RefractiveIndex.INFO

Refractive index database


nk database   |   n2 database   |   about

Shelf

Book

Page

Optical constants of SUMITA - LaSF (Lanthanum dense flint)
K-LaSFn6

Wavelength: µm
 (0.310–2.000)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=3.1766024-0.015214563λ^{2}+0.026674405λ^{-2}+0.00074674513λ^{-4}-2.63508\text{×}10^{-05}λ^{-6}+2.7514981\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.72e-06 1.48e-08 -1.94e-10 5.94e-07 9.48e-10 0.205
nd: 1.80400
Vd: 46.6
glass_code: 804466
density: 4.72 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.9e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.4e-06 K-1
dPgF: -0.0098
climatic_resistance: 1.0
acid_resistance: 3.0

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