{"id":3799,"date":"2024-04-02T11:22:14","date_gmt":"2024-04-02T15:22:14","guid":{"rendered":"https:\/\/www.1stvision.com\/machine-vision-solutions\/?p=3799"},"modified":"2024-04-02T11:22:14","modified_gmt":"2024-04-02T15:22:14","slug":"machine-vision-problems-solved-with-swir-lighting","status":"publish","type":"post","link":"https:\/\/www.1stvision.com\/machine-vision-solutions\/2024\/04\/machine-vision-problems-solved-with-swir-lighting.html","title":{"rendered":"Machine vision problems solved with SWIR lighting"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Some problems best solved outside the visible spectrum<\/h2>\n\n\n\n<p>Most of us think about vision with a human bias, since most of us are normally sighted with color stereo vision.  We perceive distance, hues, shading, and intensity, for materials that emit or reflect light in the wavelengths 380 &#8211; 750 nm.  Many machine vision problems can also be solved using monochrome or color light and sensors in the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Visible_spectrum\" target=\"_blank\" rel=\"noreferrer noopener\">visible spectrum<\/a>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"674\" height=\"143\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Wavelength-spectrum.jpg\" alt=\"\" class=\"wp-image-3808\" srcset=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Wavelength-spectrum.jpg 674w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Wavelength-spectrum-300x64.jpg 300w\" sizes=\"auto, (max-width: 674px) 100vw, 674px\" \/><figcaption class=\"wp-element-caption\">Human visible light &#8211; marked VIS &#8211; is just a small portion of what sensors can detect &#8211; Courtesy Edmund Optics<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Many applications are best solved or even only solved, in wavelengths that we cannot see with our own eyes.  There are sensors that react to wavelengths in these other parts of the spectrum.  Particularly interesting are <a href=\"https:\/\/en.wikipedia.org\/wiki\/SWIR\" target=\"_blank\" rel=\"noreferrer noopener\">short wave infrared (SWIR)<\/a> and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Ultraviolet\" target=\"_blank\" rel=\"noreferrer noopener\">ultraviolet (UV)<\/a>.  In this blog we focus on SWIR, with wavelengths in the range 0.9 &#8211; 1.7um.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Examples in SWIR space<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"486\" height=\"235\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Fruit-bruising.jpg\" alt=\"\" class=\"wp-image-3800\" srcset=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Fruit-bruising.jpg 486w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Fruit-bruising-300x145.jpg 300w\" sizes=\"auto, (max-width: 486px) 100vw, 486px\" \/><figcaption class=\"wp-element-caption\">The same apple with visible vs. SWIR lighting and sensors &#8211; Courtesy Effilux<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Food processing and agricultural applications possible with SWIR.  Consider the above images, where the visible image shows what appears to be a ripe apple in good condition.  With SWIR imaging, a significant bruise is visible &#8211; as SWIR detects higher densities of water which render as black or dark grey.  Supplier yields determine profits, losses, and reputations.  Apple suppliers benefit by automated sorting of apples that will travel to grocery shelves vs. lightly bruised fruit that can be profitably juiced or sauced.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"465\" height=\"255\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Fill-levels.jpg\" alt=\"\" class=\"wp-image-3801\" srcset=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Fill-levels.jpg 465w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Fill-levels-300x165.jpg 300w\" sizes=\"auto, (max-width: 465px) 100vw, 465px\" \/><figcaption class=\"wp-element-caption\">Even clear fluids in opaque bottles render dark in SWIR light &#8211;<br> Courtesy Effilux<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Whether controlling the filling apparatus or quality controlling the nominally filled bottles, SWIR light and sensors can see through glass or opaque plastic bottles and render fluids dark while air renders white.  The detection side of the application is solved!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Hyperspectral imaging<\/h2>\n\n\n\n<p>Yet another SWIR application is <a href=\"https:\/\/en.wikipedia.org\/wiki\/Hyperspectral_imaging\" target=\"_blank\" rel=\"noreferrer noopener\">hyperspectral imaging<\/a>.  By identifying the spectral signature of every pixel in a scene, we can use light to discern the unique profile of substances.  This in turn can identify the substance and permit object identification or process detection.  Consider also <a href=\"https:\/\/en.wikipedia.org\/wiki\/Multispectral_imaging\" target=\"_blank\" rel=\"noreferrer noopener\">multi-spectral imaging<\/a>, an efficient sub-mode of hyperspectral imaging that only looks for certain bands sufficient to discern &#8220;all that&#8217;s needed&#8221;.