{"title":"Optics - Negative Meniscus Lenses","description":"\u003cp\u003eBrowse 11+ 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":"negative-meniscus-lens-n-bk7-uncoated-350-nm-2-0-μm-mmp10615","title":"Negative Meniscus Lens, N-BK7, Uncoated: 350 nm-2.0 μm MMP10615","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, Uncoated: 350 nm-2.0 μm — Model MMP10615\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -150.0 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-2.0 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander,convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe plano-convex lenses from LBTEK feature one convex surface and one flat surface, providing positive focal lengths typically used for beam reduction, focal length shortening, or imaging magnification applications. To minimize spherical aberration, when a plano-convex lens is used for focusing a collimated beam, the beam should be incident on the curved surface; when collimating a point source, the beam should be incident on the flat surface. LBTEK manufactures these lenses using N-BK7, the most common optical material for visible light and near-infrared applications. The 780V coating offers lower reflectivity at the operating wavelength and higher damage thresholds, making it ideal for diode lasers and applications where light passes through complex optical systems. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus 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-2.0 μm (uncoated);\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518088331418,"sku":"MMP10615","price":44.26,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/1-1_E8_B4_9F_E5_BC_AF_E6_9C_88_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-FlE0YNXy1t6s-2CTT55-5XvS6NPM.jpg?v=1772677132"},{"product_id":"negative-meniscus-lens-n-bk7-uncoated-350-nm-2-0-μm-mp10615","title":"Negative Meniscus Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted MP10615","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, Uncoated: 350 nm-2.0 μm, Unmounted — Model MP10615\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 350 nm-2.0 μm, focal length -150.0 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-2.0 μm (uncoated)\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander,convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe plano-convex lenses from LBTEK feature one convex surface and one flat surface, providing positive focal lengths typically used for beam reduction, focal length shortening, or imaging magnification applications. To minimize spherical aberration, when a plano-convex lens is used for focusing a collimated beam, the beam should be incident on the curved surface; when collimating a point source, the beam should be incident on the flat surface. LBTEK manufactures these lenses using N-BK7, the most common optical material for visible light and near-infrared applications. The 780V coating offers lower reflectivity at the operating wavelength and higher damage thresholds, making it ideal for diode lasers and applications where light passes through complex optical systems. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus 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-2.0 μm (uncoated);\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518088429722,"sku":"MP10615","price":28.07,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E6_9C_AA_E9_95_80_E8_86_9C_EF_BC_8C350_20nm-2.0_20_CE_BCm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FtrxlOjhlTDnN3Lod.jpg?v=1772677137"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mmp10615-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm MMP10615-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm — Model MMP10615-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, focal length -150.0 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7;\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm;\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518088462490,"sku":"MMP10615-A","price":57.83,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/1-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm-FpIbJEoKCRmv82Vy4hwPyLB_ayXP.jpg?v=1772677142"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mp10623-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted MP10623-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted — Model MP10623-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, focal length -1000.0 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518088560794,"sku":"MP10623-A","price":42.02,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FgjklEyK-ZtWlXcw06cDmL.jpg?v=1772677147"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mp10621-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted MP10621-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted — Model MP10621-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, focal length -500.0 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518088593562,"sku":"MP10621-A","price":42.96,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FgjklEyK-ZtWlXcw06cDmL_ab434472-41ed-4905-9ed1-937776e2b052.jpg?v=1772677152"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mp10620-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted MP10620-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted — Model MP10620-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, focal length -400.0 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518088724634,"sku":"MP10620-A","price":42.02,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FgjklEyK-ZtWlXcw06cDmL_75b15ccf-89bd-405b-b293-356361df7edb.jpg?v=1772677157"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mp10619-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted MP10619-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted — Model MP10619-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, focal length -300.0 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518088855706,"sku":"MP10619-A","price":42.02,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FgjklEyK-ZtWlXcw06cDmL_100e2ba5-40d3-4c0a-9747-14be7eb218fd.jpg?v=1772677162"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mp10618-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted MP10618-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted — Model MP10618-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, focal length -250.0 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518089019546,"sku":"MP10618-A","price":40.91,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FgjklEyK-ZtWlXcw06cDmL_11fb2618-3b81-48f9-8039-87b7cfc9233c.jpg?v=1772677167"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mp10614-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted MP10614-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted — Model MP10614-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, focal length -125.0 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518089117850,"sku":"MP10614-A","price":40.91,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FgjklEyK-ZtWlXcw06cDmL_847bc87e-c1aa-4906-b283-55603baf8cc2.jpg?v=1772677173"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mp10613-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted MP10613-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted — Model MP10613-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518089216154,"sku":"MP10613-A","price":43.51,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FgjklEyK-ZtWlXcw06cDmL_ac0a2183-a5ab-45a3-b078-edc4ec47bb69.jpg?v=1772677177"},{"product_id":"negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm-mp10615-a","title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted MP10615-A","description":"\u003ch2\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted — Model MP10615-A\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eOperating wavelength 400 nm-700 nm, focal length -150.0 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: 400 nm-700 nm (AR Coating);\u003c\/li\u003e\n\u003cli\u003eApplication: imaging, beam expander or reducer, convergence;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe negative meniscus lens from LBTEK consists of two surfaces with similar radii of curvature (the concave surface having a smaller radius than the convex surface), resulting in a negative focal length. Typically used for beam expansion\/reduction, focal length extension, or numerical aperture reduction, this lens minimizes spherical aberration when the convex surface faces incident light during beam expansion\/collimation or divergent light applications, while the concave surface should face incident light for converging beam collimation. Both surfaces are coated with 400-700 nm AR coatings to reduce surface reflectivity. While N-BK7 is the most common lens material for visible light and near-infrared applications, LBTEK manufactures these lenses using both N-SF11 and N-BK7 materials for diverse optical requirements. All lenses undergo precision machining and strict quality control, ensuring LBTEK delivers high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eNegative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm, Unmounted\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: N-BK7\u003c\/li\u003e\n\u003cli\u003eOperating Wavelength: 400 nm-700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518089281690,"sku":"MP10615-A","price":42.02,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm_EF_BC_8C_E6_9C_AA_E5_AE_89_E8_A3_85-FgjklEyK-ZtWlXcw06cDmL_c5f11f51-046e-4915-a129-83df8bc5b33c.jpg?v=1772677183"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/collections\/1-1_E8_B4_9F_E5_BC_AF_E6_9C_88_E9_80_8F_E9_95_9C_EF_BC_8CN-BK7_EF_BC_8C_E5_A2_9E_E9_80_8F_E8_86_9C_EF_BC_9A400_20nm-700_20nm-FpIbJEoKCRmv82Vy4hwPyLB_ayXP.jpg?v=1777788435","url":"https:\/\/waveqvanta.com\/collections\/lbtek-optics-negative-meniscus-lenses.oembed","provider":"WaveQuanta","version":"1.0","type":"link"}