Various Size Transparent Sapphire Optical Window For Protective
Equipment
The window is a flat plate with two parallel or wedge-shaped
surfaces, and is usually used as a protective window for electronic
sensors or external environment detectors. The window does not
change the magnification of the system. Substrate materials include
various sapphire, optical glass, K9, ultraviolet fused silica,
infrared fused silica, and calcium fluoride (CaF2), magnesium
fluoride (MgF2), zinc selenide (ZnSe), germanium (Ge), silicon (Si)
And other crystal materials, and provide various optical coatings
such as anti-reflection coatings, high-reflection coatings,
spectroscopic coatings, and metal coatings. Broadband
antireflection coatings can be used in the ultraviolet, visible,
near-infrared and mid-infrared bands.
The sapphire window is a flat polished product based on single
crystal sapphire processing. The sapphire protective window is a
special window that uses the pressure, abrasion, and high
temperature characteristics of sapphire to protect the observer,
the inside of the instrument and the inside of the container.
Single crystal sapphire windows are very suitable for demanding
applications (such as laser systems) because of their extremely
high surface hardness, high thermal conductivity, high dielectric
constant, and resistance to chemical acids and alkalis. Since the
hardness of sapphire is second only to diamond, and its structural
strength is very high, the thickness of the sapphire window made by
enhanced light transmittance is thinner than that of the general
high-dielectric window. In terms of chemistry, sapphire is a single
crystal of aluminum oxide (Al2O3), which is very suitable for
transmission between 0.2 and 5.5 μm. In general optical
applications, the basic needs of customers can be met without
coating. Our products can also be coated, silk-screened or special
heat treated according to customer needs to meet the special needs
of customers.
Has ultra-high surface hardness and chemical resistance
Can transmit wavelengths between UV and mid-infrared
Thinner and stronger than standard glass windows
Product shapes are divided into: round, rectangular, stepped and
various machinable shapes.
The product size range is: diameter (maximum diagonal) 10-500mm,
thickness 0.3-100mm.
Product finish after polishing: 80/50, 60/40, 40/20, 20/10, 10/5
optional (US military standard).
Surface flatness (surface type): up to 1/10λ.
| Property | Specifications |
| Thickness | 0.5-200mm |
| Size Tolerance | ±0.01 |
| Edge Finish | Ground and beveled |
| Surface Quality | 40-20 scratch-dig |
| Surface Flatness | λ/4@633nm |
| Parallelism | ≤3 arc min(≤0.9mrad) |
| Clear Aperture | ＞80% of central diameter |
| Hardness(Knoop) | 1370 kg/mm2 |
| Young's modulus | 3.4*1011N/m2 |
| Thermal Limit | 22W/m/K |
| Thermal expansion coefficient | 8.4*10-6/K |
FQA
1. Are you a trading company or factory?
We are a professional factory of sapphire products, also a trading
company .
2.Can you do customized products?
Yes, we specialized in customized production or OEM work.
CAD,3D drawing are needed.
3.Could you provide samples?
Yes, we could provide samples with a charge, but if you place the
order with a quality above 100pcs, the sample charge will be
refunded.
4.What’s the delivery time?
It depends on the type of products and the quality.
For watch case, the regular time is around 5-8 weeks for 200pcs
according to the difficulty of the processing.
5.How about the payment?
T/T payment is prefered.
6.How about the delivery?
Mostly by air, like DHL, Fedex.
