Light engine systems and methods for combining low and high etendue light
US12222519B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2021 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Jul 19, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3628
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A first light source with a first etendue generates a first light beam to travel along a first optical path having an expanded portion formed by a collector optical system. A second light source having a second etendue less than one tenth of the first etendue forms second light, which is conducted by a light guide having a distal section with an end face. The second light is emitted from the end face as a second light beam that travels over a second optical path that resides within the expanded portion of the first optical path due to the light guide being disposed relative to the first optical path from an off-axis direction. An optical condenser receives and directs the first and second light beams to a common exit plane to form the combined light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.