{"id":1942,"date":"2025-04-02T02:06:26","date_gmt":"2025-04-02T02:06:26","guid":{"rendered":"https:\/\/www.shalomeo.com\/blog\/?p=1942"},"modified":"2025-04-02T02:06:26","modified_gmt":"2025-04-02T02:06:26","slug":"thermal-camera-lenses-for-taking-thermal-photographs-of-circuit-boards","status":"publish","type":"post","link":"https:\/\/www.shalomeo.com\/blog\/thermal-camera-lenses-for-taking-thermal-photographs-of-circuit-boards\/1942.html","title":{"rendered":"Thermal camera lenses for taking thermal photographs of circuit boards"},"content":{"rendered":"\n<p>For taking thermal photographs of circuit boards, you need high-quality thermal camera lenses that provide precision, sharp detail, and accurate temperature measurement. Here\u2019s what you should consider when choosing the right lens:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Key Factors for Choosing a Thermal Camera Lens<\/h3>\n\n\n\n<p>&#x2705; Focal Length &amp; Field of View (FoV)<\/p>\n\n\n\n<ul>\n<li>Close-up\/Macro Lenses (10mm \u2013 25mm FoV): Ideal for detailed circuit board inspection.<\/li>\n\n\n\n<li>Wide-Angle Lenses (6mm \u2013 10mm FoV): Good for viewing larger components.<\/li>\n\n\n\n<li>Telephoto Lenses (50mm+ FoV): Used for zooming in on small areas of a PCB.<\/li>\n<\/ul>\n\n\n\n<p>&#x2705; Spectral Range<\/p>\n\n\n\n<ul>\n<li>Most thermal cameras operate in the longwave infrared (LWIR) range: 7.5 \u2013 14 \u00b5m.<\/li>\n\n\n\n<li>Ensure the lens is designed for this range to capture accurate thermal data.<\/li>\n<\/ul>\n\n\n\n<p>&#x2705; Resolution &amp; Pixel Pitch<\/p>\n\n\n\n<ul>\n<li>High-resolution sensors (e.g., 640\u00d7480 or higher) need quality optics to resolve fine PCB details.<\/li>\n\n\n\n<li>Small pixel pitch (e.g., 12\u00b5m or 17\u00b5m) improves sharpness when imaging tiny components.<\/li>\n<\/ul>\n\n\n\n<p>&#x2705; Lens Material<\/p>\n\n\n\n<ul>\n<li>Germanium (Ge): Most common material for <strong><a href=\"https:\/\/www.shalomeo.com\/Infrared-Optics\/Lens-Modules-8-12-Micro\" target=\"_blank\" rel=\"noreferrer noopener\">thermal camera lenses<\/a><\/strong>; provides excellent infrared transmission.<\/li>\n\n\n\n<li>Chalcogenide Glass: A cost-effective alternative with good IR performance.<\/li>\n\n\n\n<li>Zinc Selenide (ZnSe): Sometimes used in specialized applications.<\/li>\n<\/ul>\n\n\n\n<p>&#x2705; Close Focusing Distance<\/p>\n\n\n\n<ul>\n<li>For macro thermal imaging, ensure the lens supports a short focusing distance (~5\u201310 cm) to capture PCB details accurately.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Recommended Thermal Camera Lenses for PCB Inspection<\/h3>\n\n\n\n<ol>\n<li>FLIR Close-up Macro Lens (2.5\u00d7 or 1\u00d7 Magnification) \u2013 Perfect for high-resolution PCB inspection.<\/li>\n\n\n\n<li>Seek Thermal Macro Lens \u2013 Works with Seek thermal cameras, allowing close-up imaging of small heat sources.<\/li>\n\n\n\n<li>InfraTec Microscanner Lenses \u2013 Specially designed for high-precision thermal imaging of electronic circuits.<\/li>\n\n\n\n<li>Custom Germanium Lenses \u2013 If using a custom thermal camera module, manufacturers like Ophir, Edmund Optics, or Umicore offer precision lenses for PCB analysis.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">3. Applications in Circuit Board Testing<\/h3>\n\n\n\n<p>&#x2714; Identifying overheating components (e.g., resistors, transistors, ICs).<br>&#x2714; Detecting soldering defects or short circuits.<br>&#x2714; Evaluating power distribution and thermal efficiency.<br>&#x2714; Monitoring PCB heating in real-time during operation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>For taking thermal photographs of circuit boards,  &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[252],"_links":{"self":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts\/1942"}],"collection":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/comments?post=1942"}],"version-history":[{"count":1,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts\/1942\/revisions"}],"predecessor-version":[{"id":1943,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts\/1942\/revisions\/1943"}],"wp:attachment":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/media?parent=1942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/categories?post=1942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/tags?post=1942"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}