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Optical constants of HOYA - TaFD (Dense tantalum flint)
MC-TAFD307

Wavelength: µm
 (0.350 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.4286062-0.013845333λ^{2}+0.037363009λ^{-2}+0.0011894554λ^{-4}-1.5979979\text{×}10^{-05}λ^{-6}+5.1827398\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 7.80622e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.88202
Vd: 37.22
glass_code: 882372
glass_status: standard
density: 5.49 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.3e-06 K-1
dPgF: -0.0044
climatic_resistance: 1.0
stain_resistance: 2.0
acid_resistance: 3.0

Comments

Preforms for Precision molding

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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