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Crystal Optical Calcium Fluoride Ir Window Used In Infrared Flame Detector

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Crystal Optical Calcium Fluoride Ir Window Used In Infrared Flame Detector

Brand Name : Wuhan Siwer Optics

Model Number : Plano surface window

Place of Origin : Wuhan,China

MOQ : 5 pieces

Price : 5-98USD/piece

Payment Terms : T/T, Western Union

Supply Ability : 1000 pieces/month

Delivery Time : 3-5 weeks

Packaging Details : 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler

Material : Calcium Fluoride(CaF2)

Size tolerance : +/-0.1mm

Chamfer : 0.2-0.5mm

Surface quality : 60/40

Surface flatness : Lambda/4 in 25.4mm

Parallelism : 0.02mm

Standard coating : uncoated or customized

Size range : 3-120mm

Usage : UV and IR optica viewport windows

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Single Crystal CaF2 Window

Calcium Fluoride is used for optical windows, drilled discs, lenses and prisms in transmision range 0.15-9µm. Degradation due to to moisture in the atmosphere is minimal, and polished surfaces of the CaF2 windows may be expected to withstand several years exposure to normal atmospheric conditions.

Since they are nonaxial, CaF2 crystals do not require consideration of axial direction. Because of CaF2 low refractive index, Calcium Fluoride windows can be used without an anti-reflection coating.

Typical applications: VUV - UV - IR imaging systems, excimer laser windows, CaF2 viewport, Spectroscopic windows and lenses.We produce CaF2 windows and mirrors for European manufacturers of gas detectors and gas analyzers.

Optical Properties of CaF2 Window

Material Calcium Fluoride
Diameter Tolerance +0.0/-0.1 mm
Thickness Tolerance ±0.1 mm
Parallelism 1 arc min
Surface Quality 60-40 Scratch-Dig
Surface Flatness
(Plano Side)		 λ/2 at 633nm
Surface Irregularity
(Peak to Valley)		 λ/2 at 633nm
Clear Aperture 90%

Calcium Fluoride properties

Chemical Formula CaF2
Crystal Class Cubic, cleaves [111] plane
Lattice Constant, Å 5.46
Density, g/cm3 (20 °C) 3.18
Molecular Weight 78.08
Reflection Loss 5.4% at 5 μm
Absorption Coefficient 7.8 x 10-4 cm-1 @ 2.7 μm
Dielectric Constant for 105 Hz 6.76
Melting Temperature, K 1630
Thermal Conductivity, W/(m K) at 273 K 10
Thermal Expansion, 1/K at 300 K 18.9 x 10-6
Specific Heat, cal/(g K) at 273 K 0.204
Debye Temperature, K 510
Young's Modulus, GPa 75.79
Rupture Modulus, GPa 0.0365
Shear Modulus, GPa 33.76
Bulk Modulus, GPa 83.03
Poisson's Ratio 0.28
Knoop Hardness, kg/mm2 178 [100], 160 [110]

Infrared Elements Selection Guide

Crystal Optical Calcium Fluoride Ir Window Used In Infrared Flame Detector
Production process

Crystal Optical Calcium Fluoride Ir Window Used In Infrared Flame Detector


Product Tags:

ir window

      

infrared system protectd window

      
China Crystal Optical Calcium Fluoride Ir Window Used In Infrared Flame Detector wholesale

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