{"title":"Laser Collimating \u0026 Focusing Lenses","description":"\u003cp\u003eOur \u003cstrong\u003elaser collimating and focusing lenses\u003c\/strong\u003e are precision-engineered for high-performance laser cutting heads from top brands like \u003cstrong\u003eRaytools, Precitec, WSX, BOCI, OSPRI\u003c\/strong\u003e. With \u003cstrong\u003ehigh transmission\u003c\/strong\u003e, \u003cstrong\u003eoptimized AR coating\u003c\/strong\u003e, and \u003cstrong\u003elow-loss optical design\u003c\/strong\u003e, these lenses deliver \u003cstrong\u003esuperior beam quality\u003c\/strong\u003e, \u003cstrong\u003estable cutting performance\u003c\/strong\u003e, and \u003cstrong\u003eextended service life\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eWhether you need \u003cem\u003eoriginal OEM parts\u003c\/em\u003e or \u003cem\u003epremium-compatible replacements\u003c\/em\u003e, our lenses ensure perfect fit, easy installation, and consistent performance for demanding industrial applications.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaytools\u003c\/strong\u003e – BMH109, BMH110, BMH111, BMH114S, BT210S, BT240, BT240S, BM06K, BS12K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecitec\u003c\/strong\u003e – LightCutter, ProCutter, ProCutter 2.0, ProCutter Zoom 2.0, ProCutter Thunder, ProCutter HP, ProCutter Zoom HP, ProWeld, FineCutter, ScanMaster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWSX\u003c\/strong\u003e – NC30, NC30A, NC30B, NC30B PLUS, NC50B, NC50C, NC60B, KC15, KC20, KC30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBOCI\u003c\/strong\u003e – BM109, BM109D, BM110, BM111, BM114S, BT210, BT210S, BT240, BT240S, BM06K, BS12K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOSPRI\u003c\/strong\u003e – OSH100, OSH110, OSH120, OSH150, OSL200, OSL250, OSL300\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFocal Lengths: F100, F125, F150, F200\u003c\/li\u003e\n\u003cli\u003eLens Diameters: D28, D30, D37\u003c\/li\u003e\n\u003cli\u003eTypes: Collimating lenses \u0026amp; focusing lenses, single or combined sets\u003c\/li\u003e\n\u003cli\u003eMaterial: High-purity fused silica with AR coating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdvantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Transmission\u003c\/strong\u003e – Maximizes laser efficiency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Loss\u003c\/strong\u003e – Improves cutting precision \u0026amp; reduces energy waste\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Options\u003c\/strong\u003e – OEM \u0026amp; compatible replacements available\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Replacement\u003c\/strong\u003e – Accurate fit for quick installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGlobal Shipping\u003c\/h3\u003e\n\u003cp\u003eWe offer \u003cstrong\u003efast worldwide delivery\u003c\/strong\u003e from our international warehouses, ensuring minimal downtime and consistent supply for your production line.\u003c\/p\u003e\n\n\u003c!-- Hidden SEO Keywords --\u003e\n\u003cdiv style=\"display:none;\"\u003e\nLaser collimating lenses, Laser focusing lenses, Raytools BMH109 BMH110 BMH111 BMH114S BT210S BT240 BT240S BM06K BS12K, Precitec LightCutter ProCutter ProCutter 2.0 ProCutter Zoom 2.0 ProCutter Thunder ProCutter HP ProCutter Zoom HP ProWeld FineCutter ScanMaster, WSX NC30 NC30A NC30B NC30B PLUS NC50B NC50C NC60B KC15 KC20 KC30, BOCI BM109 BM109D BM110 BM111 BM114S BT210 BT210S BT240 BT240S BM06K BS12K, OSPRI OSH100 OSH110 OSH120 OSH150 OSL200 OSL250 OSL300, laser cutter lens, laser optics, high precision laser lenses\n\u003c\/div\u003e\n","products":[{"product_id":"wsx-original-collimating-focusing-lens-group","title":"WSX Collimating \u0026 Focusing Lens Groups D30\/D37 | Chase Laser","description":"\u003cdiv style=\"font-size:14px; line-height:1.65\"\u003e\n  \u003cp\u003e\u003cstrong\u003eWSX Original Collimating \u0026amp; Focusing Lens Groups\u003c\/strong\u003e for fiber-laser cutting heads.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiameters\u003c\/strong\u003e: D30 \/ D37\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSpecs\u003c\/strong\u003e: \u003cem\u003eCollimating\u003c\/em\u003e F75 \/ F100; \u003cem\u003eFocusing\u003c\/em\u003e F125 \/ F150 \/ F190 \/ F200\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatibility (by head)\u003c\/strong\u003e: KC13 \/ KC15 \/ NC30 \/ NC30B \/ NC60\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptics\u003c\/strong\u003e: fused silica, high-transmission AR coating; OEM lot \u0026amp; label for traceability\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePacking\u003c\/strong\u003e: factory-sealed, individual protection\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\u003cstrong\u003eHow to choose\u003c\/strong\u003e: match your \u003cem\u003ehead model\u003c\/em\u003e (KC\/NC series), \u003cem\u003ediameter\u003c\/em\u003e (D30 or D37) and \u003cem\u003espec\u003c\/em\u003e (collimating or focusing + focal length). If unsure, send a photo of the head label.