US 12,247,911 B2
Apparatus for artificial weathering comprising two kinds of light emission sources
Matt McGreer, Mt Prospect, IL (US); Oliver Rahäuser, Linsengericht-Altenhaßlau (DE); and Jörn Jahnke, Linsengericht-Altenhaßlau (DE)
Assigned to ATLAS Material Testing Technology GmbH, Linsengericht-Atlenhassalu (DE)
Filed by ATLAS Material Testing Technology GmbH, Linsengericht-Altenhaßlau (DE)
Filed on Mar. 31, 2022, as Appl. No. 17/710,186.
Claims priority of application No. 21172040 (EP), filed on May 4, 2021.
Prior Publication US 2022/0357002 A1, Nov. 10, 2022
Int. Cl. G01N 17/00 (2006.01); F21S 8/00 (2006.01); F21Y 113/00 (2016.01); F21Y 113/20 (2016.01)
CPC G01N 17/004 (2013.01) [F21S 8/006 (2013.01); G01N 17/002 (2013.01); F21Y 2113/20 (2016.08); F21Y 2113/30 (2023.05)] 20 Claims
OG exemplary drawing
 
1. An apparatus for artificial weathering or lightfastness testing of samples, the apparatus comprising:
a weathering chamber; and
no more than two light sources provided in the weather chamber, wherein:
a first light source of the no more than two light sources consists of one or more fluorescent ultraviolet (UV) lamps each comprising an emission spectrum with a maximum wavelength below a predetermined wavelength; and
a second light source of the no more than two light sources consists of one or more light emitting diodes each comprising an emission spectrum with a maximum wavelength above the predetermined wavelength.