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Optical constants of HOYA - TaFD (Dense tantalum flint)
TAFD40

Wavelength: µm
 (0.36501 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.8106232-0.016351565λ^{2}+0.058801097λ^{-2}+0.0034919026λ^{-4}-0.0001694811λ^{-6}+3.2569333\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: -1.53e-06 7.62e-09 -3.12e-11 1.08e-06 1.19e-09 0.287
n_d: 2.00069
V_d: 25.46
glass_status: standard
density: 4.73 g/cm3
coefficient_of_thermal_expansion_1: 7.2e-06 K-1
coefficient_of_thermal_expansion_2: 8.7e-06 K-1
ΔP_gF: 0.0111
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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