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Available in 22 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-22" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">22 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AD%D8%B3%D8%A7%D8%B3_%D8%A7%D9%84%D9%82%D8%B1%D8%A8" title="حساس القرب – Arabic" lang="ar" hreflang="ar" data-title="حساس القرب" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Yax%C4%B1nl%C4%B1q_sensoru" title="Yaxınlıq sensoru – Azerbaijani" lang="az" hreflang="az" data-title="Yaxınlıq sensoru" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%A8%E0%A7%88%E0%A6%95%E0%A6%9F%E0%A7%8D%E0%A6%AF-%E0%A6%B8%E0%A7%81%E0%A6%AC%E0%A7%87%E0%A6%A6%E0%A7%80_%E0%A6%97%E0%A7%8D%E0%A6%B0%E0%A6%BE%E0%A6%B9%E0%A6%95" title="নৈকট্য-সুবেদী গ্রাহক – Bangla" lang="bn" hreflang="bn" data-title="নৈকট্য-সুবেদী গ্রাহক" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Sensor_de_proximitat" title="Sensor de proximitat – Catalan" lang="ca" hreflang="ca" data-title="Sensor de proximitat" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/N%C3%A4herungsschalter" title="Näherungsschalter – German" lang="de" hreflang="de" data-title="Näherungsschalter" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Sensor_de_proximidad" title="Sensor de proximidad – Spanish" lang="es" hreflang="es" data-title="Sensor de proximidad" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AD%D8%B3%DA%AF%D8%B1_%D9%85%D8%AC%D8%A7%D9%88%D8%B1%D8%AA%DB%8C" title="حسگر مجاورتی – Persian" lang="fa" hreflang="fa" data-title="حسگر مجاورتی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Capteur_de_proximit%C3%A9" title="Capteur de proximité – French" lang="fr" hreflang="fr" data-title="Capteur de proximité" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EA%B7%BC%EC%A0%91_%EC%84%BC%EC%84%9C" title="근접 센서 – Korean" lang="ko" hreflang="ko" data-title="근접 센서" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Senzor_blizine" title="Senzor blizine – Croatian" lang="hr" hreflang="hr" data-title="Senzor blizine" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Sensor_proksimitas" title="Sensor proksimitas – Indonesian" lang="id" hreflang="id" data-title="Sensor proksimitas" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Sensore_di_prossimit%C3%A0" title="Sensore di prossimità – Italian" lang="it" hreflang="it" data-title="Sensore di prossimità" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Artumo_jutiklis" title="Artumo jutiklis – Lithuanian" lang="lt" hreflang="lt" data-title="Artumo jutiklis" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Afstandssensor" title="Afstandssensor – Dutch" lang="nl" hreflang="nl" data-title="Afstandssensor" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Czujnik_zbli%C5%BCeniowy" title="Czujnik zbliżeniowy – Polish" lang="pl" hreflang="pl" data-title="Czujnik zbliżeniowy" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Sensor_de_proximidade" title="Sensor de proximidade – Portuguese" lang="pt" hreflang="pt" data-title="Sensor de proximidade" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%91%D0%B5%D1%81%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%BD%D1%8B%D0%B9_%D0%B4%D0%B0%D1%82%D1%87%D0%B8%D0%BA" title="Бесконтактный датчик – Russian" lang="ru" hreflang="ru" data-title="Бесконтактный датчик" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Senzor_blizine" title="Senzor blizine – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Senzor blizine" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%95%E0%B8%B1%E0%B8%A7%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%A3%E0%B8%B9%E0%B9%89%E0%B8%AA%E0%B8%B4%E0%B9%88%E0%B8%87%E0%B9%83%E0%B8%81%E0%B8%A5%E0%B9%89%E0%B9%80%E0%B8%84%E0%B8%B5%E0%B8%A2%E0%B8%87" title="ตัวรับรู้สิ่งใกล้เคียง – Thai" lang="th" hreflang="th" data-title="ตัวรับรู้สิ่งใกล้เคียง" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%91%D0%B5%D0%B7%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%BD%D0%B8%D0%B9_%D0%B4%D0%B0%D1%82%D1%87%D0%B8%D0%BA" title="Безконтактний датчик – Ukrainian" lang="uk" hreflang="uk" data-title="Безконтактний датчик" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%BE%D8%B1%D8%A7%DA%A9%D8%B3%DB%8C%D9%85%DB%8C%D9%B9%DB%8C_%D8%B3%D9%86%D8%B3%D8%B1" title="پراکسیمیٹی سنسر – Urdu" lang="ur" hreflang="ur" data-title="پراکسیمیٹی سنسر" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%8E%A5%E8%BF%91%E4%BC%A0%E6%84%9F%E5%99%A8" title="接近传感器 – Chinese" lang="zh" hreflang="zh" data-title="接近传感器" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a 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If possible, verify the text with references provided in the foreign-language article.