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Optical constants of HOYA - TaFD (Dense tantalum flint)
TAFD37A

Wavelength: µm
 (0.350 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.4958125-0.014342354λ^{2}+0.037807251λ^{-2}+0.0014184073λ^{-4}-4.6470269\text{×}10^{-05}λ^{-6}+6.919444\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 6.28e-07 8.14e-09 -5.08e-11 8.44e-07 7.6e-10 0.225
n_d: 1.90043
V_d: 37.37
glass_code: 900374
glass_status: standard
density: 4.9 g/cm3
coefficient_of_thermal_expansion_1: 7e-06 K-1
coefficient_of_thermal_expansion_2: 8.5e-06 K-1
ΔP_gF: -0.0043
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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