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Place Of Origin: China
Diameter:: 3-300mm+-0.05mm
Center Thickness Tolerance: +-0.05mm
Parallel Error: ≤3min
Surface Accuracy: λ/10@
Effective Caliber: 90%
Focal Length Tolerance: +-1%
Surface Quality: 40-20 scratch & dig
Working Wavelength: customer inquirement
Material: BK7, FS, UVFS, CaF₂, ZnSe
Product Name:: bi concave lens
Transportation: Ocean,Land,Air,Express,Others
Supply Ability: 5000 pieces per month
Port: Shanghai,Shenzheng,Xiaan
Payment Type: T/T,L/C,Paypal,Western Union
Incoterm: FOB,CFR,CIF,EXW
K9 Meniscus Lens Optical Lens for sale
Positive meniscus lens is a kind of meniscus lens. Its shape is similar to concave Convex Lens, but the meniscus lens is composed of two spherical surfaces with small radius of curvature and little difference in values. Meniscus lens is a concave convex inducer used in CO2 laser and infrared optical system. Concave convex lens can reduce spherical aberration and produce the minimum collimated light focus. The positive meniscus lens is used to reduce the focal length of another lens while maintaining the angular resolution of optical components. Its materials include BK7, UV fused quartz, CaF2, ZnSe, etc.
Material: K9, BK7, FS, UVFS, CaF₂, ZnSe
Diameter:3mm-200mm±0.05mm
Center Thickness Tolerance:±0.05mm
Lens Alignment Error:≤3min
Surface Accuracy:λ/ 10 @
Surface Quality:40/20. 60/40. 80/60
Effective Caliber: 90%
Example with BK7 material:These N-BK7 Meniscus lens are available uncoated or with one of five antireflection coatings (-A, -AB, -B, -C, or -D), which reduces the amount of light reflected from each surface of the lens (see the Selection Guide table below for coating option). Since approximately 4% of the incident light is reflected at each surface of an uncoated substrate, the application of an AR coating improves transmission, which is important in low-light applications, and prevents the undesirable effects (e.g., ghost images) associated with multiple reflections. Having optics that are AR coated on both surfaces is particularly desirable for applications utilizing multiple optical elements. Please see the Graphs tab for additional coating information.
N-BK7 Meniscus lens Selection Guide
Coating name wavelength band Uncoated Uncoated A Coating 350nm-700nm AB Coating 400nm-1100nm B Coating 650nm-1050nm C Coating 1050-1700nm D Coating 1650nm-3000nm
Other series products:
Concave Lens Achromatic Lens Ball Lens Silicon Window Zinc Selenide Window Meniscus lens
Product Categories : Spherical Lenses > Meniscus Lens
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.