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Optical constants of SCHOTT - SF (Dense flint)
SF66

Wavelength: µm
 (0.39 – 2.5)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{2.07842233λ^2}{λ^2-0.0180875134}+\frac{0.407120032λ^2}{λ^2-0.0679493572}+\frac{1.76711292λ^2}{λ^2-215.266127}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
nd: 1.92286
Vd: 20.88
glass_code: 923209.603
glass_status: preferred
density: 6.025 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 9.01e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.148e-05 K-1
dPgF: 0.0197
climatic_resistance: 2.0
stain_resistance: 5.0
acid_resistance: 53.4
alkali_resistance: 2.3
phosphate_resistance: 4.2

Comments

was replaced by N-SF66

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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