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Optical constants of HOYA - TaFD (Dense tantalum flint)
TAFD33

Wavelength: µm
 (0.340 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.4316955-0.013156273λ^{2}+0.035631862λ^{-2}+0.00091378109λ^{-4}-4.0366886\text{×}10^{-06}λ^{-6}+3.3867688\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 1.04e-06 9.9e-09 -5.86e-11 9.55e-07 8.81e-10 0.159
n_d: 1.88100
V_d: 40.14
glass_code: 881401
glass_status: standard
density: 5.4 g/cm3
coefficient_of_thermal_expansion_1: 6.8e-06 K-1
coefficient_of_thermal_expansion_2: 8.3e-06 K-1
ΔP_gF: -0.0059
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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