Lens having multiple conic sections for LEDs and proximity sensors
US8558161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2010 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Nov 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/853
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.