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Optical constants of HOYA - TaF (Tantalum flint)
TAF3

Wavelength: µm
 (0.320 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.1743707-0.014110466λ^{2}+0.028862637λ^{-2}+3.355949\text{×}10^{-05}λ^{-4}+8.0422109\text{×}10^{-05}λ^{-6}-2.8956744\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.15e-06 9.33e-09 -4.33e-11 5.57e-07 5.72e-10 0.209
nd: 1.80420
Vd: 46.50
glass_code: 804465
density: 4.65 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.9e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.5e-06 K-1
dPgF: -0.0066
climatic_resistance: 1.0
stain_resistance: 2.0
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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