{"id":21489,"date":"2026-07-15T18:43:39","date_gmt":"2026-07-15T16:43:39","guid":{"rendered":"https:\/\/roder.it\/uncategorized-en-us\/non-contact-speed-and-length-measurement-with-optical-instruments\/"},"modified":"2026-09-25T19:26:17","modified_gmt":"2026-09-25T17:26:17","slug":"non-contact-speed-and-length-measurement-with-optical-instruments","status":"publish","type":"post","link":"https:\/\/roder.it\/en\/uncategorized-en-us\/non-contact-speed-and-length-measurement-with-optical-instruments\/","title":{"rendered":"Non-contact speed and length measurement with optical instruments"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Optical speed sensors are an essential instrument for measuring speed and length on the production line. <\/p>\n<!-- \/wp:paragraph --\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover is-light popmake-11245\" style=\"border-width:1px;border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-left-radius:10px;border-bottom-right-radius:10px;min-height:250px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"213\" class=\"wp-block-cover__image-background wp-image-14896 size-large\" alt=\"banner aiuto nella scelta dello strumento oppure della tecnologia\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png\" data-object-fit=\"cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png 1024w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-300x63.png 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-768x160.png 768w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#d3d6dc\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-a304f9a9 wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-right has-ti-fg-color has-text-color has-link-color wp-elements-1 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.726), 35px);\"><strong>Would you like help choosing the right product ?<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-b507c051 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/roder.it\/en\/contacts\/\">Click here !<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Related products<\/h3>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-medium is-resized has-custom-border\"><a href=\"https:\/\/roder.it\/en\/products\/optical-encoder-speed-meters\/\"><img decoding=\"async\" class=\"has-border-color\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_nastro_continuo_tappeti_continui-web_image-300x300-1.webp\" alt=\"Go to the optical encoder speed sensor catalog\" style=\"border-color:#000000;border-width:1px;border-radius:12px;object-fit:cover;width:180px;height:180px\"\/><\/a><\/figure>\n<\/div>\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<p class=\"wp-block-paragraph\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\"><strong><a href=\"https:\/\/roder.it\/en\/products\/optical-encoder-speed-meters\/\">\u2192 Go to the optical encoder speed sensor catalog<\/a><\/strong><\/p>\n<\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><\/div>\n<\/div>\n>\n\n\n<p class=\"wp-block-paragraph\">They are non-invasive devices that can measure speed and distance accurately and quickly. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These instruments use optics, light sources and sophisticated electronics to measure speed accurately, without physical contact with the material being measured. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">They are mainly used in the process industry, but they also have applications in other sectors such as aerospace, electronics and medical products.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An optical speed sensor can be used to measure both the speed and the length of the production line. Optical encoders also allow fast and accurate acquisition of the spatial position of objects moving along the production line and can provide instant information on the status of the production process. The VLM60 and the VLM500 from ASTECH are two of the most popular devices used for these applications.  <\/p>\n\n\n\n<!--more-->\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<style id=\"ea_dynamic_css6838\">#sp-ea-6838 .spcollapsing{height: 0; overflow: hidden; transition-property: height; transition-duration: 500ms;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single.eap_inactive>.ea-header a {background-color: #bb0000 !important; color: #fff !important;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single{ margin-bottom: 10px; border: 3px solid #e2e2e2; border-radius: 3px;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single.ea-expand{ border-color: #e2e2e2;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single:hover{ border-color: #e2e2e2;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single>.ea-header a {background: #eeeeee;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single.ea-expand>.ea-header a {background: #eee;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single>.ea-header:hover a 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class=\"wpforms-container wpforms-container-full\" id=\"wpforms-5697\"><form id=\"wpforms-form-5697\" class=\"wpforms-validate wpforms-form wpforms-ajax-form\" data-formid=\"5697\" method=\"post\" enctype=\"multipart\/form-data\" action=\"\/en\/wp-json\/wp\/v2\/posts\/21489\" data-token=\"5fb7d423c6fb2d34925daee72237c974\" data-token-time=\"1790584282\"><noscript class=\"wpforms-error-noscript\">Please enable JavaScript in your browser to complete this form.<\/noscript><div class=\"wpforms-field-container\"><div id=\"wpforms-5697-field_1-container\" class=\"wpforms-field wpforms-field-email\" data-field-id=\"1\"><label class=\"wpforms-field-label\" for=\"wpforms-5697-field_1\">Enter your email and our technical support team will contact you<\/label><input type=\"email\" id=\"wpforms-5697-field_1\" class=\"wpforms-field-large\" name=\"wpforms[fields][1]\" spellcheck=\"false\" ><\/div><div id=\"wpforms-5697-field_3-container\" class=\"wpforms-field wpforms-field-checkbox\" 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value=\"wpforms-submit\">Send<\/button><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/plugins\/wpforms-lite\/assets\/images\/submit-spin.svg\" class=\"wpforms-submit-spinner\" style=\"display: none;\" width=\"26\" height=\"26\" alt=\"Loading\"><\/div><\/form><\/div>  <!-- .wpforms-container -->\n<\/div>\n<\/div>\n\t\t\t<\/div>\n\t<\/div>\n\t<\/div><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Non-contact sensors provide high accuracy for distance measurements compared with any traditional technique, such as the use of rulers, calipers and other instruments conventionally available on the market. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The ability to take accurate measurements quickly makes optical speed sensors ideally suited to the industrial applications required by today&#8217;s dynamic and competitive market.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Optical speed sensors are very important instruments for measuring speed and length in in-line production. