N-BK7/H-K9L
N-BK7 is a RoHS-compliant borosilicate crown glass. It has excellent transmission in the visible and near IR portions of the
spectrum (350 nm - 2.0 µm). N-BK7 is probably the most common optical glass used in high-quality optical components. N-BK7 is a
hard glass that can withstand a variety of physical and chemical stressors. It is relatively scratch and chemical resistant. It
also has a low bubble and inclusion content, making it a useful glass for precision lenses. The index of refraction of N-BK7 is
1.517 at 587.6 nm.
Optical materials comparison:
| Material |
N-BK7/H-K9L or other optical glass |
| Diameter |
1-250 mm |
| Thickness |
0.4-50mm |
| Height Tolerance |
+0.0 / -0.1 mm |
| Focal Length Tolerance |
+/-1% |
| Centration |
3 Arc Min |
| Surface Flatness |
L/4 |
| Surface Quality |
60/40 |
| Clear Aperture |
>95% |
| Coating |
Customer request |
Other Items
Factory information
Yutai Optics, we specialize in the design and volume manufacturing of high performance optical components such as lens,prisms, windows,filters,mirrors and more for use in optical instruments and laser systems, as well as for telecommunications,medical, environment monitoring industry,material is widely ranged from optical glass to IR and UV glass.
As a Fast-growing supplier in Optics, Yutai Optics offers excellent service and good quality items,our products have been appreciated by many European and American customers,of course we build a long-term cooperation.YuTai Optics has quickly established itself as a leader in optical components from its advanced technology and quality control.
Our Advantage
Sales Team
Yutai Optics has a professinal sales team with excellent service, we tracking from inquiry to delivery of items.We try our best to meet each customers'request.
Production Team
Yutai Optics has many experienced engineers and advanced machines, they are the important guarantee for the higher quality products.Our advanced production machines list:
Ring polishing machine, Single axis machine, Two axis machine, Four axis machine,Centering edging machine,Mechanical milling machine,Spectrograph, Grinding machine,nanotech.250upl,talysurfi120.
Inspection Team
Advanced testing equipment and methods are important guarantee for the production of high-precision products.Our testing machine is ZYGO, Stereo interferometer,Horizontal interferometer.We provide testing report for each batch for your items.
Process for most optics
Material-cutting-rounding-milling-grinding-polishing-edging-cleaning-coating-gluing-edging-blacking-accembly-packing-shipping
Packaging & Shipping
1 Package Detail: A. Standard carbon and envelop with plastic foam.
B. Safety green carton.
C. Customized.
2 Delivery Detail: Within 30 days.(Also depand on the quantity)
Payment:
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