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Optical constants of HOYA - NbFD (Dense niobium flint)
NBFD11

Wavelength: µm
 (0.320 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.1010267-0.010022108λ^{2}+0.032631687λ^{-2}-0.00081029268λ^{-4}+0.0001935011λ^{-6}-8.0279799\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.08807e-05 0.0 0.0 0.0 0.0 0.0
nd: 1.78590
Vd: 43.93
glass_code: 786439
density: 4.43 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.1e-06 K-1
dPgF: -0.008
climatic_resistance: 1.0
stain_resistance: 3.0
acid_resistance: 3.0

Comments

General 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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