Optical BK7 Glass Window
| property |
specification |
| transmission range |
0.4µm to 2.5µm |
| density |
2.51 g/cc |
| thermal expansion |
7.1x10-6 /°k @ -30° + 70°c, & 8.3x10-6 /°k @ 20°c to 300° |
| surface finish |
bk-7 polishes extremely well & polishes of 10-5, or 20-10 scratch-dig are achieved at extra costs respectively, mainly for uv & visible applications. |
| surface figure |
surface figure of 1/10 wave to 1/4 wave @ 0.6328µm are specified mostly on lenses for ultraviolet & visible use. |
| ar coating options |
ar @ 0.8-2.5µm, ar @ 1.064, ar @ visible wavelength. |
| typical applications |
astronomical, thermal imaging |
| products manufactured |
lenses, windows, wedges, prism, beamsplitters, filters. |
The is a 5.0 mm in diameter and 1.0 mm thick Calcium Fluoride window. Calcium fluoride has a wide spectral range with high transmission (above 90%) between 0.25 μm and 7 μm, making it an excellent choice for deep UV to IR applications. CaF2 is also an ideal choice for excimer laser optics due to its low absorption and high damage threshold. For selected applications CaF2 can also be used without an anti-reflective coating as it has a low index of refraction leading to a low refracted light from the second surface.
Optical Parameters:
| Material |
Vacuum UV Grade Calcium Fluoride |
| Antireflection Coating |
Uncoated |
| Surface Flatness |
λ/2 @ 632.8 nm |
| Surface Quality |
40-20 scratch-dig |
| Diameter/Thickness Tolerance |
± 0.1 mm |
| Parallelism |
< 1 arc minute |
| Clear Aperture |
Central 90% of diameter |
| Wavelength Range |
250-7000 nm |
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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