CaF2 Windows

 

CaF2 Windows

Attribute Specification
Typical Diameter (Φmm) 8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0
Typical Thickness (mm) 1.0, 2.0, 3.0, 4.0
Diameter Tolerance (mm) +0.0/-0.2 (General), +0.0/-0.1 (High Precision)
Thickness Tolerance (mm) ±0.2 (General), ±0.05 (High Precision)
Clear Aperture >80% (Small Size), >90% (Large Size)
Parallelism 3 min. (General), 10 sec. (High Precision)
Surface Quality 80/50 (General), 40/20 (High Precision)
Flatness (per 25mm@633nm) λ(General), λ/4 (High Precision)
Bevel (face width x 450) <0.25mm
Coating Uncoated, AR, HR, PR, Coating, etc.

 

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.

Standard CaF2 Window series: 
Diameter Tolerance: --------------------- +0.0, -0.1mm 
Thickness Tolerance: -------------------- ±0.2mm 
Clear Aperture: ---------------------------->80% 
Parallelism: -----------------------------------1 arc minute 
Surface Quality: ----------------------------80/50 scratch and dig 
Wavefront Distortion: -------------------- per 25mm @633mm 
Bevel: -----------------------------------------<0.25mm x 45° 
Coating: -------------------------------------- Uncoated

 

Part NO.
F (mm)
T (mm)
WIN4101
12.7
2
WIN4102
12.7
3
WIN4103
25.4
2
WIN4104
25.4
3
WIN4105
50.8
3
WIN4106
50.8
4
 

 

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