High throughput illuminator
US4206494A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1978 |
| Grant date | Jun 3, 1980 |
| Priority date | — |
| Expiry date | Sep 5, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/402
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A relatively high percentage of the light given off by a source lamp is gathered by four collector lens systems disposed around the lamp. The desired wavelength components of the light gathered by each lens system are directed by a dichroic mirror toward the system axis and into a respective focusing lens system, while longer wavelengths are transmitted by each mirror to a heat sink. The light from each focusing lens system is directed to the entrance face of a respective sub-bundle of a fiber optic combining system. The entrance face of each sub-bundle is inclined off axis to receive the incident light. The sub-bundles then bend and join each other in alignment with the system axis to transmit the combined light to a single exit face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.