</li> <li>You <b>must</b> provide <a href="/wiki/Wikipedia:Copying_within_Wikipedia" title="Wikipedia:Copying within Wikipedia">copyright attribution</a> in the <a href="/wiki/Help:Edit_summary" title="Help:Edit summary">edit summary</a> accompanying your translation by providing an <a href="/wiki/Help:Interlanguage_links" title="Help:Interlanguage links">interlanguage link</a> to the source of your translation. A model attribution edit summary is <code>Content in this edit is translated from the existing French Wikipedia article at [[:fr:Capteur de proximité]]; see its history for attribution.</code></li> <li>You may also add the template <code>{{Translated|fr|Capteur de proximité}}</code> to the <a href="/wiki/Talk:Proximity_sensor" title="Talk:Proximity sensor">talk page</a>.</li> <li>For more guidance, see <a href="/wiki/Wikipedia:Translation" title="Wikipedia:Translation">Wikipedia:Translation</a>.</li></ul></div></div></div></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sharp_GP2Y0A21YK_IR_proximity_sensor_cropped.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/27/Sharp_GP2Y0A21YK_IR_proximity_sensor_cropped.jpg/250px-Sharp_GP2Y0A21YK_IR_proximity_sensor_cropped.jpg" decoding="async" width="220" height="109" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/27/Sharp_GP2Y0A21YK_IR_proximity_sensor_cropped.jpg/330px-Sharp_GP2Y0A21YK_IR_proximity_sensor_cropped.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/27/Sharp_GP2Y0A21YK_IR_proximity_sensor_cropped.jpg/500px-Sharp_GP2Y0A21YK_IR_proximity_sensor_cropped.jpg 2x" data-file-width="1828" data-file-height="904" /></a><figcaption>An infrared proximity sensor</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Smartphone_proximity_sensor_2.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Smartphone_proximity_sensor_2.jpg/250px-Smartphone_proximity_sensor_2.jpg" decoding="async" width="220" height="155" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Smartphone_proximity_sensor_2.jpg/330px-Smartphone_proximity_sensor_2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/15/Smartphone_proximity_sensor_2.jpg/500px-Smartphone_proximity_sensor_2.jpg 2x" data-file-width="699" data-file-height="491" /></a><figcaption>Optical proximity sensor in a 2016 <a href="/wiki/Samsung" title="Samsung">Samsung</a> <a href="/wiki/Smartphone" title="Smartphone">smartphone</a>. A proximity sensor is a standard feature of most smartphones, disabling the touchscreen when positioned near an ear during phone calls; more recent (late 2019-early 2020) smartphones with OLED displays may have the sensor mounted under the display.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Smartphone_proximity_sensor.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Smartphone_proximity_sensor.jpg/250px-Smartphone_proximity_sensor.jpg" decoding="async" width="220" height="227" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Smartphone_proximity_sensor.jpg/330px-Smartphone_proximity_sensor.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Smartphone_proximity_sensor.jpg/500px-Smartphone_proximity_sensor.jpg 2x" data-file-width="537" data-file-height="553" /></a><figcaption>Smartphone optical proximity sensor without the phone's casing. The sensor itself is the black object on top of the yellow block below it; this block is actually a <a href="/wiki/Printed_circuit_board" title="Printed circuit board">printed circuit board</a> serving as an <a href="/wiki/Interposer" title="Interposer">interposer</a>. </figcaption></figure> <p>A <b>proximity sensor</b> (often simply <b>prox</b>) is a <a href="/wiki/Sensor" title="Sensor">sensor</a> able to detect the presence of nearby objects without