Reflective Optical Sensors

Image sensors are devices that convert light waves or electromagnetic radiation that pass through or reflect off the object into a piece of information that constitutes an image. Image sensors are commonly used in photography and videography industries, for producing digital cameras, medical imaging equipment, night vision cameras, thermal imaging devices, radars, sonars etc. Image sensors are built from thousands of small light-sensitive cells that capture the light, recognise the colour and convert it into a digital signal. There are two main types of sensors on the market and they are CCD sensors and CMOS sensors.

CCD

In this sensor every light-sensitive cell is an analogue device. When light strikes the chip it is held as a small electrical charge in each photo cell. The charges in the line of pixels nearest to the (one or more) output amplifiers are amplified and output, then each line of pixels shifts its charges one line closer to the amplifier, filling the empty line closest to the amplifiers. This process is then repeated until all the lines of pixels have had their charge amplified and output.

CMOS

CMOS sensors are different in build from CCD sensors. CMOS image sensor has an amplifier for each pixel compared to the few amplifiers of a CCD. This results in less area for the capture of photons than a CCD, but this problem has been overcome by using micro lenses in front of each photodiode, which focus light into the photodiode that would have otherwise hit the amplifier and not be detected. CMOS sensors can potentially be implemented with fewer components, use less power, and/or provide faster readout than CCD sensors. They are also less vulnerable to static electricity discharges.


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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. 178-7438
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
£5.014
Each (In a Tray of 1000)
Units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6568
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
£8.76
Each
Units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6577
Mfr. Part No.GP2Y0A710K0F
BrandSharp
£20.04
Each
Units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 178-7429
Mfr. Part No.GP2Y0A710K0F
BrandSharp
£11.949
Each (In a Box of 500)
Units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 178-2947
Mfr. Part No.HSDL-9100-021
BrandBroadcom
£1.026
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. 496-6443
Mfr. Part No.HSDL-9100-021
BrandBroadcom
£2.288
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. 666-6564
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
£10.29
Each
Units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 178-7437
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
£5.877
Each (In a Box of 1000)
Units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 170-2386
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
£9.66
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
£12.87
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. 170-0732
Mfr. Part No.OPB720B-06Z
BrandOptek
£13.616
Each (In a Bag of 25)
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. 414-197
Mfr. Part No.OPB720B-06Z
BrandOptek
£13.62
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. 708-5348
Mfr. Part No.CNY70
BrandVishay
£1.346
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. 919-0082
Mfr. Part No.CNY70
BrandVishay
£0.745
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
RS Stock No. 455-0975
Mfr. Part No.SG2BC, BCD
BrandKodenshi
£2.718
Each (In a Pack of 5)
Units
- Phototransistor 30µs 30µs - 4 - - - - - +90°C -20°C -
RS Stock No. 170-0777
Mfr. Part No.OPB702
BrandOptek
£2.84
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
RS Stock No. 455-0931
Mfr. Part No.OPB702
BrandOptek
£2.92
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. 894-7124
Mfr. Part No.SFH 7060
£2.58
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. 178-7542
Mfr. Part No.QRE1113
Brandonsemi
£0.483
Each (In a Bag of 1600)
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. 862-9400
Mfr. Part No.QRE1113
Brandonsemi
£1.087
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