Flash device

Details Flash device Flash device

1981-09-03

1983-09-13

Gluck, Irwin

Illumination

Photographic lighting

Including specific light modifier

313111, 362 18, 431365, F21K 502, G03B 1502

Patent

active

044046189

ABSTRACT:
A flash device of the type in which the flash tube is coated with a trigger electrode and is positioned in contact with the back metal constituting part of the reflector so that when the trigger signal is applied directly to the back metal, the flash tube is triggered. In this type of flash device the back metal constituting part of the reflector is configured to a round shape. Because of the necessity of insuring good light distribution it is generally made of bright alloy aluminum. This not only makes it difficult to finely adjust the position of the flash tube relative to the back metal and electrically connect the trigger wire lead with the back metal, but also gives rise to a problem of electrically insulating the back metal from the other metallic parts since a very high voltage for triggering is applied to the back metal. The present invention provides a flash device which has solved the various problems by providing the back metal with embossed portions to adjust the position of the flash tube, by pressure-setting the connection of the trigger wire lead with the back metal, and by applying an electrically insulating coating on the back surface of the back metal.

REFERENCES:
patent: 3127112 (1964-03-01), McCammon et al.
patent: 3484597 (1969-12-01), Schmidt
patent: 4136378 (1979-01-01), Chevali
patent: 4223372 (1980-09-01), Takematsu

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