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Model No.: M2
Brand: Hengpu
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
Productivity: 50000Pc/month
Transportation: Ocean,Land,Air,Express,Others
Place of Origin: China
Supply Ability: 5000 pieces per month
Certificate: ISO9001-2008
HS Code: 70031200
Port: Shanghai,Shenzheng,Xiaan
Payment Type: T/T,L/C,Paypal,Western Union
Incoterm: FOB,CFR,CIF,EXW
BK7 Meniscus Lens Optical Lens
The positive meniscus lens is composed of two curved surfaces with similar radius of curvature and has positive focal length. It is usually used to reduce the focal length of another lens, increase the numerical aperture and other related applications. In order to reduce the spherical aberration, in the application of beam expansion or beam contraction or divergent collimation light, the light beam should be incident on the L inducer door surface: the light beam should be incident on the concave surface when collimated by dry convergence.
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
Hanzhong Hengpu Photoelectric technology Co., Ltd. Our company has been established for 8 years specialized in the production of optical lenses, various lenses, cylindrical mirrors and other high-precision optical components for projector lenses and camera lenses. , Car lenses, infrared imaging lenses and other fields. And the boss is a technical expert with more than 20 years in this industury. We support OEM, ODM, OBM. and provide the high-quality products while cutting costs, to meet the diverse needs of different customers.
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.
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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.