any physical contact. </p><p>A proximity sensor often emits an <a href="/wiki/Electromagnetic_field" title="Electromagnetic field">electromagnetic</a> field or a beam of <a href="/wiki/Electromagnetic_radiation" title="Electromagnetic radiation">electromagnetic radiation</a> (<a href="/wiki/Infrared" title="Infrared">infrared</a>, for instance), and looks for changes in the <a href="/wiki/Electric_field" title="Electric field">field</a> or return <a href="/wiki/Signal" title="Signal">signal</a>. The object being sensed is often referred to as the proximity sensor's target. Different proximity sensor targets demand different sensors. For example, a <a href="/wiki/Capacitive_proximity_sensor" class="mw-redirect" title="Capacitive proximity sensor">capacitive proximity sensor</a> or <a href="/wiki/Photoelectric_sensor" title="Photoelectric sensor">photoelectric sensor</a> might be suitable for a plastic target; an <a href="/wiki/Inductive_sensor" title="Inductive sensor">inductive proximity sensor</a> always requires a metal target.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (October 2018)">citation needed</span></a></i>]</sup> </p><p>Proximity sensors can have a high reliability and long functional life because of the absence of mechanical parts and lack of physical contact between the sensor and the sensed object. </p><p>Proximity sensors are also used in machine vibration monitoring to measure the variation in distance between a shaft and its support bearing. This is common in large steam <a href="/wiki/Turbine" title="Turbine">turbines</a>, <a href="/wiki/Gas_compressor" class="mw-redirect" title="Gas compressor">compressors</a>, and motors that use sleeve-type <a href="/wiki/Bearing_(mechanical)" title="Bearing (mechanical)">bearings</a>. </p><p>A proximity sensor adjusted to a very short range is often used as a <a href="/wiki/Touch_switch" title="Touch switch">touch switch</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Use_with_smartphones_and_tablet_computers">Use with smartphones and tablet computers</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Proximity_sensor&action=edit&section=1" title="Edit section: Use with smartphones and tablet computers"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Proximity sensors are commonly used on <a href="/wiki/Mobile_device" title="Mobile device">mobile devices</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> When the target is within nominal range, the device <a href="/wiki/Lock_screen" title="Lock screen">lock screen</a> user interface will appear, thus emerging from what is known as <a href="/wiki/Sleep_mode" title="Sleep mode">sleep mode</a>. Once the <a href="/wiki/Machine" title="Machine">device</a> has awoken from sleep mode, if the proximity sensor's target is still for an extended period of time, the sensor will then ignore it, and the device will eventually revert into sleep mode. For example, during a <a href="/wiki/Telephone_call" title="Telephone call">telephone call</a>, proximity sensors play a role in detecting (and skipping) accidental touchscreen taps when mobiles are held to the ear.<sup id="cite_ref-Proximity_sensor_on_Android_smartphones_2-0" class="reference"><a href="#cite_note-Proximity_sensor_on_Android_smartphones-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Proximity <a href="/wiki/Sensor" title="Sensor">sensors</a> can be used to recognise air gestures and hover-manipulations. An array of proximity sensing elements can replace <a href="/wiki/Vision_camera" class="mw-redirect" title="Vision camera">vision-camera</a> or <a href="/wiki/Depth_camera" class="mw-redirect" title="Depth camera">depth camera</a> based solutions for <a href="/wiki/Gesture_recognition" title="Gesture recognition">hand gesture detection</a>. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:BlackBerry_Leap-sensores_array_infrared_proximity-dark_red_PNr%C2%B00725.jpg" class="mw-file-description" title="The pulsing proximity sensor of a BlackBerry Leap"><img alt="The pulsing proximity sensor of a BlackBerry Leap" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/BlackBerry_Leap-sensores_array_infrared_proximity-dark_red_PNr%C2%B00725.jpg/120px-BlackBerry_Leap-sensores_array_infrared_proximity-dark_red_PNr%C2%B00725.