\u003c\/p\u003e\n\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"font-size:13px\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003cth\u003eHead model\u003c\/th\u003e\n\u003cth\u003eTypical specs\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eD30\u003c\/td\u003e\n\u003ctd\u003eKC13 \/ KC15 \/ NC30 \/ NC30B\u003c\/td\u003e\n\u003ctd\u003eCollimating F75 \/ F100; Focusing F125 \/ F150 \/ F200\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eNC60\u003c\/td\u003e\n\u003ctd\u003eCollimating F100; Focusing F190\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cp\u003e\u003cstrong\u003eNote on pricing\u003c\/strong\u003e: USD prices are converted from CNY at the current rate; minor differences may occur due to payment processor spread.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"WSX","offers":[{"title":"D30 \/ KC13\/KC15 \/ Focusing F125","offer_id":52574427250961,"sku":"WSX-D30-FOC-F125-KC13KC15","price":63.08,"currency_code":"USD","in_stock":true},{"title":"D30 \/ KC13\/KC15\/NC30\/… \/ Collimating F100","offer_id":52574427283729,"sku":"WSX-D30-COL-F100-KC13KC15","price":63.08,"currency_code":"USD","in_stock":true},{"title":"D30 \/ KC13\/KC15\/NC30\/… \/ Collimating F75","offer_id":52574427316497,"sku":"WSX-D30-COL-F75-KC13KC15","price":63.08,"currency_code":"USD","in_stock":true},{"title":"D30 \/ NC30\/NC30B \/ Focusing F125","offer_id":52574427349265,"sku":"WSX-D30-FOC-F125-NC30NC30","price":63.08,"currency_code":"USD","in_stock":true},{"title":"D30 \/ NC30\/NC30B \/ Focusing F150","offer_id":52574427382033,"sku":"WSX-D30-FOC-F150-NC30NC30","price":63.08,"currency_code":"USD","in_stock":true},{"title":"D30 \/ NC30\/NC30B \/ Focusing F200","offer_id":52574427414801,"sku":"WSX-D30-FOC-F200-NC30NC30","price":63.08,"currency_code":"USD","in_stock":true},{"title":"D37 \/ NC60 \/ Collimating F100","offer_id":52574427447569,"sku":"WSX-D37-COL-F100-NC60","price":280.62,"currency_code":"USD","in_stock":true},{"title":"D37 \/ NC60 \/ Focusing F200","offer_id":52574427480337,"sku":"WSX-D37-FOC-F190-NC60","price":280.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0938\/9867\/0353\/files\/WSXOriginalCollimating_amp_FocusingLens.png?v=1760868689"},{"product_id":"ospri-original-collimating-focusing-lens-groups","title":"OSPRI Collimating\/Focusing Lens Groups D30\/D37 | Chase Laser","description":"\u003cdiv style=\"font-size:14px; line-height:1.65\"\u003e\n  \u003cp\u003e\u003cstrong\u003eOSPRI Original Collimating \u0026amp; Focusing Lens Groups\u003c\/strong\u003e for fiber-laser cutting heads.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiameters\u003c\/strong\u003e: D30 \/ D37\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSpecs covered\u003c\/strong\u003e: Collimating F75 \/ F100; Focusing F125 \/ F150 \/ F200\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptics\u003c\/strong\u003e: fused-silica substrate, high-transmission AR coating (both sides)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePacking\u003c\/strong\u003e: factory-sealed with OEM lot \u0026amp; label for traceability\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\u003cstrong\u003eIncluded variants\u003c\/strong\u003e (this product page): \n    Collimating \u003cem\u003eD30-F75\u003c\/em\u003e, \u003cem\u003eD30-F100\u003c\/em\u003e, \u003cem\u003eD37-F100\u003c\/em\u003e; \n    Focusing \u003cem\u003eD30-F125\u003c\/em\u003e, \u003cem\u003eD30-F150\u003c\/em\u003e, \u003cem\u003eD30-F200\u003c\/em\u003e, \u003cem\u003eD37-F200\u003c\/em\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eHow to choose\u003c\/strong\u003e: match your \u003cem\u003egroup\u003c\/em\u003e (Collimating \/ Focusing), \u003cem\u003ediameter\u003c\/em\u003e (D30\/D37) and \u003cem\u003efocal length\u003c\/em\u003e (Fxx). If unsure, send a photo of the head label and the current lens.