mm 12mm 27mm +60°C -10°C 13.2mm
RS Stock No. 146-0784
Mfr. Part No.GP2A25NJJ00F
BrandSharp
€5.50
Each (In a Pack of 2)
units
27 (Non-Detection) mm, 9 (Detection) mm Photointerrupter - - - - Surface Mount - 39.8 x 9 x 8.65mm 8.65mm 39.8mm +60°C -10°C 9mm
RS Stock No. 170-2820
Mfr. Part No.EE-SY1200
BrandOmron
€1.484
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. 740-5058
Mfr. Part No.NJL5901AR-1-TE1
€0.638
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
RS Stock No. 894-7124
Mfr. Part No.SFH 7060
€2.386
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
RS Stock No. 182-8092
Mfr. Part No.RPI-121
BrandROHM
€0.717
Each (In a Pack of 20)
units
1mm Phototransistor 10µs 10µs 1 4 Through Hole - 3.6 x 2.6 x 3.3mm 3.3mm 3.6mm +85°C -25°C 2.6mm
RS Stock No. 455-0975
Mfr. Part No.SG2BC, BCD
BrandKodenshi
€2.604
Each (In a Pack of 5)
units
- Phototransistor 30µs 30µs - 4 - - - - - +90°C -20°C -
RS Stock No. 496-6443
Mfr. Part No.HSDL-9100-021
BrandBroadcom
€1.87
Each (In a Pack of 5)
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. 146-0735
Mfr. Part No.GP2A210LCSJF
BrandSharp
€4.347
Each (In a Bag of 100)
units
15 (Detection) mm, 70 (Non-Detection) mm Photointerrupter - - - - Surface Mount - 39.8 x 9 x 8.65mm 8.65mm 39.8mm +70°C -10°C 9mm
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