Multibeam array of top emitting VCSEL elements
US9065239B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2013 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Jun 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2304/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A top emitting VCSEL array may be coupled to a separate heat spreading superstrate that may be positioned above the apertures of the array and that may be able to transmit the emitted beams through the heat spreading superstrate. The VCSEL devices in the array may be controlled by an electrical connection to a pattern of conductive elements positioned in close contact with, but electrically isolated from, the heat spreading superstrate. The conductive elements may electrically control one or more of the VCSEL devices to enable sectional control of the light output. The elements may also be arraigned in a ground-signal-ground or coplanar waveguide configuration to improve the frequency response of the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.