\u003c\/p\u003e\n\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"font-size:13px\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGroup\u003c\/th\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003cth\u003eFocal length\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003eD30\u003c\/td\u003e\n\u003ctd\u003eF75 \/ F100\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF100\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eD30\u003c\/td\u003e\n\u003ctd\u003eF125 \/ F150 \/ F200\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cp\u003e\u003cem\u003eNote\u003c\/em\u003e: Pricing is per piece and may vary by specification.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"OSPRI","offers":[{"title":"Collimating \/ D30 \/ F75","offer_id":52574466900241,"sku":"OSPRI-CL-D30-F75","price":140.5,"currency_code":"USD","in_stock":true},{"title":"Collimating \/ D30 \/ F100","offer_id":52574466933009,"sku":"OSPRI-CL-D30-F100","price":140.5,"currency_code":"USD","in_stock":true},{"title":"Collimating \/ D37 \/ F100","offer_id":52574466965777,"sku":"OSPRI-CL-D37-F100","price":280.8,"currency_code":"USD","in_stock":true},{"title":"Focusing \/ D30 \/ F125","offer_id":52574466998545,"sku":"OSPRI-FL-D30-F125","price":140.5,"currency_code":"USD","in_stock":true},{"title":"Focusing \/ D30 \/ F150","offer_id":52574467031313,"sku":"OSPRI-FL-D30-F150","price":140.5,"currency_code":"USD","in_stock":true},{"title":"Focusing \/ D30 \/ F200","offer_id":52574467064081,"sku":"OSPRI-FL-D30-F200","price":140.5,"currency_code":"USD","in_stock":true},{"title":"Focusing \/ D37 \/ F200","offer_id":52574467096849,"sku":"OSPRI-FL-D37-F200","price":280.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0938\/9867\/0353\/files\/OSPRI-Original-Collimating-Focusing_918e551a-d805-4cd2-b797-55e235d7928c.png?v=1760871922"},{"product_id":"precitec-original-collimating-focusing-lenses","title":"Precitec Original Collimating \u0026 Focusing Lenses","description":"\u003c!-- =========================\n Precitec Original Collimating \u0026 Focusing Lenses — Rich Description (EN only)\n========================= --\u003e\n\u003ch2\u003ePrecitec Original Collimating \u0026amp; Focusing Lenses (D30\/D37)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eOriginal Precitec optical lenses for fiber-laser cutting heads.\u003c\/strong\u003e Select your \u003cstrong\u003eDiameter\u003c\/strong\u003e (D30 or D37), \u003cstrong\u003eFocal Length\u003c\/strong\u003e (F100–F300) and \u003cstrong\u003eSpec\u003c\/strong\u003e (Collimating \/ Focusing \/ Aspheric + power rating). Built for 1 µm Yb-fiber lasers and high-power industrial cutting.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Precitec laser heads (verify D30\/D37 and focal length before ordering).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTypes:\u003c\/strong\u003e Collimating (beam collimation) \u0026amp; Focusing (spot formation); \u003cem\u003easpheric\u003c\/em\u003e options for high-power heads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower ratings:\u003c\/strong\u003e 4–30 kW (see variant list).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptics:\u003c\/strong\u003e Laser-grade fused-silica substrates with high-damage-threshold AR coating for 1030–1090 nm.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.2 kg per item. \u003cstrong\u003eTax-exempt\u003c\/strong\u003e on this store.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePacking:\u003c\/strong\u003e Each lens is individually protected and sealed for safe transport.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3 id=\"how-to-choose\"\u003eHow to choose the right lens\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfirm diameter\u003c\/strong\u003e on your head label or existing lens: D30 or D37 (must match mechanically).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIdentify function:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCollimating lens\u003c\/strong\u003e (near the fiber input) converts the diverging beam to a parallel beam.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eFocusing lens\u003c\/strong\u003e (above the nozzle) concentrates the parallel beam into the cutting spot.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePick focal length\u003c\/strong\u003e by process needs (shorter F → smaller spot \u0026amp; shallower depth; longer F → larger process window \u0026amp; more standoff).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatch power level:\u003c\/strong\u003e for ≥15 kW, choose \u003cem\u003easpheric\u003c\/em\u003e options where noted to reduce aberrations and thermal load.