Many factors must be considered when choosing an infrared lens for a thermal imaging camera. These include knowledge of the technology being used and of the intended application for the imager. It is also essential to have a good idea of what results must be achieved in light of the price range budgeted for a new thermal\u00a0imaging\u00a0lenses (the entire lens assembly mounted to the camera). Knowing the critical aspects of thermal\u00a0imaging lenses facilitates the selection process.<\/p>\n\n\n\n
There are three main regions, or wavebands, of sensitivity most common with today’s thermal\u00a0imaging\u00a0lenses. The first is the near- or short-wave IR, which spans approximately 0.9 to 2.5 \u00b5m. Next is midwave IR, roughly from 3 to 5 \u00b5m, and finally long-wave IR, from about 8 to 12 \u00b5m. Some thermal\u00a0imaging\u00a0lenses<\/a><\/strong> can work outside of these areas, but they are generally optimized for them.<\/p>\n\n\n\n These thermal imaging lenses are, in fact, designed to operate over a set waveband, whether it is one of the bands listed above or more than one band; e.g., 1.5 to 5 or 3 to 12 \u00b5m. When designed for a particular waveband, many factors influence their performance, including material selection, lens thickness, air spacing, surface curvatures and coatings.<\/p>\n\n\n\n This said, a thermal imaging lenses, for example, may be optimized as a long-wave device but have some low level of sensitivity down to 3 \u00b5m. For a particular application, there may be a requirement to use this camera’s full range of sensitivity. If a lens is designed for the long-wave IR but is merely coated differently to achieve maximum transmission over the complete range, the image quality would be very poor below 8 \u00b5m. A lens would have to be designed specifically to perform over the full range of 3 to 12 \u00b5m by taking the factors listed above into account to ensure image quality.<\/p>\n","protected":false},"excerpt":{"rendered":" Many factors must be considered when choosing an i …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[258],"_links":{"self":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts\/1072"}],"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=1072"}],"version-history":[{"count":0,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts\/1072\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/media?parent=1072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/categories?post=1072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/tags?post=1072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}