Optical constants of SCHOTT - SF (Dense flint)
N-SF4
Wavelength:
µm
(0.365–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.67780282λ^2}{λ^2-0.012679345}+\frac{0.282849893λ^2}{λ^2-0.0602038419}+\frac{1.63539276λ^2}{λ^2-145.760496}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -4.88e-06 6.57e-09 -2.72e-11 9.67e-07 1.48e-09 0.282
nd: 1.75513
Vd: 27.38
glass_code: 755274.315
glass_status: standard
density: 3.145 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9.45e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.087e-05 K-1
dPgF: 0.0118
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 1.3
alkali_resistance: 1.0
phosphate_resistance: 1.0
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets
Data
INFO
SF5 optical glass
SF5 is a popular optical glass. Most glass makers produce this or very similar glass under slightly different names.SF5 and similar glasses produced by different makers
| Maker | Glass |
|---|---|
| Schott | N-SF5 |
| Hikari | E-SF5 |
| HOYA | E-FD5 |
| Sumita | K-SFLD5 |
| CDGM | ZF2 |