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cdiv style=\"border:1px solid #e5e7eb;border-radius:12px;padding:14px;background:#fafafa;\"\u003e\n  \u003cstrong\u003eTip:\u003c\/strong\u003e Not sure? Send us a photo of your laser-head label and your current lens markings. We’ll confirm compatibility before you buy.\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch3 id=\"variant-matrix\"\u003eVariant matrix (quick reference)\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead style=\"background:#f3f4f6;\"\u003e\n    \u003ctr\u003e\n      \u003cth\u003eDiameter\u003c\/th\u003e\n      \u003cth\u003eFocal Length\u003c\/th\u003e\n      \u003cth\u003eType\u003c\/th\u003e\n      \u003cth\u003eAspheric\u003c\/th\u003e\n      \u003cth\u003ePower rating\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003c!-- 4 kW (D30) --\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD30\u003c\/td\u003e\n\u003ctd\u003eF100\u003c\/td\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD30\u003c\/td\u003e\n\u003ctd\u003eF125\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD30\u003c\/td\u003e\n\u003ctd\u003eF150\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD30\u003c\/td\u003e\n\u003ctd\u003eF200\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003c!-- 6 kW (D37) --\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF100\u003c\/td\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF150\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF200\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003c!-- 8 kW (D37) --\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF100\u003c\/td\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e8 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF150\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e8 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF200\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e8 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003c!-- 12 kW (D37) --\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF100\u003c\/td\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF150\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF200\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003c!-- 15 kW (D37, Aspheric Collimating) --\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF100\u003c\/td\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAspheric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF150\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e15 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF200\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e15 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003c!-- 20 kW (D37, Aspheric Collimating) --\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF100\u003c\/td\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAspheric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF150\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e20 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF200\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e20 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF250\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e20 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\n    \u003c!-- 30 kW (D37, Aspheric Collimating \u0026 Aspheric F300 Focus) --\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF100\u003c\/td\u003e\n\u003ctd\u003eCollimating\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAspheric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF150\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF200\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF250\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eD37\u003c\/td\u003e\n\u003ctd\u003eF300\u003c\/td\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAspheric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch3 id=\"tech-specs\"\u003eTechnical information\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign wavelength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1030–1090 nm (Yb-fiber lasers)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFused silica (low absorption, high thermal stability)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-power AR coating (low reflectance, high damage threshold)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable diameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eD30, D37 (must match your laser head)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable focal lengths\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eF100, F125, F150, F200, F250, F300\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 kg per item\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCollimating (fiber output → parallel beam) \/ Focusing (parallel beam → cutting spot)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommendation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUse aspheric versions on high-power heads to reduce aberration and maintain spot quality\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch3 id=\"install\"\u003eInstallation \u0026amp; maintenance\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnvironment:\u003c\/strong\u003e Work in a clean, enclosed, dust-free area. Wear powder-free nitrile gloves and a mask.