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Optical constants of HOYA - TaFD (Dense tantalum flint)
TAFD37

Wavelength: µm
 (0.350 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.4943369-0.013647624λ^{2}+0.03883317λ^{-2}+0.0011132555λ^{-4}-7.402237\text{×}10^{-06}λ^{-6}+5.3027754\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.06e-06 9.55e-09 -8.39e-12 7.47e-07 7.08e-10 0.249
n_d: 1.90043
V_d: 37.37
glass_code: 900374
density: 5.19 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.4e-06 K-1
ΔP_gF: -0.0038
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 1.0

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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