Optical constants of SCHOTT - SF (Dense flint)
SF57
Wavelength:
µm
(0.37–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.81651371λ^2}{λ^2-0.0143704198}+\frac{0.428893641λ^2}{λ^2-0.0592801172}+\frac{1.07186278λ^2}{λ^2-121.419942}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 7.26e-06 1.88e-08 -5.14e-11 1.96e-06 1.79e-09 0.276
nd: 1.84666
Vd: 23.83
glass_code: 847238.551
glass_status: standard
density: 5.51 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.2e-06 K-1
dPgF: 0.0123
climatic_resistance: 2.0
stain_resistance: 5.0
acid_resistance: 52.3
alkali_resistance: 2.3
phosphate_resistance: 4.3
Comments
lead containing glass type. suitable for precision molding
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets