Lab Created Transparent Sapphire Optical Window In Round Shape
Sapphire has a melting point of 2040 degrees C, Mohs (Mohs)
hardness scale of up to 9, refractive index of 1.76 to 1.78.
Without impurities, sapphire can be a superior optical window
material because it is clear and transparent throughout the visible
light range, even as far away as ultraviolet and infrared light.
With such characteristics, it's no wonder sapphire has ever been a
precious gem. These same properties also make sapphire attractive
for non-precious applications, and today's state-of-the-art
synthetic crystal growth and processing technologies are driving
the increasing demand for this material.
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.
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 |
Why US?
1. We’re the rare source manufacturer of color sapphire boule, and
the most professional factory of sapphire processing, especially
the special watch case.
2. We have our own sapphire grown equipent with CZ and KY method.
3. Professional customized production according to the drawing
provided by clients.
4. Precision work of sapphire processing and polishing.
5. Experienced technicians and skilled workers.
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.
