Light Assembly for Providing Substantially Uniform Illumination
AssigneeUltravision Technologies, LLC
InventorDavid Siucheong Auyeung
Life of this patent
Estimating the term…
Abstract
A lighting assembly can be used for illuminating a predetermined area. The assembly includes a number of LEDs directed toward the predetermined area and a number of lenses. Each lens is disposed over only one associated LED and is configured to direct light from that LED toward the predetermined area, such that the light from each lens is directed across the entire predetermined area. The light intensity from each lens is substantially uniform across the entire predetermined area.
Claims20
A method of illuminating an area using an apparatus comprising a light assembly that includes a plurality of light emitting diodes (LEDs) and a plurality of optical elements, each optical element associated with one of the plurality of LEDs and each LED is associated with one of the optical elements, the method comprising:
- directing light from the plurality of LEDs toward the area, wherein directing the light comprises directing the light from each LED of the plurality of LEDs through the associated optical element such that light exiting from each optical element of the plurality of optical elements is directed across all of the area;
- and
- wherein each optical element of the plurality of optical elements includes
- a first element comprising a first convex-shaped surface,
- a second element comprising a second convex-shaped surface that intersects with the first convex-shaped surface at an acute angle in a region between the first element and the second element, wherein the light from the associated LED exits the associated optical element through the first and the second convex-shaped surfaces, and
- a third element extending beyond the first convex-shaped element and the second convex-shaped element in a direction away from the associated LED.
A method of illuminating an area, the method comprising:
- directing light towards a display surface of a billboard comprising the area using an apparatus, the apparatus comprising a light assembly that includes a plurality of light emitting diodes (LEDs) and a plurality of optical elements, each optical element associated with one of the plurality of LEDs and each LED is associated with one of the optical elements, wherein directing the light comprises directing the light from each LED of the plurality of LEDs through the associated optical element such that light exiting from each optical element of the plurality of optical elements is directed across all of the area;
- wherein each optical element of the plurality of optical elements comprises
- a first side, a second side opposite the first side, and a third side perpendicular to the first side and the second side,
- a first element disposed at the first side,
- a second element disposed at the second side, and
- a third element disposed at the third side,
- wherein the third element extends beyond the first element and the second element in a direction away from the associated LED of the plurality of LEDs,
- wherein, in the direction away from the associated LED, the first element includes a first convex outer surface and the second element includes a second convex outer surface different than the first outer convex surface, and
- wherein the first convex outer surface has a first peak at a first distance from a point on the associated LED and the second convex outer surface has a second peak spaced from the first peak, the second peak being at a second distance from the point on the associated LED;
- and
- wherein the first convex outer surface and the second convex outer surface connect at a connection region that is at a third distance from the point on the associated LED, wherein the third distance is shorter than the first distance as well as the second distance.
Dependencies are inferred from the claim text.