{"product_id":"btl-21-2-inch-bi-telecentric-lens-aoi-inspection","title":"BTL-21 Series 2\" Bi-Telecentric Lens M42\/M58 Mount for High-Precision AOI Inspection","description":"\u003ch2\u003eProduct Description\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBTL-21 Series 2\" Bi-Telecentric Lens for Advanced AOI Systems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Rapixel BTL-21 Series is a large-format 2\" bi-telecentric lens designed for high-precision machine vision applications. With M42\/M58 mounting compatibility, it provides stable magnification, ultra-low distortion, and accurate image acquisition for demanding inspection systems.\u003c\/p\u003e\n\u003cp\u003eSupporting 2\" sensors with FOV up to 300mm, the BTL-21 Series is optimized for AOI inspection, dimensional measurement, semiconductor inspection, and large-area defect detection where repeatability and optical accuracy are essential.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2\" Large Sensor Support for high-resolution vision cameras.\u003c\/li\u003e\n\u003cli\u003eBi-Telecentric Optical Design for accurate measurement imaging.\u003c\/li\u003e\n\u003cli\u003eM42\/M58 Mount Compatibility for flexible system integration.\u003c\/li\u003e\n\u003cli\u003eUltra-Low Distortion \u0026lt;0.1% for reliable inspection results.\u003c\/li\u003e\n\u003cli\u003eLarge FOV up to 300mm for wide-area imaging.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAutomated Optical Inspection (AOI)\u003c\/li\u003e\n\u003cli\u003ePCB \u0026amp; Semiconductor Inspection\u003c\/li\u003e\n\u003cli\u003ePrecision Dimensional Measurement\u003c\/li\u003e\n\u003cli\u003eElectronic Component Inspection\u003c\/li\u003e\n\u003cli\u003eLarge-Format Machine Vision Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: center;\"\u003eModel No.\u003c\/th\u003e\n\u003cth align=\"right\" style=\"text-align: center;\"\u003eFOV (Φmm)\u003c\/th\u003e\n\u003cth align=\"right\" style=\"text-align: center;\"\u003eMag. (X)\u003c\/th\u003e\n\u003cth align=\"right\" style=\"text-align: center;\"\u003eWD (mm)\u003c\/th\u003e\n\u003cth align=\"right\" style=\"text-align: center;\"\u003eMTF30 (lp\/mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.917X-110-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e36\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.917\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e110±2\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.786X-118-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e42\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.786\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e118±3\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.688X-128-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e48\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.688\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e128±3\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.589X-138-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e56\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.589\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e138±3\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.516X-158-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e64\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.516\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e158±3\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;90\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.458X-178-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e72\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.458\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e178±3\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;90\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.413X-228-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e80\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.413\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e228±4\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.367X-208-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e90\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.367\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e208±3\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.33X-238-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e100\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.330\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e238±4\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;118\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.3X-263-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e110\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.300\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e263±4\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.275X-273-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e120\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.275\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e273±5\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.243X-288-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e136\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.243\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e288±5\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.22X-300-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e150\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.220\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e300±5\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.194X-318-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e170\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.194\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e318±5\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.174X-330-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e190\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.174\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e330±5\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.153X-372-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e216\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.153\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e372±5\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.138X-410-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e240\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.138\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e410±6\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.128X-338-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e258\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.128\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e338±5\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBTL-0.11X-465-21(LM)\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e300\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e0.110\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e465±6\u003c\/td\u003e\n\u003ctd align=\"right\" style=\"text-align: center;\"\u003e\u0026gt;115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(LM) models feature adjustable back focal length.\u003cbr\u003eMTF30 values are measured under specified aperture conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/2837\/4127\/files\/telecentric-lens-for-aoi-inspection.png?v=1785134506\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/oLfDEuRPLu0?si=szQYig-8eCFJqZyM\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Rapixel","offers":[{"title":"Mag.0.917x WD 110mm[FOV 36mm]","offer_id":43606434742383,"sku":"BTL-0.917X-110-21(LM)","price":1750.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.786x WD 118mm[FOV 42mm]","offer_id":43606434775151,"sku":"BTL-0.786X-118-21(LM)","price":1800.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.688x WD 128mm[FOV 48mm]","offer_id":43606434807919,"sku":"BTL-0.688X-128-21(LM)","price":1965.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.589x WD 138mm[FOV 56mm]","offer_id":43606434840687,"sku":"BTL-0.589X-138-21(LM)","price":2120.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.516x WD 158mm[FOV 64mm]","offer_id":43606434873455,"sku":"BTL-0.516X-158-21(LM)","price":2550.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.458x WD 178mm[FOV 72mm]","offer_id":43606434906223,"sku":"BTL-0.458X-178-21(LM)","price":2650.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.413x WD 228mm[FOV 80mm]","offer_id":43606434938991,"sku":"BTL-0.413X-228-21(LM)","price":2760.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.367x WD 208mm[FOV 90mm]","offer_id":43606434971759,"sku":"BTL-0.367X-208-21(LM)","price":2870.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.33x WD 238mm[FOV 100mm]","offer_id":43606435004527,"sku":"BTL-0.33X-238-21(LM)","price":2970.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.3x WD 263mm[FOV 110mm]","offer_id":43606435037295,"sku":"BTL-0.3X-263-21(LM)","price":3100.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.275x WD 273mm[FOV 120mm]","offer_id":43606435070063,"sku":"BTL-0.275X-273-21(LM)","price":3460.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.243x WD 288mm[FOV 136mm]","offer_id":53901342867567,"sku":"BTL-0.243X-288-21(LM)","price":3500.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.22x WD 300mm[FOV 150mm]","offer_id":53901342900335,"sku":"BTL-0.22X-300-21(LM)","price":3715.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.194x WD 318mm[FOV 170mm]","offer_id":53901342933103,"sku":"BTL-0.194X-318-21(LM)","price":3930.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.174x WD 330mm[FOV 190mm]","offer_id":53901342965871,"sku":"BTL-0.174X-330-21(LM)","price":4350.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.153x WD 372mm[FOV 216mm]","offer_id":53901342998639,"sku":"BTL-0.153X-372-21(LM)","price":5300.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.138x WD 410mm[FOV 240mm]","offer_id":53901343031407,"sku":"BTL-0.138X-410-21(LM)","price":7055.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.128x WD 338mm[FOV 258mm]","offer_id":53901343064175,"sku":"BTL-0.128X-338-21(LM)","price":7420.0,"currency_code":"USD","in_stock":true},{"title":"Mag.0.11x WD 465mm[FOV 300mm]","offer_id":53901343096943,"sku":"BTL-0.11X-465-21(LM)","price":8540.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/2837\/4127\/files\/BTL-21_Series_2_Inch_Bi-Telecentric_Lens_for_AOI_Inspection-1.png?v=1785307527","url":"https:\/\/shop.rapixeltech.com\/cs\/products\/btl-21-2-inch-bi-telecentric-lens-aoi-inspection","provider":"Rapixel Offical Store","version":"1.0","type":"link"}