Patent ID: 11499683

Abstract:
A luminaire includes a housing that defines a light output aperture, a backlight apparatus that emits light toward the light output aperture, and an optical sheet of light transmissive material. The optical sheet is adjacent the backlight apparatus and modifies the light before it leaves the light output aperture. The optical sheet forms a first surface and an opposite second surface. At least one of the first surface or the second surface of the optical sheet includes a first spatial region that includes elliptical diffusers oriented predominantly in a first direction, a second spatial region that includes elliptical diffusers oriented predominantly in a second direction that is different from the first direction, and a third spatial region that includes at least one type of optical microstructure selected from the group consisting of Fresnel lenses, v-groove lenses, v-cut lenses, pyramidal lenses, lenticular lenses, donut lenses and conical diffusers.