CaF2 Window (Calcium Fluoride Window) is the most advantage product from A-Star’s Plano Workshop. Fluorides are usually toxic to humans, however CaF2 is considered relatively harmless due to its extreme insolubility.
CaF2 Window / Calcium Fluoride Windows
A-Star is the professional Optical Windows supplier forCaF2 Window , We has been exported Calcium Fluoride Windows to all over the world.
CaF2 Window (Calcium Fluoride Window) is the most advantage product from A-Star’s Plano Workshop. Fluorides are usually toxic to humans, however CaF2 is considered relatively harmless due to its extreme insolubility.
CaF2 material is commonly used as a window material for both infrared and ultraviolet wavelengths, since it is transparent in these regions (about 0.15 μm to 9 μm) and exhibits extremely weak birefringence. The birefringence of calcium fluoride exceeds tolerable limits. This problem with birefringence can be mitigated through optimized growth process. It is particularly important as an ultraviolet optical material for integrated circuit lithography.
CaF2 Window Specifications:
| Attribute | General | High Precision |
| Dimension Tolerance: | +0.0/-0.2mm | +0.0/-0.02mm |
| Thickness Tolerance: | ±0.2mm | ,±0.05 |
| Surface Quality: | 80/50 | 40/20 |
| Clear Aperture: | ＞90% | ＞95% |
| Flatness: | λ/2 | λ/10 |
| Parallelism: | <3 arc min. | <3 arc sec. |
| AR Coated: | Uncoated, AR, HR, PR, etc. | Uncoated, AR, HR, PR, etc. |
CaF2 Window Typical Sizes:
| Round Shape: Diameter(mm): | Φ5.0 , Φ10.0, Φ12.7.0, Φ15.0,Φ20.0, Φ25.4, Φ38.1, Φ50.8, Φ76.2 |
| Square Shape: WxH(mm) | 5.0×5.0, 10.0×10.0, 15.0×15.0, 20.0×20.0, 25.0×25.0, 50.0×50.0 |
| Thickness: | 0.5,1.0,1.5, 2.0, 3.0, 4.0, 5.0,6.0, 8.0,10.0, 50.0 |
Dimensions are available upon your request.
Note for CaF2 Window:
(1). Custom-made CaF2 windows at any size are available.
Besides round, CaF2 windows at shape of quadrate, triangular, or other polygonal are available.
(2). Typical thickness is 2mm, 3mm, 4mm, other thickness from 1.0mm to 20.0 mm is available.
(3). Better bevel is available upon request.
(4). CaF2 Windows with Anti-Reflective(AR), High-Reflective(HR), Partial-Reflective(PR) coating are available.
This kind of windows si made from Custom-made CaF2. Fluorides are usually toxic to humans, however CaF2 is considered relatively harmless due to its extreme insolubility. The material is commonly used as a window material for both infrared and ultraviolet wavelengths, since it is transparent in these regions (about 0.15 μm to 9 μm) and exhibits extremely weak birefringence. The birefringence of calcium fluoride exceeds tolerable limits. This problem with birefringence can be mitigated through optimised growth process. It is particularly important as an ultraviolet optical material for integrated circuit lithography.
CaF2 Window Specifications:
| Dimension Tolerance: | +0.0/-0.2mm |
| Thickness Tolerance: | ±0.2mm（General),±0.05(High Precision) |
| Surface Quality: | 80/50（General),40/20(High Precision) |
| Clear Aperture: | ＞90% |
| Flatness: | λ/2@633nm（General),λ/10@633nm Precision) |
| Parallelism: | |
| AR Coated: | Uncoated, AR, HR, PR, etc. |
CaF2 Window Typical Sizes:
| Round Shape:Diameter(mm): | Φ5.0；Φ10.0 ；Φ12.7；Φ15.0；Φ20.0； Φ25.4；Φ30.0；Φ38.1；Φ50.8；Φ76.2 |
| Square Shape:WxH(mm) | 5.0×5.0；10.0×10.0 ；15.0×15.0 ； 20.0×20.0；25.0×25.0；50.0×50.0 |
| Thickness Tolerance: | 0.5；1.0；1.5；2.0；3.0；4.0； 5.0；6.0；8.0；10.0; 50.0 |
High quality CaF2 MgF2 Windows, Optical Windows
An Optical Window is an optically flat. These regular windows are applied to isolate different physical environments while allowing light pass. When selecting windows,please consider materials, transmission, scattering, parallelism and resistance to certain environment. It can be widely used on laser technology, IR detector and imaging technology etc.
Astar offers standard and high precision optical glass windows in round ,rectangular, wedge windows and custom shape and size with different optical glasses,Fused Silica, Sapphire, ZnSe, Zns and IR crystal. The high precision parallelism of 10 arc seconds, surface quality of 10/5 and flatness of λ/20. Single layer or multi-layer anti-reflection coatings are available.