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    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.

    109 產品顯示為 Reflective Optical Sensors

    个(每托盘 5 )
    HK$7.94
    Vishay
    2.5mm
    Phototransistor
    -
    -
    1
    -
    Through Hole
    PCB
    -
    7mm
    10.2mm
    + 85°C
    - 25°C
    -
    -
    • RS庫存編號 315-450
    • 製造零件編號 GP2Y0A02YK0F
    HK$109.20
    Sharp
    1500mm
    -
    -
    -
    -
    3
    Screw Mount
    -
    44.5 x 18.9 x 21.6mm
    21.6mm
    44.5mm
    +60°C
    -10°C
    -
    18.9mm
    • RS庫存編號 237-9896
    • 製造零件編號 EE-SY1201
    HK$24.40
    Omron
    3mm
    Phototransistor
    20µs
    20µs
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    HK$67.20
    Optek
    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
    • RS庫存編號 666-6564
    • 製造零件編號 GP2Y0A21YK0F
    HK$88.60
    Sharp
    800mm
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    +60°C
    -10°C
    -
    -
    • RS庫存編號 919-0001
    • 製造零件編號 TCRT5000
    毎管:50 个
    HK$7.32
    Vishay
    2.5mm
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 667-5041
    • 製造零件編號 GP2S60
    个(每托盘 5 )
    HK$6.44
    Sharp
    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庫存編號 414-197
    • 製造零件編號 OPB720B-06Z
    HK$150.80
    Optek
    152mm
    Open Collector
    -
    -
    1
    3
    -
    -
    17.15 x 8.38 x 27.94mm
    27.94mm
    17.15mm
    +70°C
    0°C
    -
    8.38mm
    • RS庫存編號 315-466
    • 製造零件編號 GP2Y0D02YK0F
    HK$62.20
    Sharp
    900mm
    Digital
    -
    -
    -
    3
    Surface Mount
    -
    29.5 x 13 x 21.6mm
    21.6mm
    29.5mm
    +60°C
    -10°C
    -
    13mm
    HK$9.944
    Vishay
    3mm
    Phototransistor
    9000ns
    16000ns
    2
    -
    Surface Mount
    SMD
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 761-3984
    • 製造零件編號 QRE1113GR
    个(每托盘 5 )
    HK$4.96
    onsemi
    -
    Phototransistor
    20µs
    20µs
    1
    4
    Surface Mount
    SMD
    3.6 x 2.9 x 1.7mm
    1.7mm
    3.6mm
    +85°C
    -40°C
    -
    2.9mm
    • RS庫存編號 666-6568
    • 製造零件編號 GP2Y0A41SK0F
    HK$65.40
    Sharp
    300mm
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    +60°C
    -10°C
    -
    -
    • RS庫存編號 414-181
    • 製造零件編號 OPB720B-30VZ
    HK$258.30
    Optek
    762mm
    Open Collector
    -
    -
    1
    3
    -
    -
    17.15 x 8.38 x 27.94mm
    27.94mm
    17.15mm
    +70°C
    0°C
    -
    8.38mm
    HK$29.30
    Optek
    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庫存編號 146-0725
    • 製造零件編號 GP2A25J0000F
    个 (以毎袋:100)
    HK$32.556
    Sharp
    27 (Non-Detection) mm, 9 (Detection) mm
    Photointerrupter
    -
    -
    -
    -
    Surface Mount
    -
    39.8 x 9 x 8.65mm
    8.65mm
    39.8mm
    +60°C
    -10°C
    Analogue
    9mm
    • RS庫存編號 146-0735
    • 製造零件編號 GP2A210LCSJF
    个 (以毎袋:100)
    HK$97.798
    Sharp
    15 (Detection) mm, 70 (Non-Detection) mm
    Photointerrupter
    -
    -
    -
    -
    Surface Mount
    -
    39.8 x 9 x 8.65mm
    8.65mm
    39.8mm
    +70°C
    -10°C
    Analogue
    9mm
    个 (以毎袋:25)
    HK$31.108
    Optek
    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庫存編號 170-9658
    • 製造零件編號 SFH 9206-6/7
    个(每带 1000 )
    HK$5.045
    ams OSRAM
    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庫存編號 178-7438
    • 製造零件編號 GP2Y0A41SK0F
    个(每套 1000)
    HK$52.262
    Sharp
    300mm
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    +60°C
    -10°C
    -
    -
    • RS庫存編號 274-2765
    • 製造零件編號 VCNT2030
    个(每托盘 5 )
    HK$12.74
    Vishay
    0.9mm
    Transistor
    10µs
    15µs
    1
    -
    Surface Mount
    SMD
    -
    -
    -
    -
    -
    -
    -
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