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Optical constants of SCHOTT - FK (Fluor crown)
N-FK5

Wavelength: µm
 (0.26 – 2.5)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{0.844309338λ^2}{λ^2-0.00475111955}+\frac{0.344147824λ^2}{λ^2-0.0149814849}+\frac{0.910790213λ^2}{λ^2-97.8600293}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -7.24e-06 1.58e-08 -9.51e-12 3.51e-07 4.61e-10 0.156
nd: 1.48749
Vd: 70.41
glass_code: 487704.245
glass_status: standard
density: 2.45 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 9.2e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 1e-05 K-1
dPgF: 0.0036
climatic_resistance: 2.0
stain_resistance: 1.0
acid_resistance: 4.0
alkali_resistance: 2.0
phosphate_resistance: 2.3

Comments

suitable for precision molding. step 0.5 available

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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