Description of Sapphire Optical Windows:
Sapphire optical windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration. Sapphire windows will exceed all other optical materials in harsh environments, providing a better barrier between elements. Creator Optics can make various sapphire optical windows according to special requirements and drawings. All of these sapphire windows have high-precision polished surfaces, surface accuracy, and parallelism.
The Character of Sapphire Optical Windows:
Transmission Range: 0.15 to 5.5 µm (UV to mid-IR)
Refractive Index: 1.76 at 550 nm
Optical Clarity: High transmission with minimal absorption across a wide wavelength range
Surface Quality: Can achieve scratch-dig specifications of 10-5 and surface roughness ≤ 0.3 nm RA
Maximum Operating Temperature: Up to 2030°C
Thermal Shock Resistance: High resistance to rapid temperature changes
Cryogenic Performance: Retains high thermal conductivity at cryogenic temperatures, outperforming copper
High Optical Transmission: Clear visibility across a wide wavelength range
Exceptional Hardness: Superior resistance to scratching and abrasion
Thermal Stability: Operates effectively across a wide temperature range, including extreme conditions
Chemical Inertness: Maintains integrity in harsh chemical environments
Mechanical Strength: High resistance to pressure and mechanical stress
Form of Sapphire Optical Windows:
| Diemensions | Diameter from 5mm to 150mm, customized available |
| Thickness | 0.2mm to 50mm , customized available |
| Diameter Tolerance | ±0.05mm |
| Thickness Tolerance | ±0.05mm |
| Edge of Sapphire Windows | fine ground or polished |
| Chamfer | minmium 0.2 x 45° |
| Flatness / Surface Accuracy | λ/4 per inch @633nm |
| Parallelism | 30 arc second |
| Surface Qulitity | 20/10 |
| Clear Aperture | ≥90% |
| Coating for Sapphire Windows | Antireflection coating at the design wavelength, AR, BBAR, Dual wavelength AR, Laser damage resistant AR |
Physical Photos of Sapphire Optical Windows:
Application of Sapphire Optical Windows:
1. Aerospace: Because of Sapphire Optical Windows's perfect durability and corrosion resistance, high temperature resistance, but also a very wide range of spectral transmission, sapphire windows are widely used in aerospace equipment and instruments.
2. Sapphire flash lamps: Sapphire's high temperature resistance and low thermal expansion rate make it a protective window for high-strength lamps as well as flash lights. Scratch resistant, no burst.
3. Applications of analytical instruments: In many analytical cases, the gas or liquid analysed is highly corrosive. The Sapphire Optical Windows is perfectly corrosion-resistant and is widely used in such analytical instruments. In addition, Sapphire Optical Windows have a good transmittance from ultraviolet to infrared wide spectrum, which makes it more widely used in spectral range.
4. Applications of medical equipments: Due to its excellent durability, Sapphire Optical Windows are widely used in a variety of medical applications such as laser medical instruments, laser beauty instruments and endoscopes.
5. Optical applications: Because of the wide spectral range of sapphire crystals, Sapphire Optical Windows can be used in all kinds of optical applications, from ultraviolet to infrared. In terms of mechanical and physical properties, Sapphire Optical Windows have an advantage over the optical windows of other materials.
6. Illumination applications: Sapphire Optical Windows have a good heat resistance, for very high brightness lighting, it is a good protection window material.
7. Watchs and industry instruments: Sapphire Optical Windows are considered to be protective covers for watches or gauges and are resistant to scratches, robustness and non-bursting.
Application Picture of Sapphire Optical Windows:
Customization:
These customized sapphire windows can be selected with KY, CZ, HEM sapphire crystals, and C plane, R plane, A plane cutting. The main types of customized sapphire windows are as follows:
1. Sapphire rectangular windows
2. Sapphire T-step windows (round and Rectangular)
3. All-surfaces-polished sapphire windows
4. Sapphire conical windows
5. Sapphire wedges
6. Micro sapphire windows
7. Large size sapphire windows
FAQ:
1.Q:What is the transmission range of sapphire optical windows?
A:Sapphire windows have a transmission range from approximately 150 nm (UV) to 5.5 microns (IR), with high transmission in the visible spectrum (85% to 90%).
2.Q:What surface quality can be expected from sapphire windows?
A:Surface quality specifications are often given as scratch-dig numbers, such as 60-40, 40-20, or 20-10, indicating the maximum allowable scratch width and dig diameter.
3.Q:Can sapphire windows be coated to enhance performance?
A:Yes, sapphire windows can be coated with anti-reflective (AR) coatings, high-reflective (HR) coatings, or other custom coatings to improve optical performance.
Product Recommend:
1. Customizable sapphire watch dial, high transparency, scratch-resistant high Durability
2.Customizable Irregular-shaped Sapphire Windows High Transmittance