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"493\" height=\"387\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Hyperspectral-and-multispectral.jpg\" alt=\"\" class=\"wp-image-3809\" srcset=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Hyperspectral-and-multispectral.jpg 493w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Hyperspectral-and-multispectral-300x235.jpg 300w\" sizes=\"auto, (max-width: 493px) 100vw, 493px\" \/><figcaption class=\"wp-element-caption\">Multispectral and hyperspectral imaging &#8211; Courtesy Allied Vision Technologies<\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">How to do SWIR imaging<\/h2>\n\n\n\n<p>The SWIR images shown above are pseudo-images, where pixel values in the SWIR spectrum have been re-mapped into the visible spectrum along grey levels.   But that&#8217;s just to help our understanding, as an automated machine vision application doesn&#8217;t need to show an image to a human operator.  <\/p>\n\n\n\n<p>In machine vision, an algorithm on the host PC interprets the pixel values to identify features and make actionable determinations.  Such as &#8220;move apple to juicer&#8221; or &#8220;continue filling bottle&#8221;.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Components for SWIR imaging<\/h2>\n\n\n\n<p>SWIR sensors and cameras; SWIR lighting, and SWIR lenses.   For cameras and sensors, consider <a href=\"https:\/\/www.1stvision.com\/cameras\/family\/Allied-Vision\/Goldeye-cameras?siq_name=$[FNAME]$$[LNAME]$&amp;siq_email=$[EMAIL]$\" target=\"_blank\" rel=\"noreferrer noopener\">Allied Vision&#8217;s Goldeye series<\/a>:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"559\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Goldeye.jpg\" alt=\"\" class=\"wp-image-3803\" srcset=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Goldeye.jpg 540w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Goldeye-290x300.jpg 290w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><figcaption class=\"wp-element-caption\">Goldeye SWIR cameras &#8211; Courtesy Allied Vision<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Goldeye SWIR cameras are available in compact, rugged, industrial models, or as advanced scientific versions. The former has optional thermal electric cooling (TEC), while the latter is only available in cooled versions.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-admin\/post.php?siq_name=$[FNAME]$$[LNAME]$&amp;siq_email=$[EMAIL]$\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"459\" height=\"82\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2018\/02\/Contact-to-speak-to-an-industry-expert-at-1stvision.png\" alt=\"Contact us\" class=\"wp-image-813\" srcset=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2018\/02\/Contact-to-speak-to-an-industry-expert-at-1stvision.png 459w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2018\/02\/Contact-to-speak-to-an-industry-expert-at-1stvision-300x54.png 300w\" sizes=\"auto, (max-width: 459px) 100vw, 459px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>For SWIR lighting, consider Effilux bar and ring lights.  Effilux lights come in various wavelengths for both the visible and SWIR applications.  <a href=\"?siq_name=$[FNAME]$$[LNAME]$&amp;siq_email=$[EMAIL]$\" target=\"_blank\" rel=\"noreferrer noopener\">Contact us<\/a> to discuss SWIR lighting options.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"776\" height=\"311\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Effi-flex-and-Effi-ring.jpg\" alt=\"\" class=\"wp-image-3804\" srcset=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Effi-flex-and-Effi-ring.jpg 776w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Effi-flex-and-Effi-ring-300x120.jpg 300w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/03\/Effi-flex-and-Effi-ring-768x308.jpg 768w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><figcaption class=\"wp-element-caption\">EFFI-FLEX bar light and EFFI-RING ring light &#8211; Courtesy Effilux<\/figcaption><\/figure>\n<\/div>\n\n\n<p>By emitting light in the SWIR range, directed to reflect off targets known to reveal features in the SWIR spectrum, one builds the components necessary for a successful application.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"516\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Hyperspectral-bar-light-2-1024x516.jpg\" alt=\"\" class=\"wp-image-3814\" srcset=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Hyperspectral-bar-light-2-1024x516.jpg 1024w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Hyperspectral-bar-light-2-300x151.jpg 300w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Hyperspectral-bar-light-2-768x387.jpg 768w, https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2024\/04\/Hyperspectral-bar-light-2.jpg 1029w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><figcaption class=\"wp-element-caption\">Hyperspectral bar lights &#8211; Courtesy Effilux<\/figcaption><\/figure>\n<\/div>\n\n\n<p>And don&#8217;t forget the lens.  One may also need a SWIR-specific lens, or a hybrid machine vision lens that passes both visible and SWIR wavelengths.  