Patent ID: 8950921
Filing Date: 2015-02-10
Classification: F21S,F21V,F21Y,G02B

Abstract:
1. A thin LED flat luminaire, comprising: a LED bar having at least one light emitting diode disposed thereon; an optical stack having an edge that abuts the LED bar, including, from top to bottom, a flat baseboard, a flat reflection panel for receiving light from the LED bar, a flat acrylic panel having a top surface and a bottom surface, the top surface facing the flat reflection panel, the top surface having a mask pattern printed thereon, the mask pattern for filtering light transmitted from the flat reflection panel into the flat acrylic panel for providing a uniform transmission of the light from the acrylic panel across the bottom surface of the flat acrylic panel, and a flat diffusion panel configured to receive the light from the bottom surface of the flat acrylic panel and emit the light into a space to be illuminated.