Photoflash lamp array having shielded switching circuit

Details Photoflash lamp array having shielded switching circuit Photoflash lamp array having shielded switching circuit

1977-06-13

1978-08-01

Padgett, Benjamin R.

Illumination

Photographic lighting

Measuring or indicating

174 685, 361406, 361412, 362 6, 362 11, 362 13, 431 95R, 431 95A, 431 98, G03B 1502

Patent

active

041047052

ABSTRACT:
A flash lamp array having a plurality of flash lamps positioned over a side of a circuit board having thereon circuitry for sequentially flashing the lamps. A metal shield, in the form of a sheet of metal foil or foil-covered paper, is positioned adjacent to the other side of the circuit board and is in contact with a common electrical run on the circuit board by means of a staple through the circuit board. Strips of radiation-sensitive plastic are positioned between the shield and the circuit board to function as electrical insulation, and also function as flash indicators by distorting due to radiation from an adjacent flashing lamp.

REFERENCES:
patent: 3894226 (1975-07-01), Hanson
patent: 3935442 (1976-01-01), Hanson
patent: 3941992 (1976-03-01), Blount et al.
patent: 3980877 (1976-09-01), Cote
patent: 4017728 (1977-04-01), Audesse et al.
patent: 4019043 (1977-04-01), Blount
patent: 4036578 (1977-07-01), Herman

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