Corrugated lens LED light band
AssigneeLektron LED Technologies, LLC
InventorLarry G. Ward, Jr.
Life of this patent
Estimating the term…
Abstract
An LED light band has a thin elongated housing with an open front face covered by an elongated transversely corrugated polycarbonate lens having crests and nadirs spaced at a first predetermined interval. A linear array of LEDs extending behind and along the bottom edge of the lens are spaced at a second predetermined interval different from the first. Because of the difference in the intervals, the light dispersion from the lens appears to the eye to be random so that, for example, a red lens can be used to suggest the presence of licking flames. The polycarbonate lens can be made by pressing long narrow lengths of flat polycarbonate in a sheet metal press.
Claims3
For making an elongated polycarbonate lens having transverse corrugations with crests and nadirs at a predetermined interval, a method comprising the steps of:
- starting with a roll of flat polycarbonate stock;
- unrolling the flat polycarbonate stock in sequential increments into a press having a die contoured to impress the transverse corrugations with crests and nadirs at a predetermined interval;
- pressing each increment unrolled into the die press to impress the transverse corrugations with crests and nadirs at a predetermined interval into the increment;
- relaxing the press to release the pressed increment and receive the next unrolled increment of polycarbonate stock;
- and
- winding the released increments of pressed polycarbonate stock onto a coiler as they exit the press.
Dependencies are inferred from the claim text.