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/BlackBerry_Leap-sensores_array_infrared_proximity-dark_red_PNr%C2%B00725.jpg/180px-BlackBerry_Leap-sensores_array_infrared_proximity-dark_red_PNr%C2%B00725.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5d/BlackBerry_Leap-sensores_array_infrared_proximity-dark_red_PNr%C2%B00725.jpg/240px-BlackBerry_Leap-sensores_array_infrared_proximity-dark_red_PNr%C2%B00725.jpg 2x" data-file-width="2750" data-file-height="2750" /></a></span></div> <div class="gallerytext">The pulsing proximity sensor of a <a href="/wiki/BlackBerry_Leap" title="BlackBerry Leap">BlackBerry Leap</a></div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><span><video id="mwe_player_0" poster="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm/120px--BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm.jpg" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="120" height="68" data-durationhint="31" data-mwtitle="BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr°0004.webm" data-mwprovider="wikimediacommons"><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm.480p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="480p.vp9.webm" data-width="854" data-height="480" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm.720p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="720p.vp9.webm" data-width="1280" data-height="720" /><source src="//upload.wikimedia.org/wikipedia/commons/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm" type="video/webm; codecs="vp9"" data-width="1920" data-height="1080" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm.1080p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="1080p.vp9.webm" data-width="1920" data-height="1080" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm.144p.mjpeg.mov" type="video/quicktime" data-transcodekey="144p.mjpeg.mov" data-width="256" data-height="144" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm.240p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="240p.vp9.webm" data-width="426" data-height="240" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm.360p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="360p.vp9.webm" data-width="640" data-height="360" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm/BlackBerry_Leap-sensores_array_infrared_proximity-I6400_VNr%C2%B00004.webm.360p.webm" type="video/webm; codecs="vp8, vorbis"" data-transcodekey="360p.webm" data-width="640" data-height="360" /></video></span></span></div> <div class="gallerytext">Video of the pulsing proximity sensor of a BlackBerry Leap</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="Types_of_sensors">Types of sensors</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Proximity_sensor&action=edit&section=2" title="Edit section: Types of sensors"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Capacitive_sensing" title="Capacitive sensing">Capacitive</a></li> <li><a href="/wiki/Capacitive_displacement_sensor" title="Capacitive displacement sensor">Capacitive displacement sensor</a></li> <li><a href="/wiki/Doppler_effect" title="Doppler effect">Doppler effect</a> (sensor based on <a href="/wiki/Doppler_effect" title="Doppler effect">doppler effect</a>)</li> <li><a href="/wiki/Inductive_sensor" title="Inductive sensor">Inductive</a></li> <li><a href="/wiki/Magnetic" class="mw-redirect" title="Magnetic">Magnetic</a>, including <a href="/wiki/Magnetic_proximity_fuse" class="mw-redirect" title="Magnetic proximity fuse">magnetic proximity fuse</a></li> <li>Optical <ul><li><a href="/wiki/Photoelectric_sensor" title="Photoelectric sensor">Photoelectric</a></li> <li><a href="/wiki/Photocell" class="mw-redirect" title="Photocell">Photocell</a> (reflective)</li> <li><a href="/wiki/Laser_rangefinder" title="Laser rangefinder">Laser rangefinder</a></li> <li>Passive (such as <a href="/wiki/Charge-coupled_device" title="Charge-coupled device">charge-coupled devices</a>)</li> <li>Passive thermal <a href="/wiki/Infrared" title="Infrared">infrared</a></li></ul></li> <li><a href="/wiki/Radar" title="Radar">Radar</a></li> <li>Reflection of