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Sapphire Windows Glass Crystal Flat Sapphire Optical Glass Window
AR Coating
Properties of Optical Sapphire Window:
Optical Windows are used as viewports to protect other components
within an optical assembly, instrument, or laser. In certain
applications, optical windows are required to withstand harsh
environmental conditions and provide high levels of performance and
reliability. Sapphire window has several unique properties that
make it the ideal material for these applications.
1. Synthetic Sapphire, the single crystal form of Al2O3, is one of
the hardest materials ( 9 Mohs hardness). Because of its
structural strength, the sapphire window can be made much thinner
than other common optical windows, with better transmitance
performance.
2. High thermal stability and excellent thermal conductivity make
the sapphire window suitable for the applications in high power. The loss in a sapphire window is
less than in another common optical window.
3. Sapphire windows can withstand considerably higher temperatures
than most optical windows with zero degradation.
4. Sapphire Windows will not get dark and lose their brilliancy
when exposed to UV light.
5. Sapphire windows are extremely stable and resistant to attack by
strong acid due to sapphire’s high dielectric constant.
6. Sapphire windows offer wideband transmission from UV to Mid-IR
(0.15-5.5µm).
All these unique properties make sapphire windows the ideal
material for extreme mechanical, chemical & optical application
Product Paramenters:
Product Name | Round Sapphire optical windows |
Material | Optical Grade Sapphire |
Hardness Mohs | 9 |
Diameter | 0.1-500mm |
Tolerance | as request |
Thickness | 0.1-100mm |
Tolerance | as request |
Surface quality (scratch & dig) | 60/40 or better |
Parallelism | 3' |
Bevel | 0.1~0.3mm x 45 degree |
Clear aperture | 90% |
Coating | AR coating or custom |
Applications:
Optical Windows are flat, plane-parallel, transparent optical
surfaces designed to protect sensors and other electronicinstruments from environment conditions.
Optical Window selection considerations include material
transmission properties as well as scattering, strength and
resistance to certain environments. Their use should not impact on
magnification of a system. Optical Windows can be optically
polished and incorporate an element for diffusing light source to
control illumination.
AR coatings can be applied to ensure maximum transmission
performance for a particular wavelength. The windows are made in a
range of materials including UV Fused Silica, Quartz, IR Crystals
and optical glasses. Our optical window properties include x-ray
protection, non-browning to UV light and light transmission from
deep ultra violet to far infrared.
Optical Windows products include wedges, substrates, discs, flats,
plates, rods, protection windows, laser windows, camera windows,
light guides and domes.
Our Windows are used by scientific and industrial companies across
the world of medical, defence, instrumentation, laser, research and
imaging.
All our Optical Windows can be supplied from a standard range
stock. We also supply custom optical windows made to your
specification, sizes and specific design.