RefractiveIndex.INFO

Refractive index database

Shelf

Book

Page

Optical constants of SUMITA - FK (Fluor crown)
K-FK5

Wavelength: µm
 (0.270 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.189197-0.0097642231λ^{2}+0.0086917382λ^{-2}+0.00023646623λ^{-4}-1.7699987\text{×}10^{-05}λ^{-6}+9.6989631\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -7.46e-06 1.15e-08 -2.45e-10 3.01e-07 2.4e-09 0.169
n_d: 1.48749
V_d: 70.4
glass_code: 487704
density: 2.45 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8.8e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9.8e-06 K-1
ΔP_gF: 0.0032
climatic_resistance: 1.0
acid_resistance: 5.0

References

SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book

Data

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

INFO

SUMITA Optical Glass, Inc.

SUMITA Optical Glass, Inc. is a Japanese glass manufacturer

External links


Glass

External links