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCheck parts:\u003c\/strong\u003e Verify diameter and F value; inspect O-rings, spacers, and seats for residues.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e Keep coated surfaces clean; follow manufacturer orientation marks if present.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Place gently into the holder; tighten the retaining ring to the manufacturer’s torque (do not overtighten).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlignment:\u003c\/strong\u003e After collimator replacement, check beam collimation and nozzle centering.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch4\u003eCleaning guideline\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBlow off loose particles with filtered, oil-free air from center to edge.\u003c\/li\u003e\n  \u003cli\u003eSingle \u003cem\u003edrag-wipe\u003c\/em\u003e with lint-free lens tissue lightly wetted with 99.9% IPA; avoid circular scrubbing.\u003c\/li\u003e\n  \u003cli\u003eDo not touch the surface; never reuse tissues; air-dry in a clean environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"border-left:4px solid #ef4444;padding:10px 12px;background:#fff7f7;border-radius:8px;\"\u003e\n  \u003cstrong\u003eWarning:\u003c\/strong\u003e A fingerprint or metallic dust can permanently damage coatings at high power. Always inspect the protective window after any lens service.\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch3 id=\"faq\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1. Do I need an aspheric lens?\u003c\/strong\u003e\u003cbr\u003e\nFor heads ≥15 kW, an \u003cem\u003easpheric\u003c\/em\u003e collimating lens (and for 30 kW also the F300 focusing lens) helps maintain beam quality and stability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ2. Can I switch between D30 and D37?\u003c\/strong\u003e\u003cbr\u003e\nNo. The diameter must match the head design. Always follow the label or the size of your existing optics.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ3. Can I combine F100 collimation with F150 focusing?\u003c\/strong\u003e\u003cbr\u003e\nYes—collimating and focusing focal lengths are chosen together to achieve the target spot size and standoff; use the same combination as your OEM setup unless process changes are intended.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ4. What else should be checked or replaced?\u003c\/strong\u003e\u003cbr\u003e\nProtective window, nozzle, and ceramic ring. A contaminated window can quickly damage a new focusing lens.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3 id=\"cross\"\u003eRecommended accessories\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eProtective windows (QBH sizes matching your head)\u003c\/li\u003e\n  \u003cli\u003eNozzles (single\/double layer, conical\/straight)\u003c\/li\u003e\n  \u003cli\u003eCeramic rings \u0026amp; sensor cables\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Precitec","offers":[{"title":"D30 \/ F100 \/ Collimating (4kW)","offer_id":52579636019473,"sku":"PCT-D30-F100-COL-4kW","price":662.0,"currency_code":"USD","in_stock":true},{"title":"D30 \/ F125 \/ Focusing (4kW)","offer_id":52579636052241,"sku":"PCT-D30-F125-FOC-4kW","price":633.0,"currency_code":"USD","in_stock":true},{"title":"D30 \/ F150 \/ Focusing (4kW)","offer_id":52579636085009,"sku":"PCT-D30-F150-FOC-4kW","price":633.0,"currency_code":"USD","in_stock":true},{"title":"D30 \/ F200 \/ Focusing (4kW)","offer_id":52579636117777,"sku":"PCT-D30-F200-FOC-4kW","price":633.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F100 \/ Collimating (6kW)","offer_id":52579636150545,"sku":"PCT-D37-F100-COL-6kW","price":780.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F150 \/ Focusing (6kW)","offer_id":52579636183313,"sku":"PCT-D37-F150-FOC-6kW","price":670.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F200 \/ Focusing (6kW)","offer_id":52579636216081,"sku":"PCT-D37-F200-FOC-6kW","price":670.