Optical Hoya Glass CD Filters

>>Product DescriptionThe dome lens/hemisphere dome we manufactured be used to protect the lens of underwater camera,which could resist the pressure of water,and give a best view field to catch picture.
Specification of hemisphere dome we could supplied as follow:
Materials:BK7 glass,UV fused silica etc., various types of optical glass.
Diameter: from 10 to 250 mm.
Diameter Tolerance: 0.1 mm, standard; 0.01 mm - attainable.
Surface Quality: 60/40 Scratch/Dig ,standard;20/10 Scratch/Dig, attainable depending on material type and combination of other parameters.
Power/Irregularity: 5/1 (interference fringes),standard; 0.5/0.1 (interference fringes), attainable depending on material type and combination of other parameters. Aperture 60 deg.
Decentration: 0.05mm,standard; 0.01 ,attainable.+Picture show of our filter>> 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.
>>FAQ
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·We'd like to supply samples for free if we have it in stock, but we don't pay freight.
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·Regarding inventory, it is 3 working days;
·For customized one, it's about 15-25 working days, depended on exact quantity and order date.
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·Yes, to customize special optical element and coating are available here.
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·T/T, Alibaba online assurance payment, MoneyGram, West Union, Paypal and so on.
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·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.
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·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.