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. 161-2156
Mfr. Part No.VCNT2020
BrandVishay
$0.791
Each (In a Pack of 10)
units
2.5mm Phototransistor 10µs 15µs - 4 Surface Mount SMD 2.5 x 2 x 0.8mm 0.8mm 2.5mm 85°C -25°C 2mm
RS Stock No. 146-0788
Mfr. Part No.GP2Y0A51SK2F
BrandSharp
$7.95
Each
units
- - - - - - - - - - - - - -
RS Stock No. 146-0768
Mfr. Part No.GP2A28AJ000F
BrandSharp
$10.88
Each
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. 146-0746
Mfr. Part No.GP2Y0A51SK0F
BrandSharp
$10.53
Each (In a Tray of 50)
units
15cm - - - - - Surface Mount - 27 x 13.2 x 12mm 12mm 27mm +60°C -10°C 13.2mm
RS Stock No. 146-0743
Mfr. Part No.GP2Y0A51SK2F
BrandSharp
$6.683
Each (In a Tray of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 146-0786
Mfr. Part No.GP2Y0A51SK0F
BrandSharp
$14.44
Each
units
15cm - - - - - Surface Mount - 27 x 13.2 x 12mm 12mm 27mm +60°C -10°C 13.2mm
RS Stock No. 146-0735
Mfr. Part No.GP2A210LCSJF
BrandSharp
$8.026
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
RS Stock No. 146-0730
Mfr. Part No.GP2A28AJ000F
BrandSharp
$9.063
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. 146-0729
Mfr. Part No.GP2A25DJ000F
BrandSharp
$9.001
Each (In a Bag of 100)
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
New
RS Stock No. 203-5885
Mfr. Part No.MAX86916EFD+
$11.38
Each (In a Tray of 308)
units
- - - - - - Surface Mount - - - - - - -
RS Stock No. 146-0777
Mfr. Part No.GP2A25J0000F
BrandSharp
$10.60
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. 146-0774
Mfr. Part No.GP2A210LCSJF
BrandSharp
$10.96
Each
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
RS Stock No. 170-0731
Mfr. Part No.OPB720B-30VZ
BrandOptek
$36.12
Each (In a Bag of 25)
units
762mm Open Collector - - 1 3 - - 17.15 x 8.38 x 27.94mm 27.94mm 17.15mm +70°C 0°C 8.38mm
New
RS Stock No. 203-5886
Mfr. Part No.MAX86916EFD+
$18.20
Each
units
- - - - - - Surface Mount - - - - - - -
RS Stock No. 146-0784
Mfr. Part No.GP2A25NJJ00F
BrandSharp
$10.15
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. 146-0727
Mfr. Part No.GP2A200LCS0F
BrandSharp
$5.63
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. 182-8042
Mfr. Part No.RPR-220PC30N
BrandROHM
$5.26
Each (In a Tube of 2500)
units
6mm Phototransistor 10µs 10µs 1 4 Through Hole - 6.4 x 4.9 x 6.5mm 6.5mm 6.4mm +85°C -25°C 4.9mm
RS Stock No. 161-2050
Mfr. Part No.VCNT2020
BrandVishay
$0.678
Each (On a Reel of 3000)
units
2.5mm Phototransistor 10µs 15µs - 4 Surface Mount SMD 2.5 x 2 x 0.8mm 0.8mm 2.5mm 85°C -25°C 2mm
RS Stock No. 414-181
Mfr. Part No.OPB720B-30VZ
BrandOptek
$37.65
Each
units
762mm 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. 146-0789
Mfr. Part No.GP2S60B
BrandSharp
$0.995
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
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