Light emitting unit and optical film assembly thereof
OwnerWen-Jyh SAHinventor
Life of this patent
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Abstract
An optical film assembly is applied to a light emitting unit which has at least two light sources for emitting light beams respectively. The optical film assembly includes a first prism element and a first diffusion element. The first prism element, which is a sheet thinner than 0.5 mm, has a first substrate and at least one first prism layer disposed on the first substrate. The first diffusion element, which is a sheet thinner than 0.5 mm, is disposed adjacent to the first prism element. The light beams are emitted to the first prism element or the first diffusion element directly. The light sources have a plurality of projection points which are projected to a light-emitting surface of the optical film assembly. The gain of each projection point is less than 1.
Claims20
An optical film assembly for a light emitting unit, wherein the light emitting unit has at least two light sources emitting light beams respectively, the optical film assembly comprising:
- a first prism element having a first substrate and at least one first prism layer disposed on the first substrate, wherein the first prism element is a sheet thinner than 0.5 mm;
- and
- a first diffusion element disposed adjacent to the first prism element, wherein the first diffusion element is a sheet thinner than 0.5 mm;
- wherein the light beams are emitted to the first prism element or the first diffusion element directly, the light sources have a plurality of projection points projected to a light-emitting surface of the optical film assembly, and the gain of each of the projection points is less than 1.
A light emitting unit, comprising:
- at least two light sources emitting light beams respectively;
- and
- an optical film assembly disposed adjacent to the light sources, wherein the light beams are emitted to the optical film assembly directly, the light sources have a plurality of projection points projected to a light-emitting surface of the optical film assembly, and the gain of each of the projection points is less than 1, the optical film assembly comprising:
- a first prism element having a first substrate and at least one first prism layer disposed on the first substrate, wherein the first prism element is a sheet thinner than 0.5 mm;
- and
- a first diffusion element disposed adjacent to the first prism element, wherein the first diffusion element is a sheet thinner than 0.5 mm.
Dependencies are inferred from the claim text.