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Optical constants of HOYA - NbFD (Dense niobium flint)
NBFD15-W

Wavelength: µm
 (0.350 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.1540011-0.013256753λ^{2}+0.034103312λ^{-2}+0.0018472167λ^{-4}-0.00010807332λ^{-6}+1.2975901\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 2.02e-06 7.39e-09 -1.85e-11 7.78e-07 6.81e-10 0.268
n_d: 1.80610
V_d: 33.27
glass_code: 806333
glass_status: standard
density: 3.47 g/cm3
coefficient_of_thermal_expansion_1: 7.1e-06 K-1
coefficient_of_thermal_expansion_2: 9.1e-06 K-1
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 1.0

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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