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This technology is useful for manufacturers that need precise real-time monitoring of production line performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The ASTECH range offers several models of optical speed sensors suited to measurement requirements in the manufacturing industry. The VLM60 was designed specifically for applications requiring accurate length and speed data on production lines with high operating temperatures. The system is equipped with a specialized high-resolution sensor that can monitor movement at distances of up to 1 m with millimeter accuracy. The device is also resistant to high temperatures up to 150 \u00b0C and is therefore suitable for the most extreme applications.   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The VLM500 is another model offered by ASTECH which includes a built-in optical encoder for precise real-time measurement of machine performance. The encoder supplies digitized signals to the central computer, giving operators accurate monitoring even in the most difficult conditions thanks to ASTECH&#8217;s exclusive patented mechanical design.  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The innovative technology of the VLM500 gives the end user accurate and efficient control over every critical aspect of the production process, with no problems caused by heat or unwanted vibration from external environmental factors such as dust and the like.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Finally, the VLM502 is a compact model designed specifically for high-performance industrial applications requiring accurate and repeatable length and speed measurements with no contact between the material to be measured and the instrument itself. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The device has a backlit LCD display showing the instantaneous reading extremely quickly, making it ideal for fast outputs from industrially advanced processes such as automatic assembly, laser cutting, CNC milling and the like.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In conclusion, we can state that optical speed sensors represent an important step forward in modern industrial technology, giving manufacturing companies longer service life and high accuracy in measuring the performance of production plants.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Introduction to non-contact measurement<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Non-contact speed and length measurement is a key topic in the field of engineering and advanced metrology. Technological innovation has made sophisticated optical instruments available, capable of taking highly accurate measurements without physically interfering with the object under examination. This measurement method is used in a wide range of fields, from industrial production to materials analysis and scientific research.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Optical instruments for non-contact measurements<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The use of optical instruments for non-contact measurement is based mainly on techniques such as photogrammetry, interferometry and laser systems. These instruments make it possible to acquire data by analyzing the light reflected or emitted by objects. Scanning lasers, for example, can generate high-resolution point clouds, making it possible to map the geometry of complex surfaces.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Photogrammetry: principles and applications<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Photogrammetry is a technique that makes it possible to obtain three-dimensional measurements from two-dimensional images. Using specific software, extremely accurate 3D models can be reconstructed. This method is particularly useful in fields such as surveying, architecture and the conservation of cultural heritage, where precision is crucial.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Interferometry: length measurement with nanometer precision<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Interferometry is a highly sophisticated method for measuring lengths with an accuracy that can reach the nanometer. This technique exploits the superposition of light waves to determine variations in length at very high resolution. It is used in research laboratories and in quality control applications in the most advanced sectors.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Laser Doppler: an innovative approach to speed measurement<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The laser Doppler principle makes it possible to measure the speed of moving objects without contact. By analyzing the change in frequency of the light reflected by a moving object, speed can be determined with great accuracy. This technology is used in a wide range of applications, from fluid dynamics to industrial process monitoring.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Advantages of non-contact measurements<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Non-contact measurements offer numerous advantages over traditional methods. Their non-invasive nature is essential in preserving the integrity of the object under examination, reducing the risk of damage or alteration. The accuracy and repeatability of the measurements are also often higher, allowing more reliable and detailed analysis.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Limitations and technical challenges<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Despite their many advantages, non-contact speed and length measurement also has some limitations. Factors such as surface reflectivity, environmental conditions and the presence of obstacles can adversely affect the results. It is therefore crucial to take these variables into account when designing experiments and interpreting the data.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Integration with automation systems<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The integration of non-contact optical measurement with industrial automation and control systems is a promising frontier. Installing optical sensors in automated processes allows data to be collected in real time, improving the effectiveness of monitoring and optimizing production processes. This synergy between measurement and automation is key to advancing Industry 4.0.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The future of optical measurement<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The future of non-contact length and speed measurement looks promising, with ongoing developments in optical technology and sensor systems. The emergence of advanced techniques, such as measurement based on artificial intelligence and machine learning, could further revolutionize the way we take measurements, making them even more precise and reliable. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In conclusion, non-contact speed and length measurement is a continuously evolving field, characterized by technological innovations that improve the precision and reliability of measurements. <\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<style id=\"ea_dynamic_css6838\">#sp-ea-6838 .spcollapsing{height: 0; overflow: hidden; transition-property: height; transition-duration: 500ms;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single.eap_inactive>.ea-header a {background-color: #bb0000 !important; color: #fff !important;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single{ margin-bottom: 10px; border: 3px solid #e2e2e2; border-radius: 3px;}#sp-ea-6838.sp-easy-accordion>.sp-ea-single.ea-expand{ 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