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.)
Expired
Application number
GB2505438A
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.)
PEARCE SIGNS Ltd
Original Assignee
PEARCE SIGNS Ltd
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 filed by PEARCE SIGNS LtdfiledCriticalPEARCE SIGNS Ltd
Priority to GB2505438ApriorityCriticalpatent/GB519719A/en
Publication of GB519719ApublicationCriticalpatent/GB519719A/en
H01J61/38—Devices for influencing the colour or wavelength of the light
H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
Landscapes
Vessels And Coating Films For Discharge Lamps
(AREA)
Abstract
519,719. Discharge lamps. PEARCE, J. H. G., and PEARCE SIGNS, Ltd. Aug. 25, 1938, No. 25054. [Class 39 (i)] In order that in a discharge lamp with luminescent material on the inner surface of the envelope or on surfaces within it the luminescent material may be in actual contact with the discharge the tube is filled with neon at a pressure of 10.1-20 mm. and the tube is of comparatively small diameter, preferably from 4-8 mm.
GB2505438A1938-08-251938-08-25Improvements in and relating to electric discharge lamps
ExpiredGB519719A
(en)