Microlens array with tailored sag profile
US11994694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2021 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | May 25, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/32316
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device includes a first array of emitters disposed on a substrate and configured to emit respective beams of optical radiation in a direction perpendicular to the substrate. A second array of microlenses is positioned on the substrate in alignment with the respective beams of the emitters, having respective sag profiles that vary over an area of the substrate. The second array includes at least first microlenses in a central region of the substrate and second microlenses in a peripheral region of the substrate, such that the first microlenses have respective first focal powers, while the second microlenses have respective second focal powers, which are less than the first focal powers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.