{"id":3544,"date":"2026-08-05T17:29:43","date_gmt":"2026-08-05T09:29:43","guid":{"rendered":"https:\/\/lasersensor.net\/?p=3544"},"modified":"2026-08-05T17:30:15","modified_gmt":"2026-08-05T09:30:15","slug":"class-1-vs-class-2-laser-distance-sensor","status":"publish","type":"post","link":"https:\/\/lasersensor.net\/ja\/class-1-vs-class-2-laser-distance-sensor\/","title":{"rendered":"What Is the Difference Between Class 1 and Class 2 Laser Distance Sensors?"},"content":{"rendered":"<h2 class=\"wp-block-heading\">What Is the Difference Between Class 1 and Class 2 Laser Distance Sensors?<\/h2><p>Laser distance sensors have become an essential technology in industrial automation, robotics, warehouse logistics, construction, surveying, intelligent transportation, and smart manufacturing. Their ability to provide fast, accurate, and non-contact distance measurement makes them a preferred solution for engineers and equipment manufacturers around the world. However, when selecting a laser distance sensor, one question often appears before comparing measuring range, accuracy, or interface options:<\/p><p><strong>Should you choose a Class 1 laser distance sensor or a Class 2 laser distance sensor?<\/strong><\/p><p>Understanding the difference between these two laser classifications is important because laser safety affects both equipment design and end-user operation. While both types can deliver excellent measurement performance, they are designed for different applications, operating environments, and safety requirements.<\/p><div class=\"wp-block-uagb-image uagb-block-63b16abe wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lasersensor.net\/wp-content\/uploads\/2026\/08\/What-Is-the-Difference-Between-Class-1-and-Class-2-Laser-Distance-Sensors.jpg\" alt=\"What Is the Difference Between Class 1 and Class 2 Laser Distance Sensors\" class=\"uag-image-3549\" width=\"800\" height=\"400\" title=\"What Is the Difference Between Class 1 and Class 2 Laser Distance Sensors\" role=\"img\" \/><\/figure><\/div><p>This guide explains how <strong><a href=\"https:\/\/lasersensor.net\/ja\/product-category\/laser-rangefinder-sensor-module\/\"><span style=\"color: #0693e3;\" class=\"stk-highlight\">Class 1 laser distance sensors<\/span><\/a><\/strong> \u305d\u3057\u3066 <strong><a href=\"https:\/\/lasersensor.net\/ja\/product-category\/laser-distance-sensor-module\/\"><span style=\"color: #0693e3;\" class=\"stk-highlight\">Class 2 laser distance sensors<\/span><\/a><\/strong> differ, how laser classifications are defined, and which option is best suited for your project.<\/p><h3 class=\"wp-block-heading\">Understanding Laser Classes<\/h3><p>Laser products are classified according to the international safety standard <strong>IEC 60825-1<\/strong>, which evaluates the potential hazards of laser radiation. The classification is based on factors including laser wavelength, output power, exposure duration, and the likelihood of eye injury.<\/p><p>For industrial distance measurement, the most common classifications are <strong>Class 1<\/strong> \u305d\u3057\u3066 <strong>\u30af\u30e9\u30b92<\/strong>.<\/p><p>Although these classifications focus on laser safety rather than measurement capability, they often influence product design, installation requirements, and application scenarios.<\/p><p>Choosing the correct laser class helps manufacturers comply with safety regulations while ensuring reliable performance in their target environment.<\/p><h3 class=\"wp-block-heading\">What Is a Class 1 Laser Distance Sensor?<\/h3><p>A <strong>Class 1 laser distance sensor<\/strong> is considered safe under normal operating conditions. The laser radiation emitted is below the Maximum Permissible Exposure (MPE), meaning users can operate the sensor without special eye protection during intended use.<\/p><div class=\"wp-block-uagb-image uagb-block-973ada1d wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lasersensor.net\/wp-content\/uploads\/2026\/08\/What-Is-a-Class-1-Laser-Distance-Sensor.jpg\" alt=\"What Is a Class 1 Laser Distance Sensor\" class=\"uag-image-3548\" width=\"800\" height=\"400\" title=\"What Is a Class 1 Laser Distance Sensor\" role=\"img\" \/><\/figure><\/div><p>Many Class 1 products achieve this safety level by using <a href=\"https:\/\/lasersensor.net\/ja\/product\/700m-laser-ranging-sensor-module\/\"><span style=\"color: #0693e3;\" class=\"stk-highlight\">infrared laser<\/span><\/a> wavelengths, optical design, beam expansion, or enclosed laser structures that limit accessible radiation.<\/p><h4 class=\"wp-block-heading\">Key Features of Class 1 Laser Distance Sensors<\/h4><ul class=\"wp-block-list\"><li>Eye-safe during normal operation<\/li>\n\n<li>Suitable for continuous industrial use<\/li>\n\n<li>Commonly use invisible infrared lasers such as 905 nm<\/li>\n\n<li>Ideal for automated equipment without operator intervention<\/li>\n\n<li>Meet strict international laser safety standards<\/li><\/ul><p>Because the laser beam is typically invisible, operators cannot see the measuring point directly. Instead, alignment is usually completed during equipment installation or with integrated aiming methods.