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. 165-2675
Mfr. Part No.TCRT1000
BrandVishay
HK$4.358
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. 708-2737
Mfr. Part No.TCRT1000
BrandVishay
HK$11.30
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. 170-2820
Mfr. Part No.EE-SY1200
BrandOmron
HK$13.388
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. 788-4928
Mfr. Part No.EE-SY1200
BrandOmron
HK$28.75
Each (In a Pack of 2)
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. 862-9400
Mfr. Part No.QRE1113
HK$6.02
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. 178-7542
Mfr. Part No.QRE1113
HK$4.305
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. 894-7124
Mfr. Part No.SFH 7060
HK$23.978
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. 146-0745
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
HK$63.704
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. 146-0783
Mfr. Part No.GP2Y0D02YK0F
BrandSharp
HK$86.16
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
HK$86.16
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. 178-2947
Mfr. Part No.HSDL-9100-021
BrandBroadcom
HK$8.862
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
HK$19.404
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. 919-0001
Mfr. Part No.TCRT5000
BrandVishay
HK$6.605
Each (In a Tube of 50)
units
2.5mm - - - - - - - - - - - - -
RS Stock No. 785-7709
Mfr. Part No.TMD26711
Brandams
HK$12.295
Each (In a Pack of 2)
units
100mm Photodiode 20ns 20ns 1 8 Surface Mount Flat No Lead 3.94 x 2.36 x 1.35mm 1.35mm 3.94mm +85°C -30°C 2.36mm
RS Stock No. 178-7438
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
HK$49.865
Each (In a Tray of 1000)
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 170-0908
Mfr. Part No.TMD26711
Brandams
HK$11.456
Each (On a Reel of 2500)
units
100mm Photodiode 20ns 20ns 1 8 Surface Mount Flat No Lead 3.94 x 2.36 x 1.35mm 1.35mm 3.94mm +85°C -30°C 2.36mm
RS Stock No. 666-6568
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
HK$97.53
Each
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 708-5017
Mfr. Part No.TCRT5000
BrandVishay
HK$10.97
Each (In a Pack of 5)
units
2.5mm Phototransistor - - 1 - Through Hole PCB - 7mm 10.2mm + 85°C - 25°C -
RS Stock No. 170-2453
Mfr. Part No.GP2S60
BrandSharp
HK$2.52
Each (On a Reel of 2000)
units
0.7mm Phototransistor 20µs 20µs 1 4 Surface Mount SMD 3.2 x 1.7 x 1.1mm 1.1mm 3.2mm +85°C -25°C 1.7mm
RS Stock No. 773-0420
Mfr. Part No.VCNL4010-GS08
BrandVishay
HK$30.205
Each (In a Bag of 2)
units
200mm Microcontroller - - 1 13 Surface Mount - 3.95 x 3.95 x 0.75mm - - +85°C -25°C -