Light source unit
US7108399B2 · kind B2 · utility
2Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Jun 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/2054
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light source unit includes a substrate mounting a plurality of light emitting diodes (LED's) for irradiating beam to an object. The substrate is formed of a material having high heat conductivity and the unit includes a chip resistor mounted on the substrate and heat generation controller for heating the substrate with heat generated in the chip resistor upon supply of power to the chip resistor. The plural LED's are arranged in the form of an array on the substrate and a plurality of the chip resistors are arranged linearly along the array of LED's.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.