D1420 1: S 4020 (BARBERINI)

Glasses, oxides and dielectrics supplier-datasheet Supplier: BARBERINI

1 dataset, together covering 0.4358–0.6563 µm. Default: D1420 1: S 4020.

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D1420 1: S 4020 n 0.4358–0.6563 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# D1420 1: S 4020 (BARBERINI): D1420 1: S 4020
mat = ls.fetch_refractiveindex("specs", "BARBERINI-filter", "D1420_1", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(mat.range_nm)  # (435.83, 656.27) nm
eps = mat.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_bc79e16e7d26/lightsmith"
mat = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(mat.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (barberini-d1420-1/barberini).

# ... load mat as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=mat)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=436, stop_nm=656, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About D1420 1: S 4020 (BARBERINI)

Barberini GmbH is a German branch of Barberini S.p.A., the Italian company specializing in ophthalmic materials. Barberini GmbH has been formed after Barberini acquired the ophthalmic division of Schott AG in 2010. Barberini GmbH is renowned for its expertise in crafting high-quality optical glass, with a special focus on premium sunglass lenses. Headquartered in Germany, the company has carved a niche in the eyewear market by offering lenses that excel in optical clarity, durability, and ultraviolet protection. Utilizing mineral glass as a base material and incorporating advanced treatments like anti-reflective coatings, polarization, and photochromic technologies, Barberini caters to a discerning clientele that prioritizes both quality and performance. Their lenses find applications in high-end eyewear as well as specialized optical systems, making Barberini a leader in the premium optics industry. Given their commitment to quality and innovation, Barberini GmbH has become the lens of choice for several prestigious eyewear brands seeking to provide their customers with unparalleled optical excellence.

Other names: D1420_1

API: /v1/materials/mat_44b32fc8a444 · slug barberini-d1420-1