U.S. Philips Corporation

Johnny Wilhelmus Van Der Velden

Pieter Hendrik Broerse

Markus Wilhelm Wanninkhof

A flash array which is provided with a transparent electrically conductive layer which serves to prevent spontaneous ignition of a flash lamp in the device. The flash array is provided with high voltage combustion flash lamps and the transparent electrically conductive layer consisting of conductive indium oxide which is applied to the inner side of a transparent cover of the array. The resistance per square of that layer is smaller than 100 kOhm, so that for these lamps -- which are, for example, ignited by means of a piezo element -- substantially no spontaneous ignition occurs.

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Eindhoven, Netherlands

Johnny Wilhelmus Van Der Velden