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Optical constants of HOYA - TaF (Tantalum flint)
TAF1

Wavelength: µm
 (0.300 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.0736378-0.015501284λ^{2}+0.023627699λ^{-2}+0.00066300852λ^{-4}-2.8353438\text{×}10^{-05}λ^{-6}+2.2090799\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 3.76e-06 9.56e-09 -3.12e-11 5.1e-07 3.46e-10 0.216
n_d: 1.77250
V_d: 49.62
glass_code: 773496
glass_status: standard
density: 4.28 g/cm3
coefficient_of_thermal_expansion_1: 5.6e-06 K-1
coefficient_of_thermal_expansion_2: 7.3e-06 K-1
ΔP_gF: -0.0086
climatic_resistance: 1.0
stain_resistance: 2.0
acid_resistance: 3.0

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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