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Optical Infrared Prism , 90 Degree Right Angle CaF2 Calcium Fluoride Prim

Basic Information
Place of Origin: Wuhan,China
Brand Name: Wuhan Siwer Optics
Minimum Order Quantity: 20 pieces
Price: 50 USD/piece
Packaging Details: 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Delivery Time: 5-7weeks
Payment Terms: T/T, Western Union
Supply Ability: 1000 pieces/month
Detail Information
Material: Calcium Fluoride Size Tolerance: +/-0.1mm
Chamfer: 0.2-0.5mm Surface Quality: 60/40
Surface Flatness: Lambda/4 In 25.4mm Angle Tolerance: 10 Arc Sed
Standard Coating: Customized Size Range: 5-150mm
Usage: Infared System
High Light:

right angle prism

,

ir prism


Product Description

Calcium Fluoride (CaF2) Prims

Calcium Fluoride is superior to UV Fused Silica in deep UV applications. It has a transmission greater than 75% between 0.15-9µm and transmits efficiently up to about 8µm transmitting over 90%. Calcium Fluoride has a hardness of HK158, which is approximately twice as hard as BaF₂. Calcium Fluoride is not readily degraded under normal atmospheric conditions until 600°C when it starts to soften. In dry conditions Calcium Fluoride has a maximum operating temperature of 800°C. Calcium fluoride can be vulnerable to thermal shock at high temperatures. When calcium fluoride powder is compressed in moulds the resulting material is called Irtran-3.

  

Optical Infrared Prism , 90 Degree Right Angle CaF2 Calcium Fluoride Prim 0   Optical Infrared Prism , 90 Degree Right Angle CaF2 Calcium Fluoride Prim 1


 

Optical Properties of CaF2 Prisms

Material Calcium Fluoride
AR Coating Range 0.15-9um
Diameter Tolerance +0.0/-0.1 mm
Thickness Tolerance ±0.1 mm
Surface Quality 60-40 Scratch-Dig
Surface Flatness
(Plano Side)
λ/2 at 633nm
Surface Irregularity
(Peak to Valley)
λ/4 at 633nm
Angle tolerance 3 arcmin (5 seconds according to customer requirements)

 
 


Transmittance of CaF2 window(T=2mm)

Optical Infrared Prism , 90 Degree Right Angle CaF2 Calcium Fluoride Prim 2

Optical Infrared Prism , 90 Degree Right Angle CaF2 Calcium Fluoride Prim 3


CaF2 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]

Production Line

Optical Infrared Prism , 90 Degree Right Angle CaF2 Calcium Fluoride Prim 4
 


Infrared Elements Selection Guide

Optical Infrared Prism , 90 Degree Right Angle CaF2 Calcium Fluoride Prim 5


 

 
 

Contact Details
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