EP 0389717 A2 19901003 - Ultraviolet ray-shielding agent and tube.
Title (en)
Ultraviolet ray-shielding agent and tube.
Title (de)
Ultraviolettstrahlenschutz und Rohr.
Title (fr)
Agent et tube de protection contre les rayons ultraviolets.
Publication
Application
Priority
JP 7387489 A 19890328
Abstract (en)
Disclosed is an ultraviolet ray-shielding agent for selectively shielding ultraviolet rays while allowing a transmission of visible rays therethrough, comprising a visible ray-transmitting binder and extremely fine zinc oxide particles having an average size of 0.1 mu m or less in a mixing ratio of the zinc oxide particles to the binder of 1/10 to 10/1, and an ultraviolet ray-shielding tube for visible ray-irradiation luminescent lamps comprising a transparent substrate tube for sealing a light emission source therein, and a coating formed on a surface of the substrate tube and comprising the above-mentioned ultraviolet ray-shielding agent.
IPC 1-7
IPC 8 full level
H01J 9/20 (2006.01); H01J 61/35 (2006.01); H01J 61/40 (2006.01); H01K 1/32 (2006.01); H01K 3/00 (2006.01)
CPC (source: EP)
H01J 61/40 (2013.01)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0389717 A2 19901003; EP 0389717 A3 19910424; EP 0389717 B1 19960911; DE 68927166 D1 19961017; DE 68927166 T2 19970220; HK 1000298 A1 19980220; JP H02253554 A 19901012
DOCDB simple family (application)
EP 89312420 A 19891129; DE 68927166 T 19891129; HK 97101855 A 19970926; JP 7387489 A 19890328