ionizing radiation</li> <li><a href="/wiki/Sonar" title="Sonar">Sonar</a> (typically active or passive)</li> <li><a href="/wiki/Ultrasonic_sensor" class="mw-redirect" title="Ultrasonic sensor">Ultrasonic sensor</a></li> <li><a href="/wiki/Optical_fiber" title="Optical fiber">Fiber optics</a> sensor</li> <li><a href="/wiki/Hall_effect_sensor" title="Hall effect sensor">Hall effect sensor</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Applications">Applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Proximity_sensor&action=edit&section=3" title="Edit section: Applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Proximity_sensor_on_iPhone_5_front.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/12/Proximity_sensor_on_iPhone_5_front.png/250px-Proximity_sensor_on_iPhone_5_front.png" decoding="async" width="220" height="98" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/12/Proximity_sensor_on_iPhone_5_front.png/330px-Proximity_sensor_on_iPhone_5_front.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/12/Proximity_sensor_on_iPhone_5_front.png/500px-Proximity_sensor_on_iPhone_5_front.png 2x" data-file-width="4596" data-file-height="2048" /></a><figcaption>Proximity sensor installed on the front of an iPhone 5 next to the earpiece automatically turning off the touchscreen when the sensor comes within a predefined range of an object (such as a human ear) when using the handset</figcaption></figure> <ul><li><a href="/wiki/Parking_sensors" class="mw-redirect" title="Parking sensors">Parking sensors</a>, systems mounted on car bumpers that sense distance to nearby cars for parking</li> <li><a href="/wiki/Inductive_sensor" title="Inductive sensor">Inductive sensors</a></li> <li><a href="/wiki/Ground_proximity_warning_system" title="Ground proximity warning system">Ground proximity warning system</a> for aviation safety</li> <li>Vibration measurements of rotating shafts in machinery<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (October 2018)">citation needed</span></a></i>]</sup></li> <li>Top <a href="/wiki/Dead_centre_(engineering)" title="Dead centre (engineering)">dead centre</a> (TDC)/<a href="/wiki/Camshaft" title="Camshaft">camshaft</a> sensor in <a href="/wiki/Reciprocating_engine" title="Reciprocating engine">reciprocating engines</a>.</li> <li>Sheet break sensing in paper machine.</li> <li><a href="/wiki/Anti-aircraft_warfare" title="Anti-aircraft warfare">Anti-aircraft warfare</a></li> <li><a href="/wiki/Roller_coaster" title="Roller coaster">Roller coasters</a></li> <li><a href="/wiki/Conveyor_system" title="Conveyor system">Conveyor systems</a></li> <li><a href="/wiki/Bottling_line" title="Bottling line">Beverage</a> and <a href="/wiki/Canning" title="Canning">food can</a> making lines</li> <li><a href="/wiki/Mobile_device" title="Mobile device">Mobile devices</a> <ul><li><a href="/wiki/Touch_screen" class="mw-redirect" title="Touch screen">Touch screens</a> that come in close proximity to the face<sup id="cite_ref-Proximity_sensor_on_Android_smartphones_2-1" class="reference"><a href="#cite_note-Proximity_sensor_on_Android_smartphones-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>Attenuating radio power in close proximity to the body, in order to reduce <a href="/wiki/Mobile_phone_radiation_and_health" class="mw-redirect" title="Mobile phone radiation and health">radiation exposure</a><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></li></ul></li> <li><a href="/wiki/Automatic_faucet" title="Automatic faucet">Automatic faucets</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Proximity_sensor&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Motion_detector" title="Motion detector">Motion detector</a></li> <li><a href="/wiki/Occupancy_sensor" title="Occupancy sensor">Occupancy sensor</a></li> <li><a href="/wiki/Range_imaging" title="Range imaging">Range imaging</a></li> <li><a href="/wiki/Time_of_flight_detector" class="mw-redirect" title="Time of flight detector">Time of flight detector</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Proximity_sensor&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and 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