<\/p><p>\u306b\u3064\u3044\u3066 <a href=\"https:\/\/lasersensor.net\/ja\/laser-triangulation-sensor-vs-laser-distance-sensor\/\"><span style=\"color: #0693e3;\" class=\"stk-highlight\">\u7523\u696d\u30aa\u30fc\u30c8\u30e1\u30fc\u30b7\u30e7\u30f3<\/span><\/a>, this is rarely a disadvantage since the sensor remains fixed after installation.<\/p><h3 class=\"wp-block-heading\">Typical Applications of Class 1 Laser Distance Sensors<\/h3><p>A <strong>Class 1 laser distance sensor<\/strong> is widely used in industrial environments where safety, reliability, and continuous operation are critical.<\/p><p>Typical applications include:<\/p><ul class=\"wp-block-list\"><li>\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30aa\u30fc\u30c8\u30e1\u30fc\u30b7\u30e7\u30f3<\/li>\n\n<li><a href=\"https:\/\/lasersensor.net\/ja\/agv-distance-sensor-for-accurate-navigation\/\"><span style=\"color: #0693e3;\" class=\"stk-highlight\">AGV and AMR navigation<\/span><\/a><\/li>\n\n<li>Robotic positioning<\/li>\n\n<li>Warehouse automation<\/li>\n\n<li>Crane positioning<\/li>\n\n<li>Elevator monitoring<\/li>\n\n<li><a href=\"https:\/\/lasersensor.net\/ja\/conveyor-position-sensor-improve-conveyor-position\/\"><span style=\"color: #0693e3;\" class=\"stk-highlight\">Conveyor control<\/span><\/a><\/li>\n\n<li>Smart logistics<\/li>\n\n<li>Building automation<\/li>\n\n<li>Structural monitoring<\/li><\/ul><p>In these environments, operators may work near the equipment throughout the day. Using a Class 1 device minimizes safety concerns while simplifying compliance with workplace regulations.<\/p><p>Many <a href=\"https:\/\/lasersensor.net\/ja\/laser-distance-sensors-about-us\/\"><strong><span style=\"color: #0693e3;\" class=\"stk-highlight\">OEM manufacturers<\/span><\/strong><\/a> also prefer Class 1 solutions because they reduce the complexity of machine certification.<\/p><h3 class=\"wp-block-heading\">What Is a Class 2 Laser Distance Sensor?<\/h3><p>A <strong>Class 2 laser distance sensor<\/strong> emits visible laser light, usually within the wavelength range of <strong>400\u2013700 nm<\/strong>. The output power is generally limited to <strong>1 mW or less<\/strong>.<\/p><p>Unlike Class 1 devices, Class 2 lasers rely on the human blink reflex for protection. When a person accidentally looks into the beam, the natural blink response typically limits exposure to a safe duration.<\/p><p>For this reason, brief accidental exposure is generally considered safe. However, users should never intentionally stare into a Class 2 laser beam.<\/p><p>One of the biggest advantages of a <strong>Class 2 laser distance sensor<\/strong> is visibility. Since the laser spot is clearly visible, engineers can easily align the sensor during installation and verify the measuring position without additional tools.<\/p><h3 class=\"wp-block-heading\">Advantages of Class 2 Laser Distance Sensors<\/h3><p>Many engineers choose a <strong>Class 2 laser distance sensor<\/strong> because of its ease of installation and operation.<\/p><p>Its major benefits include:<\/p><ul class=\"wp-block-list\"><li>Clearly visible measuring spot<\/li>\n\n<li>Easy alignment during installation<\/li>\n\n<li>Convenient maintenance<\/li>\n\n<li>Excellent for indoor positioning<\/li>\n\n<li>\u9ad8\u3044\u6e2c\u5b9a\u7cbe\u5ea6<\/li>\n\n<li>Simple commissioning process<\/li><\/ul><p>Because operators can instantly see where the laser is pointing, troubleshooting and system adjustment become much faster.<\/p><p>This is particularly valuable for prototype development, laboratory testing, and equipment commissioning.<\/p><h3 class=\"wp-block-heading\">Common Applications of Class 2 Laser Distance Sensors<\/h3><p>A <strong>Class 2 laser distance sensor<\/strong> is often selected for applications where users need to observe the measuring point directly.<\/p><p>Typical examples include:<\/p><ul class=\"wp-block-list\"><li>Indoor measurement systems<\/li>\n\n<li>Building inspection<\/li>\n\n<li>Civil engineering<\/li>\n\n<li>Architecture<\/li>\n\n<li>Laboratory equipment<\/li>\n\n<li>Educational demonstrations<\/li>\n\n<li>Quality inspection<\/li>\n\n<li>\u7cbe\u5bc6\u7d44\u7acb<\/li>\n\n<li>\u81ea\u52d5\u5316\u3055\u308c\u305f\u751f\u7523\u30e9\u30a4\u30f3<\/li>\n\n<li>Material positioning<\/li><\/ul><p>For indoor environments with trained personnel, the visible laser spot greatly improves operational efficiency.<\/p><h3 class=\"wp-block-heading\">Class 1 vs Class 2 Laser Distance Sensor: Key Differences<\/h3><p>Although both sensor types provide precise distance measurement, their differences extend beyond visibility.