{"title":"Negative Meniscus Lens, N-BK7, AR Coating: 400 nm-700 nm","description":"\u003cp\u003eBrowse 9+ lbtek - negative meniscus lens, n-bk7, ar coating: 400 nm-700 nm 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-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_b5b3bb80-69e5-4cb8-8300-cac17e42751e.jpg?v=1777788505","url":"https:\/\/waveqvanta.com\/collections\/lbtek-optics-l4-negative-meniscus-lens-n-bk7-ar-coating-400-nm-700-nm.oembed","provider":"WaveQuanta","version":"1.0","type":"link"}