fanshaped sapphire optical glass window,sector Al2O3 sapphire lens for window,sapphire optical glass wafer
What is Sapphire merit?
①- Thinner and Stronger than Standard Glass Windows
②- Features Extreme Surface Hardness and Chemical Resistance
③- Transmits Wavelengths Ranging From UV to Mid-Infrared
Sapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamonds and, because of their structural strength, sapphire windows can be made much thinner than other common dielectric windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3), and is useful in a transmission range from 0.2 - 5.5µm.
Comparison of optical window materials
|BK7||Transmission Range: 330-2100nm
Refractive Index: 1.5164@588nm
|Most popular and low cost
Visible and near IR spectrum applications
|Fused Silica||Transmission Range: 185-2500nm
Refractive Index: 1.4858@308nm
Low Thermal Expansion Coefficient: 0.54 x 10-6K
|UV to IR spectrum
Best choice for thermal resistance
|Sapphire||Transmission Range: 180-4500nm
Refractive Index: 1.755@1000nm
|Best choice for scratch resistance applications Thinner optics Wide Transmission Range|
|Calcium Fluoride||Transmission Range: 170-7800nm
Refractive Index: 1.399@5000nm
Little Hygroscopic Susceptibility
High Thermal Expansion Coefficient: 18.85 x 10-6K
|IR laser applications|
|MgF2||Transmission Range: 120-7000nm
Refractive Index: 1.376@700nm
|UV laser applications|
1. window/ sight glass in high temperature situation 2. optial lens 3.led substrates
4. crucibles,trays,boats. 5. UV transmitting optical
6. protective glass cover for phone,camera,watch,scanner etc.
7. Sapphire blade
8. Sapphire bearing
9. Sapphire/Ruby ball for three-coordinate measuring machine
4. our sapphire produce step
About size we can provide
|Material||sapphire,Fused silica,optical glass, etc|
|Flatness||Lambda /4 Lambda /10|
|Bevel||0.25 mm at 45 degrees|
AR coating , Enhanced aluminum or custom
Q: How to pay?
A: T/T, Paypal, before the delivery.
Q: What's your MOQ?
A: (1) For inventory, the MOQ is 1pcs. if 10pcs it's better.
(2) For customized products, the MOQ is 3 pcs up.
Q: What's the delivery time?
A: (1) For the standard products
For inventory: the delivery is 5 workdays after you place the order.
For customized products: the delivery is 2 -4 weeks after you order contact.