EP 0191264 B2 19931006 - NON-BLINDING DEVICE FOR LARGE-AREA LIGHTING FIXTURES
Title (en)
NON-BLINDING DEVICE FOR LARGE-AREA LIGHTING FIXTURES
Publication
Application
Priority
DE 8504325 U 19850213
Abstract (en)
[origin: US4669034A] A non-glare screen is assembled of prismatic rings stacked one on the other and coaxially enclosing a light emitting surface. Each ring has a cross-section of a right triangle. One leg of the triangle is perpendicular to the axis of the light emitting surface and the hypoteruse forms with the one leg an angle between 35 DEG to 45 DEG , preferably 40 DEG .
IPC 1-7
IPC 8 full level
F21V 5/02 (2006.01); F21V 9/40 (2018.01); F21V 13/02 (2006.01); F21V 17/00 (2006.01)
CPC (source: EP US)
F21V 5/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
US 4669034 A 19870526; AT E56804 T1 19901015; AU 5001785 A 19860821; AU 578326 B2 19881020; DE 3579806 D1 19901025; DE 8504325 U1 19850704; EP 0191264 A2 19860820; EP 0191264 A3 19880713; EP 0191264 B1 19900919; EP 0191264 B2 19931006; JP H0375963 B2 19911204; JP S61188805 A 19860822
DOCDB simple family (application)
US 79658185 A 19851108; AT 85730137 T 19851004; AU 5001785 A 19851118; DE 3579806 T 19851004; DE 8504325 U 19850213; EP 85730137 A 19851004; JP 25296285 A 19851113