RefractiveIndex.INFO

Refractive index database


Shelf

Book

Page

Optix.eXpert is our new website that aims at connecting optical professionals with employers looking to outsource optics related work. Sign up and fill out a short form to start offering your service!

Optical constants of SUMITA - GFK
K-GFK70(M)

Wavelength: µm
 (0.280 – 2.000)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.4208616-0.0057307899λ^{2}+0.011396384λ^{-2}+0.00014964607λ^{-4}+3.8084377\text{×}10^{-06}λ^{-6}-3.2734834\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.47e-05 -1.68e-09 -2.49e-11 3.77e-07 3.45e-10 0.178
nd: 1.56627
Vd: 71.3
glass_code: 569713
density: 4.46 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 1.32e-05 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.56e-05 K-1
dPgF: 0.0207
climatic_resistance: 1.0
acid_resistance: 1.0

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