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Optical constants of FK51A
N-FK51A (SCHOTT)

Wavelength: µm
 (0.29 – 2.5)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{0.971247817λ^2}{λ^2-0.00472301995}+\frac{0.216901417λ^2}{λ^2-0.0153575612}+\frac{0.904651666λ^2}{λ^2-168.68133}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.83e-05 -7.89e-09 -1.63e-12 3.74e-07 3.46e-10 0.15
nd: 1.48656
Vd: 84.47
glass_code: 487845.368
glass_status: standard
density: 3.675 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 1.274e-05 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.481e-05 K-1
dPgF: 0.0342
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 52.3
alkali_resistance: 2.2
phosphate_resistance: 4.3

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.

External links


N-FK51A optical glass

N-FK51A is a popular optical glass produced by Schott AG

Glass

External links