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Optical constants of SCHOTT - LaSF (Lanthanum dense flint)
N-LASF46B

Wavelength: µm
 (0.365 – 2.5)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{2.17988922λ^2}{λ^2-0.0125805384}+\frac{0.306495184λ^2}{λ^2-0.0567191367}+\frac{1.56882437λ^2}{λ^2-105.316538}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 5.98e-06 1.3e-08 -3.5e-12 9.13e-07 1.24e-09 0.267
nd: 1.90366
Vd: 31.32
glass_code: 904313.451
glass_status: standard
density: 4.51 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.97e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.11e-06 K-1
dPgF: 0.0045
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 3.3
alkali_resistance: 1.0
phosphate_resistance: 1.0

Comments

suitable for precision molding

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.

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