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Optical constants of HOYA - FD (Dense flint)
FD225

Wavelength: µm
 (0.36501 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.1189869-0.015820772λ^{2}+0.044425024λ^{-2}+0.0035834882λ^{-4}-0.00023943449λ^{-6}+3.8756542\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.09e-05 4.1e-09 -1.04e-11 1.01e-06 1.33e-09 0.307
n_d: 1.80809
V_d: 22.76
glass_code: 808228
glass_status: standard
density: 3.32 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 9.6e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.18e-05 K-1
ΔP_gF: 0.0213
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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