Light source with integrated monitor photodetector and diffuser
US12149045B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2023 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Mar 2, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0617
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light source includes a substrate with a first surface and an opposite second surface. An epitaxial layer is positioned on the first surface of the substrate. The light source also includes at least one light generator in the epitaxial layer positioned such that an optical signal transmitted thereby is directed toward the substrate. A diffuser is positioned on the second surface of the substrate, and at least one monitor photodetector is positioned in the epitaxial layer in an arrangement configured to receive a portion of the optical signal which is reflected by the diffuser. In one form, the light generator may include a vertical cavity surface emitting laser (VCSEL).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.