Multilamp photoflash unit having grounded reflector
US4268891A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1978 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Sep 13, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10181
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A photoflash unit comprising a plurality of high-voltage type flashlamps mounted on a printed circuit board containing circuitry for sequentially igniting the flashlamps in response to successive high-voltage firing pulses applied thereto. One lead-in wire of each of the flashlamps is connected to a common circuit conductor. An electrically conductive reflector unit is positioned between the lamps and the circuit board. The reflector unit is grounded to the common circuit conductor by means of a dried paste of conductive material disposed at the interface between the reflector and common conductor. In this manner, the reflector unit functions as an electrostatic shield for the circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.