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Optical constants of HOYA - TaFD (Dense tantalum flint)
TAFD5F

Wavelength: µm
 (0.320 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.275546-0.014470354λ^{2}+0.030922062λ^{-2}+0.00073289981λ^{-4}+4.6573307\text{×}10^{-06}λ^{-6}+1.8242746\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.79e-06 8.81e-09 -2.5e-11 7.25e-07 7.24e-10 0.197
nd: 1.83481
Vd: 42.72
glass_code: 835427
density: 4.72 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.2e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.8e-06 K-1
dPgF: -0.0062
climatic_resistance: 2.0
stain_resistance: 1.0
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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