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Product description
Product Description
Double-Concave Lenses
Double-Concave (DCV) Lenses have two inward curved surfaces and a negative focal length. They are used for image reduction and to spread light.
Diameter Tolerance
+0.0/-0.05mm
Center Thickness Tolerance
±0.2mm
Focal Length Tolerance
±2%
Surface Quality
60/40, 40/20 or better..
Material
BK7/K9
Clear Aperture
>90%
Centering
<1 arc min
Coating
Custom
Bevel
Protective bevel as needed
Related Products
Plano convex lenses
Plano concave lenses
Biconvex lenses
Certificate
                        ISO9001
                          CE
                          RoHS
Packing&Shipping
Company Introduction
Shenyang Ebetter Optics Co.,Ltd. is a professional manufacturer of precision optical components and optical lens, diffraction grating manufacture. Since the company was established, it has been committed to the research and production and sales. We can carry out the optical system design and production of related accessories,and moreover we have already got import and export rights. nowadays products have been sold to many countries and regions,and established long-term good relations of cooperation with the optical companies of United States,Canada,the European Union and other countries. We get a good reputation with quality products.
FAQ
Q1. Are you a factory?
A1. Yes, we are a professional optical lens manufactruer in China, and have a factory in Changchun city, Jilin province.

Q2. What is the MOQ of optical lens?
A2. No MOQ for customer if optical lens is in stock.

Q3: Can I customize the products based on my need?
A3.Yes, we can customize the material, specifications and optical coating for your optical components based on your needs.

Q4. How can I get sample from you?
A4. Just send us your requirements, then we will send samples accordingly.

Q5. How many days will samples be finished? How about mass products?
A5. Generally, we need 1~2 days to finish the sample production. As for the mass products, it depends on your order quantity.

Q6. What's the deliver time?
A6. (1) For inventory: the delivery time is 5 workdays.
(2) For customized products: the delivery time is 7 to 25 workdays. According to the quantity.

Q7. How do you control lens quality?
A7. Producing process is in vacuum dust-free shop, like prepare material, mixed material and take out . Four times quality
checking during production process.

Q8. How about your optical lens production ability per day?
A8. About 20000 pairs/day.
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