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Optical constants of HOYA - TaFD (Dense tantalum flint)
TAFD30

Wavelength: µm
 (0.310 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.4419038-0.014175245λ^{2}+0.03435104λ^{-2}+0.0011752271λ^{-4}-3.9010343\text{×}10^{-05}λ^{-6}+3.7417054\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.21e-06 9.96e-09 -3.19e-11 8.4e-07 2.81e-10 0.184
n_d: 1.88300
V_d: 40.80
glass_code: 883408
glass_status: standard
density: 5.42 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.5e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.2e-06 K-1
ΔP_gF: -0.0094
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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