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Optical constants of HOYA - NbFD (Dense niobium flint)
NBFD12

Wavelength: µm
 (0.320 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.1513655-0.013052015λ^{2}+0.029502111λ^{-2}+0.00067643437λ^{-4}+3.6679701\text{×}10^{-06}λ^{-6}+1.8233293\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 1.05628e-05 0.0 0.0 0.0 0.0 0.0
n_d: 1.79950
V_d: 42.34
glass_code: 800423
glass_status: special
density: 4.45 g/cm3
coefficient_of_thermal_expansion_1: 5.7e-06 K-1
coefficient_of_thermal_expansion_2: 7e-06 K-1
ΔP_gF: -0.0072
climatic_resistance: 1.0
stain_resistance: 3.0
acid_resistance: 4.0

Comments

Not in a position to accept new order because of discontinuation.

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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