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Optical constants of HOYA - TaFD (Dense tantalum flint)
TAFD32

Wavelength: µm
 (0.320 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.396108-0.013087065λ^{2}+0.034853516λ^{-2}+0.00079083177λ^{-4}+7.6995212\text{×}10^{-06}λ^{-6}+2.3516742\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.82e-07 8.11e-09 -2.84e-11 9.6e-07 9.61e-10 0.141
nd: 1.87070
Vd: 40.73
glass_code: 871407
glass_status: standard
density: 4.84 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.8e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.4e-06 K-1
dPgF: -0.0067
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 2.0

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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