Factory manufacture optical polished telescope cemented lens with NIR coating for telescope
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- Supplier: Haian Subei Optical Glass Factory
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Product Overview
Description
Factory manufacture optical polished telescope cemented lens with NIR coating for telescope
Product Description
Technique index sign :
| Diameter (mm): | 30.00 | Back Focal Length BFL (mm): | 47.82 |
| Effective Focal Length EFL (mm): | 50.00 | Coating: | Uncoated |
| Substrate: | N-BK7 | Surface Quality: | 40/20-60/40 |
| Centering (arcmin): | <1 | Bevel: | Protective bevel as needed |
| Edge Thickness ET (mm): | 2.00 | Radius R1=-R2 (mm): | 50.56 |
| Clear Aperture CA (mm): | 29.00 | Focal Length Tolerance (%): | ±1 |
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FAQ
FAQ:
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, West Union, Paypal and so on.
Q: How to ensure the safety of payment?
· Subei Optics is a gold supplier on Alibaba, reputation and quality is life of our company, and we support Alibaba Trade Assurance.
Q: How do you ship goods?
· Low value sample: EMS 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.
Welcome to contact us for more details ,most competitive price for you !
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