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Optical constants of SCHOTT - LaF (Lanthanum flint)
LAFN7

Wavelength: µm
 (0.35–2.5)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.66842615λ^2}{λ^2-0.0103159999}+\frac{0.298512803λ^2}{λ^2-0.0469216348}+\frac{1.0774376λ^2}{λ^2-82.5078509}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 7.27e-06 1.31e-08 -3.32e-11 8.88e-07 9.32e-10 0.248
nd: 1.7495
Vd: 34.95
glass_code: 750350.438
glass_status: standard
density: 4.38 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 5.3e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 6.4e-06 K-1
dPgF: -0.0025
climatic_resistance: 3.0
stain_resistance: 1.0
acid_resistance: 53.3
alkali_resistance: 2.2
phosphate_resistance: 4.3

Comments

lead containing glass type

References

SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

SCHOTT AG

SCHOTT AG is a German glass manufacturer. SCHOTT also publishes a glass catalog (SCHOTT Optical Glass Datasheets), which is a standard reference for the properties of many optical glasses.

External links


Glass

External links