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Optical constants of HIKARI - FK (Fluorite crown)
J-FK5

Wavelength: µm
 (0.280 – 2.400)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.18826855-0.00919044724λ^{2}-0.000111621071λ^{4}+0.00926372815λ^{-2}+7.34900733\text{×}10^{-05}λ^{-4}+4.19724242\text{×}10^{-06}λ^{-6}-1.15412203\text{×}10^{-07}λ^{-8}$$

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

Additional information

n_is_absolute: false
λ_is_vacuum: false
temperature: 23.0 °C
n_d: 1.487490
V_d: 70.318793
density: 2.45 g/cm3
coefficient_of_thermal_expansion_1: 8.9e-06 K-1
ΔP_gF: 0.0027
phosphate_resistance: 3.0

References

1) HIKARI optical glass catalog 2015-04-01
2) HIKARI Zemax catalog

More info - wiki

Hikari Glass Co., Ltd. is a Japanese glass maker, a subsidiary of Nikon Corp.

External links

Latest optical glass catalog