Mirror-carrying flash lamp
US6339279B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1999 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Oct 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a flash lamp in which an emission of an arc is generated by cooperation of a cathode (8), an anode (9), trigger probe electrodes (12, 13), and a sparker electrode (16) which are contained in an envelope (H) having a light projection window (4), and this emission is emitted from the light projection window (4), a mirror structure (20, 30, 40) is fixed at an inner end portion of an exhaust pipe (21, 34, 44) secured to the center of a stem (6) disposed at a bottom portion of the envelope (H). The mirror structure (20, 30, 40) comprises a mirror surface (24, 32, 42), contained in the envelope (H), facing the light projection window (4), and an exhaust path (26, 33, 43), formed at a position inside the mirror structure (20, 30, 40) separated from the mirror surface (24, 32, 42), communicating an exhaust port (21c, 34b, 44b) of the exhaust pipe (21, 34, 44) and the exterior of the mirror structure (20, 30, 40) to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.