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Optical constants of SCHOTT - LaSF (Lanthanum dense flint)
P-LASF51

Wavelength: µm
 (0.334–2.5)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.84568806λ^2}{λ^2-0.00988495571}+\frac{0.3390016λ^2}{λ^2-0.0378097402}+\frac{1.32418921λ^2}{λ^2-97.841543}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 7.79e-06 1.1e-08 -2.03e-11 7.86e-07 8.78e-10 0.215
nd: 1.81
Vd: 40.93
glass_code: 810409.458
glass_status: standard
density: 4.579 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 6.01e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 7.4e-06 K-1
dPgF: -0.008
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 51.3
alkali_resistance: 1.0
phosphate_resistance: 2.2

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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