High-voltage switch having series-connected light-responsive semiconductor elements and light concentrating means for the semiconductor elements

摘要

PCT No. PCT/DE91/00711 Sec. 371 Date Jan. 26, 1993 Sec. 102(e) Date Jan. 26, 1993 PCT Filed Sep. 6, 1991 PCT Pub. No. WO92/07188 PCT Pub. Date Mar. 30, 1992.A high-voltage switch (18) with light sensitive zones is described which transmits the high voltage to the spark plugs. In order to transmit the light energy with the minimum possible loss from the light emitting element (20) to the light sensitive zones of the high-voltage switch (18), a light concentrating device is provided in a transition region from the light emitting element to the light sensitive zone. The light concentrating device can be a glass rod which acts as a lens or a light guide including optical fibers.