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Optical constants of HOYA - TaF (Tantalum flint)
TAF3D

Wavelength: µm
 (0.320 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.175337-0.014107601λ^{2}+0.0278609λ^{-2}+0.00040102824λ^{-4}+2.4504764\text{×}10^{-05}λ^{-6}+2.4435731\text{×}10^{-08}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.82e-06 8.49e-09 -3.35e-11 6.91e-07 6.18e-10 0.156
nd: 1.80420
Vd: 46.50
glass_code: 804465
glass_status: standard
density: 4.4 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.1e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.6e-06 K-1
dPgF: -0.0073
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 3.0

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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