Discharge lamp lighting device, projector, and driving method of discharge lamp
US8400068B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 2010 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Jul 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2928
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In at least one embodiment of the disclosure, a discharge lamp lighting device comprises a discharge lamp driving section and a control unit. The control unit alternately performs a first DC driving processing and a first AC driving processing in a first portion of the driving current. The control unit alternately performs a second DC driving processing and a second AC driving processing in a second portion of the driving current different from the first portion. The control unit performs the first AC driving processing and the second AC driving processing such that a frequency of a first alternating current and a frequency of a second alternating current have different values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.