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. 666-6564
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
SGD18.78
Each
units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 178-7437
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
SGD10.07
Each (In a Box of 1000)
units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 315-450
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
SGD22.14
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. 170-2386
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
SGD17.776
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. 894-7124
Mfr. Part No.SFH 7060
SGD3.916
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. 773-3993
Mfr. Part No.TCND5000
BrandVishay
SGD4.04
Each
units
6mm Photodiode 800ns 800ns 1 4 Surface Mount - 6 x 3.7 x 3.75mm - - +85°C -40°C -
RS Stock No. 165-7087
Mfr. Part No.TCND5000
BrandVishay
SGD1.785
Each (On a Reel of 2000)
units
6mm Photodiode 800ns 800ns 1 4 Surface Mount - 6 x 3.7 x 3.75mm - - +85°C -40°C -
RS Stock No. 708-5017
Mfr. Part No.TCRT5000
BrandVishay
SGD2.506
Each (In a Pack of 5)
units
2.5mm Phototransistor - - 1 - Through Hole PCB - 7mm 10.2mm + 85°C - 25°C -
RS Stock No. 919-0001
Mfr. Part No.TCRT5000
BrandVishay
SGD1.145
Each (In a Tube of 50)
units
2.5mm - - - - - - - - - - - - -
RS Stock No. 146-0783
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
SGD15.43
Each
units
80cm - - - - - Surface Mount - 37 x 13 x 21.6mm 21.6mm 37mm +60°C -10°C 13mm
RS Stock No. 666-6568
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
SGD16.07
Each
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 178-7438
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
SGD8.621
Each (In a Tray of 1000)
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 146-0745
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
SGD11.015
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. 315-466
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
SGD14.90
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. 455-0931
Mfr. Part No.OPB702
BrandOptek
SGD4.59
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. 170-0777
Mfr. Part No.OPB702
BrandOptek
SGD4.494
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. 708-5348
Mfr. Part No.CNY70
BrandVishay
SGD2.08
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
SGD1.239
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. 818-7524
Mfr. Part No.TCRT5000L
BrandVishay
SGD1.145
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. 642-4323
Mfr. Part No.OPB350W250Z
BrandOptek
SGD11.10
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