Fuzhou Jiuyi Optics Co., Ltd.  

Product Name: N-Bk7 Glass/Schott/Optical Achromatic/Cemented Doublet Lens Model NO.: JY-L20 Customized: Customized Certification: RoHS, ISO9001 Lenses Color: Clear Material: Optical Glass Shape: Double Lens Transmittance: >95% Type: Achromatic Lens Usage: Lighting, Medical, Optical, Photography Diameter: 2-120mm Diameter Tolerance: +0/-0.05 Thickness Tolerance: +/-0.05mm Surface Quality: 10-5 Surface Flatness: Lamda/4 Centration: <=3 Arc Min. Clear Aperture: >90% of Diameter Transport Package: Carton /Blister Box Origin: China HS Code: 9001909090 Product Description Anachromatic lensorachromatis alensthat is designed to limit the effects ofchromaticandspherical aberration. Achromatic lenses are corrected to bring two wavelengths (typically red and blue) into focus on the same plane.The most common type of achromat is theachromaticdoublet, which is composed of two individual lenses made fromglasseswith different amounts ofdispersion. Typically, one element is a negative (concave) element made out offlint glasssuch as F2, which has relatively high dispersion, and the other is a positive (convex) element made ofcrown glasssuch as BK7, which has lower dispersion. The lens elements are mounted next to each other, often cemented together, and shaped so that the chromatic aberration of one is counterbalanced by that of the other. AchromaticlensMaterialOptical Glass (CDGM H-K9L, Schott N-BK7 ETC.)Surface Flatnessλ/4 @632.8nmSurface Quality10-5, 20-10 , 40-20, 60-40, 80-50Centration Error≤3 arc min.Diameter Tolerance+0.0/-0.05mmThickness Tolerance±0.05mmFocal Length Tolerance±2%Clear Aperture>90% of diameterChamferProtectiveCoatingUncoated, or AR coatingOur company was founded by a group of dedicated experts who have been in optical business for more than 20 years. We, here at JIUYI Optics specialize in the manufacturing of laser level optical components for Device manufacturer and Research Institute around the world.As an ISO registered company, JIUYI Optics has consistently focused on increasing the level of design and manufacture on lens, windows, prisms, mirrors, optical filters, beamsplitters, and coatings, especially for spherical lens. Also, we own perfect CCTV lens assembly under the supports of the class 100,000 dust-free assembly workshop. Furthermore, OEM business is accepted.Our goal is satisfy our customers with superior quality, fast and reliable delivery, competitive price so that each customer can feel confident in using our parts in their applications. These features are what sets JIUYI apart from other optical manufacturers, and that is why our customers reply on JIUYI Optics as their long- term optics partner.FACTORYOUR PRODUCTSWORKSHOPINSPECTIONCOATINGLogisticsFAQ:Question: Is it possible to provide customized lenses?Yes, it is. Just please send us the drawings or detailed requirements for evaluation.Question: Do you offer some samples for free?Yes, we do if we have stock.Question: What is your delivery time?2-3 weeks for standard order.Question: What is the terms of payment?T/T is advised, and Net 15 days is accepted for stable orders.Question: How do you dispatch the parcels?UPS, TNT, Fedex, and EMS are the transport companies what we have been cooperating for many years, or please provide customer's appointed forwarder.