<\/p><div class=\"wp-block-uagb-image uagb-block-abc87455 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lasersensor.net\/wp-content\/uploads\/2026\/08\/Class-1-vs-Class-2-Laser-Distance-Sensor-Key-Differences.jpg\" alt=\"Class 1 vs Class 2 Laser Distance Sensor Key Differences\" class=\"uag-image-3547\" width=\"800\" height=\"533\" title=\"Class 1 vs Class 2 Laser Distance Sensor Key Differences\" role=\"img\" \/><\/figure><\/div><h4 class=\"wp-block-heading\">Laser Visibility<\/h4><p>The most noticeable difference is the laser beam itself.<\/p><p>A <strong>Class 1 laser distance sensor<\/strong> generally uses an invisible infrared laser, while a <strong>Class 2 laser distance sensor<\/strong> projects a visible red laser spot that allows users to identify the measuring location immediately.<\/p><h4 class=\"wp-block-heading\">\u76ee\u306e\u5b89\u5168<\/h4><p>A <strong>Class 1 laser distance sensor<\/strong> is designed to remain eye-safe during normal operation, making it suitable for continuous industrial environments.<\/p><p>A <strong>Class 2 laser distance sensor<\/strong> is also considered safe for accidental short-term exposure, but users should avoid intentional viewing of the laser beam.<\/p><h4 class=\"wp-block-heading\">Installation<\/h4><p>When installing industrial equipment, visible lasers often reduce setup time.<\/p><p>Engineers can align a <strong>Class 2 laser distance sensor<\/strong> within seconds because the measuring point is visible.<\/p><p>By comparison, installing a <strong>Class 1 laser distance sensor<\/strong> may require alignment tools or predefined mounting positions.<\/p><h4 class=\"wp-block-heading\">Industrial Applications<\/h4><p>Large-scale automation projects usually prioritize long-term operational safety.<\/p><p>As a result, many manufacturers integrate <strong>Class 1 laser distance sensors<\/strong> into OEM equipment, AGVs, robotic systems, and automated production lines.<\/p><p>Meanwhile, <strong>Class 2 laser distance sensors<\/strong> are widely adopted in engineering projects that require frequent adjustment or manual alignment.<\/p><h3 class=\"wp-block-heading\">Does Laser Class Affect Measurement Accuracy?<\/h3><p>One common misconception is that laser class determines measurement accuracy.<\/p><p>In reality, <strong><a href=\"https:\/\/lasersensor.net\/ja\/laser-measuring-sensor-selection-guide\/\"><span style=\"color: #0693e3;\" class=\"stk-highlight\">laser classification and measurement performance are independent characteristics<\/span><\/a><\/strong>.<\/p><p>A high-quality <strong>Class 1 laser distance sensor<\/strong> can achieve millimeter-level accuracy, just as a <strong>Class 2 laser distance sensor<\/strong> can provide highly precise distance measurements.<\/p><p>Accuracy depends on factors such as:<\/p><ul class=\"wp-block-list\"><li>Optical design<\/li>\n\n<li>Signal processing algorithms<\/li>\n\n<li>Detector quality<\/li>\n\n<li>Environmental conditions<\/li>\n\n<li>Target surface reflectivity<\/li>\n\n<li>Calibration methods<\/li><\/ul><p>Therefore, selecting between Class 1 and Class 2 should primarily be based on safety requirements, installation conditions, and application needs rather than expected accuracy alone.<\/p><p>For example, a warehouse automation system operating around the clock may prioritize the enhanced operational safety of a Class 1 device, while a laboratory test bench may benefit from the visible aiming capability of a <a href=\"https:\/\/lasersensor.net\/ja\/product\/ldl-t-laser-distance-measurement-module\/\"><span style=\"color: #0693e3;\" class=\"stk-highlight\">Class 2 sensor<\/span><\/a>. Understanding the operating environment helps engineers choose the most practical solution while maintaining reliable measurement performance and compliance with applicable safety standards.<\/p><p><\/p>","protected":false},"excerpt":{"rendered":"<p>What Is the Difference Between Class 1 and Class 2 Laser Distance Sensors? Laser distance sensors have become an essential technology in industrial automation, robotics, warehouse logistics, construction, surveying, intelligent 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Is the Difference Between Class 1 and Class 2 Laser Distance Sensors? Laser distance sensors have become an essential technology in industrial automation, robotics, warehouse logistics, construction, surveying, intelligent [&hellip;]","_links":{"self":[{"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/posts\/3544"}],"collection":[{"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/comments?post=3544"}],"version-history":[{"count":4,"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/posts\/3544\/revisions"}],"predecessor-version":[{"id":3551,"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/posts\/3544\/revisions\/3551"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/media\/3549"}],"wp:attachment":[{"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/media?parent=3544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/categories?post=3544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lasersensor.net\/ja\/wp-json\/wp\/v2\/tags?post=3544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}