Achromatic Lens is an achromatic consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. Doublets can come in many forms, though most commercial doublets are achromats, which are optimized to reduce chromatic aberration while also reducing spherical aberration and other optical aberrations.
Q: 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.
Every details of production and communication is crucial for us, please do feel free to tell us any your question, suggestion or comment on us, it will be very helpful for us to be a worthy, trusted and reliable supplier. Thank you for visiting and stoping!
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