{"title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm","description":"\u003cp\u003eBrowse 13+ plano-concave lenses from WaveQuanta's catalog. Part of our precision optical components and lenses range. Detailed specifications, datasheets, and 3D models available for each product. Request a quote today.\u003c\/p\u003e","products":[{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-mcc10305","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm MCC10305","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm — Model MCC10305\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -25.0 mm, Ø12.7 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLBTEK Plano-Concave Lenses have a negative focal length and are commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK come pre-installed with standard lens tubes or lens mounting adapters. These mechanical components are engraved with product model, type, diameter, and focal length for easy identification of lens parameters by users.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517942612122,"sku":"MCC10305","price":37.38,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/1-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm-FirU3KkmiAixoPh-Gh20mT-5T8zY.jpg?v=1772672330"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-mcc10307","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm MCC10307","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm — Model MCC10307\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -30.0 mm, Ø12.7 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLBTEK Plano-Concave Lenses have a negative focal length and are commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK come pre-installed with standard lens tubes or lens mounting adapters. These mechanical components are engraved with product model, type, diameter, and focal length for easy identification of lens parameters by users.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517942677658,"sku":"MCC10307","price":37.38,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/1-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm-FirU3KkmiAixoPh-Gh20mT-5T8zY_fea48a8d-6872-481a-8962-7f05fa6b4236.jpg?v=1772672335"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-mcc10310","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm MCC10310","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm — Model MCC10310\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -50.0 mm, Ø12.7 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLBTEK Plano-Concave Lenses have a negative focal length and are commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK come pre-installed with standard lens tubes or lens mounting adapters. These mechanical components are engraved with product model, type, diameter, and focal length for easy identification of lens parameters by users.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517942743194,"sku":"MCC10310","price":37.38,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/1-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm-FirU3KkmiAixoPh-Gh20mT-5T8zY_5ca61b36-6dc9-48e8-85fe-d6db43cc8605.jpg?v=1772672340"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-mcc10610","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm MCC10610","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm — Model MCC10610\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -50.0 mm, Ø25.4 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLBTEK Plano-Concave Lenses have a negative focal length and are commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK come pre-installed with standard lens tubes or lens mounting adapters. These mechanical components are engraved with product model, type, diameter, and focal length for easy identification of lens parameters by users.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517942841498,"sku":"MCC10610","price":41.47,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/1-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm-FirU3KkmiAixoPh-Gh20mT-5T8zY_e35b8771-e3b9-420a-81f9-05e59dcd10ea.jpg?v=1772672346"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-mcc10612","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm MCC10612","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm — Model MCC10612\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -75.0 mm, Ø25.4 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLBTEK Plano-Concave Lenses have a negative focal length and are commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK come pre-installed with standard lens tubes or lens mounting adapters. These mechanical components are engraved with product model, type, diameter, and focal length for easy identification of lens parameters by users.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517942939802,"sku":"MCC10612","price":41.47,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/1-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm-FirU3KkmiAixoPh-Gh20mT-5T8zY_e4ca7faa-67cf-4a83-95a5-dccf7f3899b0.jpg?v=1772672351"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-mcc10613","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm MCC10613","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm — Model MCC10613\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -100.0 mm, Ø25.4 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLBTEK Plano-Concave Lenses have a negative focal length and are commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK come pre-installed with standard lens tubes or lens mounting adapters. These mechanical components are engraved with product model, type, diameter, and focal length for easy identification of lens parameters by users.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517943038106,"sku":"MCC10613","price":41.65,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/1-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm-FirU3KkmiAixoPh-Gh20mT-5T8zY_18ae9b18-0cd7-4c54-91e5-dc9b16e0b142.jpg?v=1772672356"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-cc10024","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted CC10024","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted — Model CC10024\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -24.0 mm, Ø6.0 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003cli\u003ePre-installed mechanical housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LBTEK plano-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK can be mounted in LBTEK standard lens tubes, fixed lens holders, and various coaxial mounting plates. Customers can choose the optimal mounting method based on different application scenarios.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517943136410,"sku":"CC10024","price":32.91,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtKUl4eHeNRxi1CXn-KCdG_FX1.jpg?v=1772672361"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-cc10305","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted CC10305","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted — Model CC10305\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -25.0 mm, Ø12.7 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003cli\u003ePre-installed mechanical housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LBTEK plano-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK can be mounted in LBTEK standard lens tubes, fixed lens holders, and various coaxial mounting plates. Customers can choose the optimal mounting method based on different application scenarios.