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    Photoelectric Sensors

    光感應器(又稱光電感測器)是一種用來偵測物體距離的儀器,它透過發射和接收電磁輻射,從而偵測物體的距離。感應器設有一個發射器和一個接收器,當光束經過物體時會被打斷,這樣就可以精準地探測物體是否存在,或距離是什麼。

    光電感測器的原理

    光電感測器的運作原理是「光電效應」,能將光信號轉換為電信號;當光照射在某些物質上時,物質的電學性質便會發生變化,從而偵測出物質的存在(及距離),然後作出相應的指示。例如,自動門上的光電感測器,當有人靠近時,感測器會「看見」光線的變化,產生電流信號,從而控制門自動打開。

    光電感測器的種類

    光電感測器主要可分為三個種類:

    • 穿透式:發射器和接收器分別置於兩側,物體經過時會打斷光束的傳送,從而觸發信號。適用於遠距離感應、不會受物體的顏色或形狀而影響準確性。
    • 反射式:發射器和接收器都在同一個外殼,但在另一側需要有反射板來反射光線。與一般光感應器一樣,當光線經過物體時會被打斷,從而觸發信號。適用於測量反射性物體。
    • 漫反射式:發射器和接收器於同一外殼。發射光束照射物體後會被漫反射回接收器,從而感應到物體。安裝較簡單。

    除了以上三種基本類型外,還有一些特殊型號的光電感應器,例如具有「背景抑制式」功能,可以無視周遭的背景環境干擾,提高檢測的準確性。

    光電感測器的用途

    光電感測器的應用廣泛,在不同領域也發揮着重要作用,例如:

    • 食品工業
    • 製藥業
    • 包裝廠
    • 汽車工業
    • 門禁系統

    光電感測器的品牌推薦

    RS 歐時網羅世界各地的優質光電感測器,精選品牌包括SickOmronBannerTelemecanique SensorsRS PRO等,深受香港用家推薦。除了光電感測器外,我們亦提供對射型光電感測器可供選購。如你對產品規格或價錢有任何疑問,或需要尋求技術協助,歡迎隨時與我們聯絡。

    即日訂購,最快次日發貨,網上落單滿額即享免運費!

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    Electrical Connection
    Switching Mode
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    Light Source
    IP Rating
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    產品詳述
    單價
    Brand
    Sensor Style
    Detection Type
    Detection Range
    Output Type
    Electrical Connection
    Switching Mode
    Maximum AC Voltage
    Communication Protocol
    Maximum DC Voltage
    Terminal Type
    Light Source
    IP Rating
    Maximum Current
    Interface
    Response Time
    Hazardous Area Certification
    Housing Material
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    Carlo Gavazzi
    Block
    -
    -
    2 NPN, Relay
    -
    -
    24V
    -
    24V
    -
    LED
    IP20
    -
    -
    20 ms, 30 ms
    -
    NORYL SE1
    +50°C
    -20°C
    -
    -
    Carlo Gavazzi
    Rectangular
    Polarized Retro Reflective
    6000 mm
    PNP/NPN
    Connector M8
    Light / Dark switching
    -
    IO-LINK
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Barrel
    Through Beam
    20 m
    NPN/PNP
    Cable
    -
    -
    -
    3V
    -
    LED
    IP66, IP67
    15 mA
    -
    -
    -
    PC
    +60°C
    -20°C
    -
    -
    Carlo Gavazzi
    Rectangular
    Through Beam
    20000 mm
    SPDT
    Cable
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Rectangular
    Through Beam
    15000 mm
    PNP
    Cable
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Rectangular
    Diffuse Reflective
    0 → 200 mm
    PNP
    Connector M8
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Rectangular
    Retroreflective
    10000 mm
    Relay
    Screw Connection
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Barrel
    Diffuse
    400 mm
    Relay
    Cable
    -
    250V
    -
    -
    -
    LED
    IP67
    10 mA
    -
    =20 ms
    -
    PBTP
    +60°C
    -20°C
    -
    -
    Carlo Gavazzi
    Barrel
    Retroreflective
    3000 mm
    Two Wire
    Connector M12
    Dark Switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Barrel
    Retroreflective
    3 m
    PNP
    Cable
    -
    -
    -
    40V
    -
    LED
    IP67
    20 mA
    -
    <3.2 ms
    -
    Metal
    +60°C
    -20°C
    -
    -
    Carlo Gavazzi
    Block
    Polarized Retro Reflective
    3000 mm
    NPN
    Connector M12
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Block
    Retroreflective
    12 m
    -
    5 Terminal Screw
    -
    240V
    -
    240V
    Cable
    LED
    IP67
    -
    -
    =20 ms
    -
    ABS, PC
    +55°C
    -25°C
    -
    -
    Carlo Gavazzi
    Rectangular
    Diffuse Reflective
    0 → 200 mm
    NPN
    Connector M8
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Block
    Through Beam
    20 m
    -
    Cable
    -
    240V
    -
    -
    -
    LED
    IP67
    -
    -
    ≤25 ms
    -
    ABS, PC
    +60°C
    -20°C
    -
    -
    Carlo Gavazzi
    Rectangular
    Retroreflective
    10000 mm
    Relay
    Screw Connection
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Miniature
    Through Beam
    20 m
    PNP NO/NC
    M12 4 Pin Connector
    -
    -
    -
    30V
    M12 Connector
    -
    IP67, IP69K
    25 mA
    -
    <1 ms
    -
    ABS
    +60°C
    -25°C
    -
    PH18
    Carlo Gavazzi
    -
    -
    -
    PNP
    -
    -
    -
    -
    -
    -
    Infrared
    IP67
    -
    -
    -
    -
    Polysulfone
    -
    -
    -
    -
    Carlo Gavazzi
    Rectangular
    Polarized Retro Reflective
    12000 mm
    SPDT
    Screw Connection
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Cylindrical
    Through Beam
    15000 mm
    PNP
    Cable
    Dark Switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Carlo Gavazzi
    Rectangular
    Retroreflective
    6000 mm
    PNP
    Connector M8
    Light / Dark switching
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
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