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F100 \/ Collimating (8kW)","offer_id":52579636248849,"sku":"PCT-D37-F100-COL-8kW","price":805.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F150 \/ Focusing (8kW)","offer_id":52579636281617,"sku":"PCT-D37-F150-FOC-8kW","price":725.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F200 \/ Focusing (8kW)","offer_id":52579636314385,"sku":"PCT-D37-F200-FOC-8kW","price":725.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F100 \/ Collimating (12kW)","offer_id":52579636347153,"sku":"PCT-D37-F100-COL-12kW","price":872.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F150 \/ Focusing (12kW)","offer_id":52579636379921,"sku":"PCT-D37-F150-FOC-12kW","price":805.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F200 \/ Focusing (12kW)","offer_id":52579636412689,"sku":"PCT-D37-F200-FOC-12kW","price":805.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F100 \/ Aspheric Collimating (15kW)","offer_id":52579636445457,"sku":"PCT-D37-F100-COL-AS-15kW","price":942.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F150 \/ Focusing (15kW)","offer_id":52579636478225,"sku":"PCT-D37-F150-FOC-15kW","price":866.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F200 \/ Focusing (15kW)","offer_id":52579636510993,"sku":"PCT-D37-F200-FOC-15kW","price":866.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F100 \/ Aspheric Collimating (20kW)","offer_id":52579636543761,"sku":"PCT-D37-F100-COL-AS-20kW","price":1012.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F150 \/ Focusing (20kW)","offer_id":52579636576529,"sku":"PCT-D37-F150-FOC-20kW","price":937.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F200 \/ Focusing (20kW)","offer_id":52579636609297,"sku":"PCT-D37-F200-FOC-20kW","price":937.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F250 \/ Focusing (20kW)","offer_id":52579636642065,"sku":"PCT-D37-F250-FOC-20kW","price":937.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F100 \/ Aspheric Collimating (30kW)","offer_id":52579636674833,"sku":"PCT-D37-F100-COL-AS-30kW","price":1382.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F150 \/ Focusing (30kW)","offer_id":52579636707601,"sku":"PCT-D37-F150-FOC-30kW","price":1302.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F200 \/ Focusing (30kW)","offer_id":52579636740369,"sku":"PCT-D37-F200-FOC-30kW","price":1302.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F250 \/ Focusing (30kW)","offer_id":52579636773137,"sku":"PCT-D37-F250-FOC-30kW","price":1340.0,"currency_code":"USD","in_stock":true},{"title":"D37 \/ F300 \/ Aspheric Focusing (30kW)","offer_id":52579636805905,"sku":"PCT-D37-F300-FOC-AS-30kW","price":1582.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0938\/9867\/0353\/files\/Precitec-Original-Collimating-Focusing-Lenses.png?v=1760955462"},{"product_id":"boci-collimating-focusing-lens-blt421s-blt310","title":"BOCI Original Collimating \u0026 Focusing Lens (BLT421S \/ BLT310)","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOriginal \u003cstrong\u003eBOCI\u003c\/strong\u003e optical lenses for BLT-series cutting heads, including \u003cstrong\u003eBLT421S\u003c\/strong\u003e and \u003cstrong\u003eBLT310\u003c\/strong\u003e. \nThese OEM lenses restore precise beam quality with a quick, drop-in replacement.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eGenuine BOCI parts; model-correct fit\u003c\/li\u003e\n  \u003cli\u003eDrop-in replacement; no head modification required\u003c\/li\u003e\n  \u003cli\u003eStable performance for piercing and cutting\u003c\/li\u003e\n  \u003cli\u003eProtected packing for safe international shipping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupported models\u003c\/td\u003e\n\u003ctd\u003eBLT421S, BLT310\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypes\u003c\/td\u003e\n\u003ctd\u003eCollimating lens \/ Focusing lens\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight (per variant)\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTax\u003c\/td\u003e\n\u003ctd\u003eTax-free item\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIn the box\u003c\/td\u003e\n\u003ctd\u003eLens ×1; protective packing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003ePower off and cool down the cutting head.\u003c\/li\u003e\n  \u003cli\u003eClean the lens seat and ensure dust-free handling.\u003c\/li\u003e\n  \u003cli\u003eInstall the new lens; confirm correct orientation and sealing.\u003c\/li\u003e\n  \u003cli\u003eRun focus\/piercing calibration according to the BOCI 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