Products CaF2（Fluorite）

Characteristic

Characteristic
Characteristic
Characteristic
  • The transmitted wavelength region ranges widely from vacuum ultraviolet to infrared.
  • The crystalline material shows a low dispersion and also anomalous dispersion. This material can be used to produce an apochromatic lens in combination with other optical materials.
  • The crystalline material is physically and chemically stable, and is resistant to water and chemicals.

Internal Transmittance

Internal Transmittance

Physical Properties

Basic Physical Properties
Name of crystal material CaF2
Transmittance wavelength range（μm） 0.13～10
Color Colorless
Density (g/cc) 3.18
Melting point (℃) 1418
Solubility (g/100gH2O) (20℃) 0.00151
Molecular weight 78.08
Crystal system Cubic
Crystal structure Fluorite type
Cleavage plane ｛１１１｝
Physical Properties
Thermal Properties
Thermal Expansion α (/℃)（20℃～60℃） 24×10-6
Thermal Conductivity λ (cal/cm･sec･℃) 2.41×10-2
Specific Heat Cp (cal/g･℃) 0.211
Mechanical Properties
Knoop Hardness Hk 158.3
Young’s Modulus E (GPa) 75.8
Modulus of Rigidity G (GPa) 33.77
Poisson Ratio 0.26

Application

Telephoto lens for digital single-lens reflex camera
Telephoto lens for digital single-lens reflex camera
Astronomical telescope
Astronomical telescope
Television camera
Television camera
Ultraviolet microscope
Ultraviolet microscope

CANON CAMERA MUSEUM

Pamphlet Download（PDF）

Pamphlet

Pamphlet (PDF: 229KB)

  • * Please contact us for more information about sizes and specifications.