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Optical constants of HOYA - TaFD (Dense tantalum flint)
TAFD65

Wavelength: µm
 (0.36501 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=4.0113202-0.017752009λ^{2}+0.05856933λ^{-2}+0.0043200932λ^{-4}-0.00031070842λ^{-6}+3.7485638\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -6.69e-07 9.68e-09 -3.75e-11 1.14e-06 1.22e-09 0.264
nd: 2.05090
Vd: 26.94
glass_status: standard
density: 5.27 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.3e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.9e-06 K-1
dPgF: 0.0055
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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