초록 ▼

A high aspect ratio light fixture has an optical window with a light extraction film therein. The light extraction film has a plurality of linear prisms facing the interior of the light fixture. In one embodiment of the invention the prisms are triangular in shape while in another they are four side

A high aspect ratio light fixture has an optical window with a light extraction film therein. The light extraction film has a plurality of linear prisms facing the interior of the light fixture. In one embodiment of the invention the prisms are triangular in shape while in another they are four sided.

대표청구항 ▼

A high aspect ratio light fixture comprising an enclosure having an optical window, said light fixture comprising: transparent light extraction film in said optical window, said light extraction film having a base layer defining a plane and having a structured surface facing the interior of said enc

A high aspect ratio light fixture comprising an enclosure having an optical window, said light fixture comprising: transparent light extraction film in said optical window, said light extraction film having a base layer defining a plane and having a structured surface facing the interior of said enclosure, said surface having linear prisms thereon, each of said prisms having two sides adjacent to said plane, the projections of which meet at a relatively narrow angle and two sides more distant from said plane which meet at a relatively wide angle; and a light source at one end of said enclosure for emitting light such that said light will enter said prisms, be totally internally reflected and emerge through said second surface.