Consider Computar <a href=\"https:\/\/www.1stvision.com\/lens\/family\/Computar-VSW-VISWIR-Lite-lenses\" target=\"_blank\" rel=\"noreferrer noopener\">VISWIR Lite Series Lenses<\/a> or their <a href=\"https:\/\/www.1stvision.com\/lens\/family\/Computar-APVSW-VISWIR-Hyper-APO-lenses\" target=\"_blank\" rel=\"noreferrer noopener\">VISWIR Hyper-APO Series Lenses<\/a>.  It&#8217;s beyond the scope of this short blog to go into SWIR lensing.  Read our recent blog on <a href=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/2023\/08\/tamron-wide-band-swir-lenses-and-applications.html?siq_name=$[FNAME]$$[LNAME]$&amp;siq_email=$[EMAIL]$\" target=\"_blank\" rel=\"noreferrer noopener\">Wide Band SWIR Lensing and Applications <\/a>or speak with your lensing professional to be sure you get the right lens.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Takeaway<\/h2>\n\n\n\n<p>Whether SWIR or UV (more on that another time), the key point is that some machine vision problems are best solved outside the human visible portions of the spectrum.  While there are innovative users and manufacturers continuing to push the boundaries &#8211; these areas are sufficiently mature that solutions are predictably creatable.  Think beyond the visible constraints!<\/p>\n\n\n\n<p>Call us at 978-474-0044.<a class=\"gv-tel-link\" title=\"Call +1 978-474-0044 via Google Voice\" href=\"http:\/\/voice.google.com\/calls?a=nc,%2B19784740044\" target=\"_blank\" rel=\"noopener\"><\/a><a href=\"http:\/\/voice.google.com\/calls?a=nc,%2B19784740044\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>&nbsp;Or follow the contact us link below to provide your information, and we\u2019ll call you.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><a href=\"https:\/\/www.1stvision.com\/contactForm?siq_name=$[FNAME]$$[LNAME]$&amp;siq_email=$[EMAIL]$\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"173\" height=\"41\" src=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/wp-content\/uploads\/2021\/05\/Contact-Us-1.jpg\" alt=\"\" class=\"wp-image-1866\"\/><\/a><\/figure>\n<\/div>\n\n\n<p><a href=\"https:\/\/www.1stvision.com\/?siq_name=$%5bFNAME%5d$%20$%5bLNAME%5d$&amp;siq_email=$%5bEMAIL%5d$\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>1st Vision\u2019s<\/strong><\/a>&nbsp;sales engineers have over 100 years of combined experience to assist in your camera and components selection.&nbsp; With a large portfolio of&nbsp;<a href=\"https:\/\/www.1stvision.com\/lens\/machine-vision-lenses?siq_name=$%5bFNAME%5d$%20$%5bLNAME%5d$&amp;siq_email=$%5bEMAIL%5d$\" target=\"_blank\" rel=\"noreferrer noopener\">lenses<\/a>,&nbsp;<a href=\"https:\/\/www.1stvision.com\/cameras\/accessories\/Data-cables?siq_name=$%5bFNAME%5d$%20$%5bLNAME%5d$&amp;siq_email=$%5bEMAIL%5d$\" target=\"_blank\" rel=\"noreferrer noopener\">cables<\/a>,&nbsp;<a href=\"https:\/\/www.1stvision.com\/cameras\/accessories\/NIC-cards?siq_name=$%5bFNAME%5d$%20$%5bLNAME%5d$&amp;siq_email=$%5bEMAIL%5d$\" target=\"_blank\" rel=\"noreferrer noopener\">NIC cards<\/a>&nbsp;and&nbsp;<a href=\"https:\/\/www.1stvision.com\/1stvision-industrial-computer-systems\/embedded-industrial-computer?siq_name=$%5bFNAME%5d$%20$%5bLNAME%5d$&amp;siq_email=$%5bEMAIL%5d$\" target=\"_blank\" rel=\"noreferrer noopener\">industrial computers<\/a>, we can provide a&nbsp;<a href=\"https:\/\/www.1stvision.com\/components-needed-for-machine-vision-and-industrial-imaging-systems?siq_name=$%5bFNAME%5d$%20$%5bLNAME%5d$&amp;siq_email=$%5bEMAIL%5d$\" target=\"_blank\" rel=\"noreferrer noopener\">full vision solution<\/a>!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Some problems best solved outside the visible spectrum Most of us think about vision with a human bias, since most of us are normally sighted with color stereo vision. We perceive distance, hues, shading, and intensity, for materials that emit or reflect light in the wavelengths 380 &#8211; 750 nm. Many machine vision problems can &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/2024\/04\/machine-vision-problems-solved-with-swir-lighting.html\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Machine vision problems solved with SWIR lighting&#8221;<\/span><\/a><\/p>\n","protected":false},"author":10,"featured_media":3800,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[8,109],"tags":[],"class_list":["post-3799","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cameras","category-lighting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Machine vision problems solved with SWIR lighting<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.1stvision.com\/machine-vision-solutions\/2024\/04\/machine-vision-problems-solved-with-swir-lighting.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Machine vision problems solved with SWIR lighting\" \/>\n<meta property=\"og:description\" content=\"Some problems best solved outside the visible spectrum Most of us think about vision with a human bias, since most of us are normally sighted with color stereo vision. 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