Light emitting diode signs and translucent plastic sheets...

Details Light emitting diode signs and translucent plastic sheets... Light emitting diode signs and translucent plastic sheets...

G - Physics

09

F

G09F 9/33 (2006.01) G09F 13/12 (2006.01) H05B 33/00 (2006.01)

Patent

CA 2428966

Disclosed is a polished translucent co-extruded sheet having utility as a light diffusing protective cover or sign face for light emitting diode (LED) light sources and other purposes. The sheet is comprised of (a) a particle layer containing particles having a mean particle size of about 4 to 100 microns and having a particle size distribution of between 1-110 microns, at a loading of 1 to 60% melt blended with a thermoplastic matrix, wherein the particle and matrix have refractive indices that differ by greater than 0.001 units of each other when measured in conformance with ASTM D 542; and (b) at least one substrate layer comprised of thermoplastic compositions, wherein the substrates have a refractive index within 0.2 units of the refractive index of the particle layer matrix when measured in conformance with ASTM D 542.

L'invention concerne des feuilles co-extrudées transparentes polies servant de couvercle de protection diffuseur de lumière ou de face de panneau pour des sources de lumière à diodes électroluminescentes (LED) et à d'autres fins. La feuille est composée (a) d'une couche contenant des particules d'une taille moyenne d'environ 4 à 100 microns et d'une composition granulométrique d'entre 1-110 microns, à une capacité de charge de 1 à 60 % obtenue par fusion avec une matrice thermoplastique. La particule et la matrice ont des indices de réfraction qui diffèrent de plus de 0,001 unité l'un par rapport à l'autre, selon une mesure conforme à ASTM D 542; et (b) au moins une couche de substrat composée de compositions thermoplastiques, lesdits substrats ayant un indice de réfraction dans la limite de 0,2 unités de celui de la matrice de la couche de particules, selon une mesure conforme à ASTM D 542.

Affiliated with

Also associated with

Rating

Light emitting diode signs and translucent plastic sheets... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light emitting diode signs and translucent plastic sheets..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light emitting diode signs and translucent plastic sheets... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1846063