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Optical constants of HOYA - FD (Dense flint)
E-FD7

Wavelength: µm
 (0.360 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.6165865-0.011427854λ^{2}+0.022534361λ^{-2}+0.001551289λ^{-4}-0.00011769852λ^{-6}+1.2401891\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.8611e-07 0.0 0.0 0.0 0.0 0.0
nd: 1.63980
Vd: 34.57
glass_code: 640346
glass_status: special
density: 2.75 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8.7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.07e-05 K-1
dPgF: 0.0055
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 1.0

Comments

Not in a position to accept new order because of discontinuation.

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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