CaF2 Windows
Calcium fluoride 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. Furthermore
the material is fairly inert chemically so that these windows are not attacked.
Uni-Optics provide artificially-crystallized calcium fluoride components available in UV grade and IR Grade.

Material: Calcium Fluoride single crystal ( UV or IR)
Diameter Tolerance:  +0.0, -0.1mm
Thickness Tolerance: ±0.1mm
Clear Aperture: >85%
Parallelism: 3 arc minute
Surface Quality: 60-40 scratch and dig
Wavefront Distortion: per 25mm @633mm
Bevel: Protective ( <0.2mm x 45° )
Coating: Optional
Standard CaF2 Window
Round Shape:
Φ4x0.5  Φ6x1  Φ8x1    Φ10x0.5  Φ10x0.5  Φ12.7x1  Φ15x1  Φ18x1  Φ20x2  Φ25x1  Φ25.4x1  Φ25.4x2 
Φ25.4x3  Φ30x2  Φ30x3  Φ38.1x3
Note for CaF2 Window:
(1). Please specify IR or UV when ordering.
(2). Custom-made CaF2 windows at any size are available. Besides round, CaF2 windows at shape of quadrate,
      triangular, or other polygonal are available. Uni-optics can provide dia. 150mm max.
(3). Typical thickness is 1mm 2mm, 3mm, 4mm, other thickness from 1.0mm to 20.0 mm is available.
(4). Better bevel is available upon request.
(5). CaF2 Windows with Anti-Reflective(AR)

Ms. Lin

Mr. Wen