RefractiveIndex.INFO

Refractive index database

Shelf

Book

Page

Optical constants of SUMITA - LaSF (Lanthanum dense flint)
K-LaSFn16

Wavelength: µm
 (0.320 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.124535-0.014985014λ^{2}+0.024795878λ^{-2}+0.00096271556λ^{-4}-6.4587038\text{×}10^{-05}λ^{-6}+4.6162437\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 2.27e-06 1.53e-08 -2.61e-10 5.42e-07 5.61e-10 0.206
n_d: 1.78830
V_d: 47.4
glass_code: 788474
density: 4.76 g/cm3
coefficient_of_thermal_expansion_1: 5.4e-06 K-1
coefficient_of_thermal_expansion_2: 7.2e-06 K-1
ΔP_gF: -0.0104
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