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Optical constants of HOYA - FDS (Special dense flint)
FDS90-SG

Wavelength: µm
 (0.36501 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.2606321-0.017780398λ^{2}+0.040902938λ^{-2}+0.0056076934λ^{-4}-0.00056434039λ^{-6}+5.4763391\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: -4.62e-06 1.29e-08 -2.11e-11 1.04e-06 1.27e-09 0.296
n_d: 1.84666
V_d: 23.78
glass_code: 847238
glass_status: standard
density: 3.5 g/cm3
coefficient_of_thermal_expansion_1: 8.7e-06 K-1
coefficient_of_thermal_expansion_2: 1.07e-05 K-1
ΔP_gF: 0.0137
climatic_resistance: 2.0
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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