Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Application grantedgrantedCritical
Publication of FR865716ApublicationCriticalpatent/FR865716A/fr
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V5/00—Refractors for light sources
F21V5/10—Refractors for light sources comprising photoluminescent material
Landscapes
Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
FR865716D1940-02-071940-02-07Procédé et dispositif pour entretenir la luminosité des corps phosphorescents
ExpiredFR865716A
(fr)