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US 6,188,527 B1Granted
LED array PCB with adhesive rod lens
AssigneeHewlett-Packard Company
InventorDavid D Bohn
Life of this patent
Estimating the term…
Abstract
The inventive lens is formed from an optical adhesive is used to collect light from a LED array. As the adhesive is dispensed, it is formed into the shape of a lens. The adhesive is then cured, and a lens is formed that covers the LED array. The inventive lens collects light that is emitted by the LEDs at extreme angles and directs the light to the scan location.
Claims11
A method for forming a light collection lens on a board, wherein the board is a printed circuit board that includes a plurality of light emitting diodes (LEDs) arranged in an array, comprising the steps of:
- dispensing an optical adhesive onto the array;
- forming a lens shape with the adhesive by maintaining the lens shape via the surface tension characteristic of the adhesive wherein the lens shape is a cylindrical lens shape;
- and
- curing the adhesive in the lens shape to form the light collection lens.
1 more element
Dependencies are inferred from the claim text.