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. 919-0001
Mfr. Part No.TCRT5000
BrandVishay
TWD30.00
Each (In a Tube of 50)
units
2.5mm - - - - - - - - - - - - -
RS Stock No. 708-5017
Mfr. Part No.TCRT5000
BrandVishay
TWD46.20
Each (In a Pack of 5)
units
2.5mm Phototransistor - - 1 - Through Hole PCB - 7mm 10.2mm + 85°C - 25°C -
RS Stock No. 919-0082
Mfr. Part No.CNY70
BrandVishay
TWD27.90
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. 708-5348
Mfr. Part No.CNY70
BrandVishay
TWD45.40
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. 165-2675
Mfr. Part No.TCRT1000
BrandVishay
TWD16.50
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
TWD42.60
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. 919-1001
Mfr. Part No.VCNL4010-GS08
BrandVishay
TWD46.90
Each (On a Reel of 1800)
units
200mm Microcontroller - - 1 13 Surface Mount - 3.95 x 3.95 x 0.75mm - - +85°C -25°C -
RS Stock No. 773-0420
Mfr. Part No.VCNL4010-GS08
BrandVishay
TWD104.00
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 -
RS Stock No. 165-7087
Mfr. Part No.TCND5000
BrandVishay
TWD38.00
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. 818-7521
Mfr. Part No.TCRT1010
BrandVishay
TWD25.30
Each (In a Pack of 10)
units
1mm Transistor - - 2 4 Through Hole Leaded 7 x 2.5 x 4mm 4mm 7mm +85°C -25°C 2.5mm
RS Stock No. 818-7524
Mfr. Part No.TCRT5000L
BrandVishay
TWD27.00
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. 161-2050
Mfr. Part No.VCNT2020
BrandVishay
TWD14.10
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. 145-1738
Mfr. Part No.TCRT5000L
BrandVishay
TWD24.90
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. 161-2156
Mfr. Part No.VCNT2020
BrandVishay
TWD17.00
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. 773-3993
Mfr. Part No.TCND5000
BrandVishay
TWD95.00
Each
units
6mm Photodiode 800ns 800ns 1 4 Surface Mount - 6 x 3.7 x 3.75mm - - +85°C -40°C -
RS Stock No. 165-6261
Mfr. Part No.TCRT1010
BrandVishay
TWD17.20
Each (In a Bag of 1000)
units
1mm Transistor - - 2 4 Through Hole Leaded 7 x 2.5 x 4mm 4mm 7mm +85°C -25°C 2.5mm