Illumination – Edge lighted panel – Light modifier for edge lit light source
Reexamination Certificate
2007-02-06
2007-02-06
Ward, John Anthony (Department: 2875)
Illumination
Edge lighted panel
Light modifier for edge lit light source
C362S626000, C362S628000
Reexamination Certificate
active
10511972
ABSTRACT:
A compact backlight system has a light-emitting panel (1) with a front wall (2), a rear wall (3) situated opposite thereto, and furthermore, between the front and the rear wall (2, 3), a translucent input edge surface (4) for coupling light into the light-emitting panel (1). A light source (6, 6′, . . . ) is associated with the input edge surface (4). According to the invention, the rear wall (3) in a first portion (12) of the light-emitting panel (1) is provided with a multiplicity of steps (13, 13′, . . . ), and a second portion (22) of the light-emitting panel (1) widens from the input edge surface (4) in a direction facing the first portion (12). Preferably, a surface (17) of the steps (13, 13′, . . . ) facing the input edge surface (4) makes an angle βav≧5° (with respect to a normal on a bisecting plane (20) bisecting the light-emitting panel (1).
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Hoelen Christoph Gerard August
Pfeffer Nicola Bettina
Koninklijke Philips Electronics , N.V.
Makiya David
Ward John Anthony
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