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517943234714,"sku":"CC10305","price":24.73,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtKUl4eHeNRxi1CXn-KCdG_FX1_69162533-e34f-4a7f-88bb-463b177347d9.jpg?v=1772672366"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-cc10307","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted CC10307","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted — Model CC10307\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -30.0 mm, Ø12.7 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003cli\u003ePre-installed mechanical housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LBTEK plano-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK can be mounted in LBTEK standard lens tubes, fixed lens holders, and various coaxial mounting plates. Customers can choose the optimal mounting method based on different application scenarios.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517943300250,"sku":"CC10307","price":24.73,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtKUl4eHeNRxi1CXn-KCdG_FX1_6f4eafd2-b493-4c19-af44-c6d0be353918.jpg?v=1772672372"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-cc10610","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted CC10610","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted — Model CC10610\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -50.0 mm, Ø25.4 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003cli\u003ePre-installed mechanical housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LBTEK plano-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK can be mounted in LBTEK standard lens tubes, fixed lens holders, and various coaxial mounting plates. Customers can choose the optimal mounting method based on different application scenarios.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517943398554,"sku":"CC10610","price":28.81,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtKUl4eHeNRxi1CXn-KCdG_FX1_9cc2fdb1-edfd-4816-9551-ecc5ea1a9cbe.jpg?v=1772672376"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-cc10310","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted CC10310","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted — Model CC10310\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -50.0 mm, Ø12.7 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003cli\u003ePre-installed mechanical housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LBTEK plano-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK can be mounted in LBTEK standard lens tubes, fixed lens holders, and various coaxial mounting plates. Customers can choose the optimal mounting method based on different application scenarios.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517943595162,"sku":"CC10310","price":25.1,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtKUl4eHeNRxi1CXn-KCdG_FX1_26dde6b2-3d10-461b-838b-8ae0fc03322b.jpg?v=1772672381"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-cc10612","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted CC10612","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted — Model CC10612\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -75.0 mm, Ø25.4 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003cli\u003ePre-installed mechanical housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LBTEK plano-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK can be mounted in LBTEK standard lens tubes, fixed lens holders, and various coaxial mounting plates. Customers can choose the optimal mounting method based on different application scenarios.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517943693466,"sku":"CC10612","price":28.81,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtKUl4eHeNRxi1CXn-KCdG_FX1_a39113d3-4596-4c3c-a068-de817aa0e7e3.jpg?v=1772672386"},{"product_id":"plano-concave-lens-n-bk7-uncoated-350-nm-2-0-μm-cc10613","title":"Plano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted CC10613","description":"\u003ch2\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted — Model CC10613\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -100.0 mm, Ø25.4 mm, substrate N-BK7.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA plano-concave lens has one concave surface and one flat surface, with a negative focal length. It is commonly used for beam collimation, increasing (or decreasing) focal length, or expanding (or reducing) image size. To minimize spherical aberration, when the incident beam is collimated, it should be directed onto the concave surface of the plano-concave lens.\nN-BK7 is the most common lens material, widely used in visible and near-infrared applications. In addition to N-BK7 plano-concave lenses, LBTEK also offers N-SF11, UV fused silica, and calcium fluoride plano-concave lenses. Due to its lower Abbe number, N-SF11 is often used to produce lenses with shorter focal lengths. UV fused silica exhibits excellent transmittance in the ultraviolet range and a low coefficient of thermal expansion, while calcium fluoride has an extremely high damage threshold and chemical inertness.\nLBTEK provides uncoated plano-concave lenses as well as lenses with three types of anti-reflection coatings: 400-700 nm, 700-1100 nm, and 1100-1650 nm. All our lenses undergo precision machining and strict quality control to ensure that LBTEK delivers high-quality lens products at reasonable prices.\u003c\/p\u003e\n\u003ch3\u003ePlano-Concave Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 350 nm-2 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: Imaging, beam expansion or reduction\u003c\/li\u003e\n\u003cli\u003ePre-installed mechanical housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LBTEK plano-concave lens has a negative focal length and is commonly used in applications such as imaging or beam collimation. LBTEK plano-concave lenses are manufactured using N-BK7 glass that complies with RoHS standards. N-BK7 is the most commonly used material for high-quality optical components, primarily applied in visible and near-infrared fields. All circular lenses from LBTEK can be mounted in LBTEK standard lens tubes, fixed lens holders, and various coaxial mounting plates. Customers can choose the optimal mounting method based on different application scenarios.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47517943791770,"sku":"CC10613","price":28.81,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtKUl4eHeNRxi1CXn-KCdG_FX1_653ce251-add5-45ef-9ad9-b7cb9df8b302.jpg?v=1772672392"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/collections\/2-1_E5_B9_B3_E5_87_B9_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_9A350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtKUl4eHeNRxi1CXn-KCdG_FX1.jpg?v=1777788512","url":"https:\/\/waveqvanta.com\/collections\/lbtek-optics-l4-plano-concave-lens-n-bk7-uncoated-350-nm-20-m.oembed","provider":"WaveQuanta","version":"1.0","type":"link"}