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Optical constants of HOYA - NbFD (Dense niobium flint)
NBFD10

Wavelength: µm
 (0.350 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.2615573-0.014542851λ^{2}+0.033470739λ^{-2}+0.0012266479λ^{-4}-2.5391842\text{×}10^{-05}λ^{-6}+5.5971739\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 7.46689e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.83400
Vd: 37.34
glass_code: 834373
glass_status: standard
density: 4.57 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.9e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.3e-06 K-1
dPgF: -0.0021
climatic_resistance: 1.0
stain_resistance: 3.0
acid_resistance: 3.0

Comments

Recommended glass type

References

HOYA Zemax catalog 2017-04-01 (obtained from http://www.hoya-opticalworld.com)

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

HOYA Corporation

Hoya Corporation is a Japanese company manufacturing optical products.

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