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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Publication of ES254020A1publicationCriticalpatent/ES254020A1/en
H01J61/38—Devices for influencing the colour or wavelength of the light
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J61/00—Gas-discharge or vapour-discharge lamps
H01J61/02—Details
H01J61/30—Vessels; Containers
H01J61/34—Double-wall vessels or containers
Landscapes
Vessels And Coating Films For Discharge Lamps
(AREA)
Abstract
An electric discharge lamp, in particular for street or road lighting, comprising a high pressure metallic vapor discharge pipe in a gas-tight sealed container, characterized by the fact that a transparent screen, which It surrounds the discharge tube, and provided with one or more layers of luminescent material, it is located in the vicinity of said tube, while parts of the ampoule of the discharge lamp are provided with a mirror. (Machine-translation by Google Translate, not legally binding)
ES0254020A1958-12-111959-12-07Improvements in electric discharge lamps
ExpiredES254020A1
(en)
Improvements in the construction of lamps for iluminating elements of luminous material with body of hermetic lamp. (Machine-translation by Google Translate, not legally binding)
Improvements in sources of light comprising in combination a high-pressure metal-vapour electric discharge device and an electric incandescent filament
Some improvements to raise the luminosity of signal lamps, of small dimensions, containing neon gas or other rare gases (Machine-translation by Google Translate, not legally binding)