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. 666-6568
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
€9.72
Each
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 178-7438
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
€5.566
Each (In a Tray of 1000)
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 145-1738
Mfr. Part No.TCRT5000L
BrandVishay
€0.762
Each (In a Tube of 50)
units
2.5mm Transistor - - 2 4 Through Hole Leaded 10.2 x 5.8 x 8.5mm 8.5mm 10.2mm +85°C -40°C 5.8mm
RS Stock No. 818-7524
Mfr. Part No.TCRT5000L
BrandVishay
€0.762
Each (In a Pack of 10)
units
2.5mm Transistor - - 2 4 Through Hole Leaded 10.2 x 5.8 x 8.5mm 8.5mm 10.2mm +85°C -40°C 5.8mm
RS Stock No. 315-450
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
€14.29
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. 666-6577
Mfr. Part No.GP2Y0A710K0F
BrandSharp
€18.45
Each
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 170-2386
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
€10.723
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. 165-2675
Mfr. Part No.TCRT1000
BrandVishay
€0.534
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. 178-7429
Mfr. Part No.GP2Y0A710K0F
BrandSharp
€13.263
Each (In a Box of 500)
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 708-2737
Mfr. Part No.TCRT1000
BrandVishay
€1.246
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. 146-0745
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
€6.906
Each (In a Tray of 50)
units
80cm - - - - - Surface Mount - 37 x 13 x 21.6mm 21.6mm 37mm +60°C -10°C 13mm
RS Stock No. 708-5017
Mfr. Part No.TCRT5000
BrandVishay
€1.246
Each (In a Pack of 5)
units
2.5mm Phototransistor - - 1 - Through Hole PCB - 7mm 10.2mm + 85°C - 25°C -
RS Stock No. 146-0783
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
€9.32
Each
units
80cm - - - - - Surface Mount - 37 x 13 x 21.6mm 21.6mm 37mm +60°C -10°C 13mm
RS Stock No. 315-466
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
€9.32
Each
units
900mm Digital - - - 3 Surface Mount - 29.5 x 13 x 21.6mm 21.6mm 29.5mm +60°C -10°C 13mm
RS Stock No. 919-0001
Mfr. Part No.TCRT5000
BrandVishay
€0.762
Each (In a Tube of 50)
units
2.5mm - - - - - - - - - - - - -
RS Stock No. 414-197
Mfr. Part No.OPB720B-06Z
BrandOptek
€15.12
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. 915-4926
Mfr. Part No.SFH 9206-6/7
€0.955
Each (In a Pack of 10)
units
1 → 5mm Phototransistor 30µs 40µs - 6 Surface Mount - 4.2 x 3.4 x 2.1mm 2.1mm 4.2mm +100°C -40°C 3.4mm
RS Stock No. 778-1396
Mfr. Part No.SFH 9206
€1.34
Each (In a Pack of 5)
units
5mm Phototransistor 30µs 40µs 1 6 Surface Mount SMD 6.2 x 2.1 x 4.2mm 4.2mm 6.2mm +100°C -40°C 2.1mm
RS Stock No. 666-6564
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
€11.42
Each
units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 170-0732
Mfr. Part No.OPB720B-06Z
BrandOptek
€15.114
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