Lamp life meter and endoscope light source unit
US6307332A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Mar 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light source having a lamp for generating light generates a lamp on signal at an output terminal thereof when the lamp is lit. A lamp life meter is connected to the light source for detecting the time that the lamp has been lit. The lamp life meter includes a housing having at least one contact terminal adapted to be coupled to the output terminal of the light source, a clock generator located in the housing and generating clock signals, a counter located in the housing and counting the clock signals whenever the clock on signal indicates that the lamp is on and a display mounted in the housing for displaying an indication of the time the lamp has been turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.