Lens having multiple conic sections for LEDs and proximity sensors
AssigneeAvago Technologies General IP (Singapore) Pte. Ltd.
InventorsChi Boon Ong, Yufeng Yao, Sze Ping Ong
Life of this patent
Estimating the term…
Abstract
A lens element comprising a base, a plurality of lens sections and a top lens section is disclosed. The plurality of lens sections are formed above a planar parallel to the base with each of the lens sections being positioned rotationally symmetric about an optical axis. The lens sections define a dome shape with every adjoining lens sections being conjugated with each other. A top lens section is formed at the center above the other lens sections and conjugated therewith. All of the lens sections are conjugated with each of its neighboring lens sections. Each of the lens sections has a optical property to direct light towards a target point. The target point may be positioned along the optical axis.
Claims19
A light source package having a die encapsulated by a lens element used for directing light along an optical axis, the lens element comprising:
- a base encapsulating the die;
- a plurality of lens sections formed above and planarly parallel to the base;
- wherein the plurality of lens sections comprise four lens sections having dome shape and the plurality of lens sections are positioned rotationally symmetric about the optical axis with successive lens sections being conjugated;
- a top lens section formed overlappingly above the lens sections and conjugating top portions of the lens sections;
- and,
- a filler section formed at intersections of the top lens section and the plurality of lens sections.
A proximity sensor having a substrate, a transmitter die for emitting light, a receiver die, a first lens element encapsulating the transmitter die, a second lens element encapsulating the receiver die, at least one of the first and second lens elements comprising:
- a base;
- a plurality of lens sections formed above and planarly parallel to the base, the plurality of lens sections being positioned rotationally symmetric about an optical axis perpendicular to the substrate with successive lens sections being conjugated;
- a top lens section overlappingly above the lens sections and conjugating top portions of the plurality of lens sections;
- and,
- a filler section located at intersections of the top lens section and the plurality of lens sections;
- wherein the plurality of lens sections comprise four lens sections having dome shape.
Dependencies are inferred from the claim text.