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Product Name: Bk7 Optical Glass Achromatic Lens Glued Lenses Model NO.: VY006 Coating: Ar, Hr, Ht Customized: Customized Certification: RoHS, ISO9001, CE Lenses Color: Clear Material: Optical Glass Shape: Achromatic Lens Transmittance: >95% Type: Achromatic Lens Usage: Lighting, Medical, Optical, Photography Diameter: +/-0.05mm Trademark: VY or OEM Transport Package: as Request Specification: ISO 9001: 2008, RoHS Origin: China HS Code: 9001909090 Product Description >> Product Description Achromatic Lenses/cemented lenses/glued lenses/doulets are achromatic consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. The elements are chosen so as to cancel chromatic aberration at two well-separated wavelengths, usually in the blue and red region of the spectrum. Focal length is constant at those two wavelengths and focal length shifts are virtually eliminated across the visible wavelengths. One frequent use is to achieve diffraction limited focusing of a laser beam. Negative Achromats are typically used when there is a need to eliminate chromatic aberration. In addition to reducing chromatic aberration at the design wavelengths, spherical aberration and coma are greatly reduced. VY Optics Photoelectric Technology Co., Ltd. Supply all kinds of achromatic lens as per your requested.>> SpecificationSpecification of our achromatic lens as follow:*Material: BK7 and ZF2(or according to your request)*Dia.: +0/-0.05*Center thickness tolerance: +/-0.1*Surface quality: 60-40 Scrath/Dig*Surface figure: 0.5-0.2*Centration < 3arc min*Chamfer: 0.1-0.25*45 degrees*Design wavelength: 486.1mm, 587.6mm, 656.3mm(the parameter is demision of nomal lens, so specification will be changed according to different demision and material)diameter+0/-0.05mmmaterialBK7,ZF2 or other optical glasssurface quality60-40surface figure0.5-0.2centration<3 arc minchamfer0.1-0.25mm*45degree>> Company Introduction>>Related Products VY Optics could also manufacture and design other optical elements, includingachromatic lens,dome lens,filter,prism,ball lens,cylindrical lens,optical mirrors,spherical lensandrod lens, we can fabricatehigh-precision lensas per your requested.>>FAQQ:Do you provide samples? Is it free or charged?·We'd like to supply samples for free if we have it in stock, but we don't pay freight.Q:How long is your delivery time?·Regarding inventory, it is 3 working days;·For customized one, it's about 15-25 working days, depended on exact quantity and order date.Q:Is it possible to customize special lens?· Yes, to customize special optical element and coating are available here.Q:How to pay?·T/T, Alibaba online assurance payment, MoneyGram, West Union, Paypal and so on.Q:How to ensure the safety of payment?· VY Optics is a reliable supplier not only audited on Alibaba, but also on Made-in-China, reputation and quality is life of our company, and we support Alibaba Trade Assurance.Q:How do you ship goods?·Low value sample: EUB, E Express of China Post, which is cheap;·Light weight parcel: DHL, FedEx, TNT, UPS, EMS, SF Express, China Post;·Heavy cargo: by air or by sea, ship on pallet.Our company enjoy a considerable discount owing to long-term cooperation with courier company.
