EP 1313985 A2 20030528 - AUXILIARY OPTICS FOR OUTDOOR LED VIDEO PANELS
Title (en)
AUXILIARY OPTICS FOR OUTDOOR LED VIDEO PANELS
Title (de)
VORSATZOPTIK FÜR OUTDOOR-LED-VIDEO-PANEELE
Title (fr)
OPTIQUE AUXILIAIRE POUR PANNEAUX VIDEO A LED DE PLEIN AIR
Publication
Application
Priority
- AT 0100275 W 20010824
- AT 14602000 A 20000824
Abstract (en)
[origin: WO0217628A2] A video panel is disclosed, fitted with LEDs of precise SMD construction, comprising an auxiliary optic for open-air display, which improves the visibility and contrast of the display in any incident sunlight conditions, whereby a mirroring and reflection of the sunlight is avoided in the observed region and at the same time a good light distribution is achieved. A light guide rod (3) is arranged directly in front of each LED (2), the cross-sectional direction and orientation of which, relative to the LED (2), is such that the total incident useful light is transmitted by total reflection on the walls (5) and directed into the observed region (B) and incident sunlight (7) cannot reach the LED (2), either due to multiple total reflection in the incident direction or by being returned outside the observed region (B), or by impinging the walls (5) of the light guide rods (3) at a steeper angle than the limiting angle for total reflection, escaping there and being absorbed by a surrounding housing (9). Further, interfering surface reflections are avoided by correspondingly angled light emitting surfaces (6).
IPC 1-7
IPC 8 full level
H04N 5/72 (2006.01); H04N 5/74 (2006.01); H04N 9/30 (2006.01)
CPC (source: EP)
G09F 9/33 (2013.01); G09F 27/008 (2013.01); H04N 5/72 (2013.01); H04N 9/30 (2013.01); H04N 9/3141 (2013.01)
Citation (search report)
See references of WO 0217628A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0217628 A2 20020228; WO 0217628 A3 20020725; AU 8556101 A 20020304; EP 1313985 A2 20030528
DOCDB simple family (application)
AT 0100275 W 20010824; AU 8556101 A 20010824; EP 01964714 A 20010824