EP 0296535 A2 19881228 - Low-pressure arc discharge lamp having increased surface brightness.
Title (en)
Low-pressure arc discharge lamp having increased surface brightness.
Title (de)
Niederdruckbogenentladungslampe mit erhöhter Oberflächenhelligkeit.
Title (fr)
Lampe à arc à décharge à basse pression à luminosité de surface élevée.
Publication
Application
Priority
US 6497887 A 19870622
Abstract (en)
An arc discharge lamp having a sealed envelope including a major body portion and at least one minor transverse end portion. A phosphor layer within the sealed envelope subtends the major body portion of the envelope. The surface brightness of the phosphor layer as viewed through the minor transverse end portion of the envelope is greater than the intensity of the external surface brightness of the phosphor layer on the major body portion of the envelope during operation of the lamp. A lamp array for use as an element in a picture display is also disclosed including a plurality of sealed envelopes. In the case of a color presentation of information, one picture element is composed of three sealed envelopes phosphor coated with the primary colors red, green and blue.
IPC 1-7
IPC 8 full level
H01J 61/32 (2006.01); H01J 61/35 (2006.01); H01J 61/42 (2006.01); H01J 61/94 (2006.01)
CPC (source: EP)
H01J 61/325 (2013.01); H01J 61/35 (2013.01); H01J 61/42 (2013.01); H01J 61/94 (2013.01)
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0296535 A2 19881228; EP 0296535 A3 19901107; EP 0296535 B1 19950705; DE 3854103 D1 19950810; DE 3854103 T2 19960307; JP S6481161 A 19890327
DOCDB simple family (application)
EP 88109861 A 19880621; DE 3854103 T 19880621; JP 15134388 A 19880621