Light-triggered semiconductor device

Claim 1

A light-triggered thyristor which comprises: at least one light-triggered semiconductor chip having a light-sensitive area; means for providing an airtight enclosure for said at least one light-triggered semiconductor chip; transparent means proximate the periphery of said air-tight enclosure means for receiving light, said transparent means positioned outside an area directly above said light-sensitive area; guide means for projecting light within said airtight enclosure means an onto said light-sensitive area, said guide means having a first end connected to said transparent means, a second end connected adjacent to said light-sensitive area and an intermediate portion between said first and second ends, wherein said second end includes an elastic transparent material fitted thereon and wherein said said second end has a larger transverse section than said light-sensitive area; and a light guide-locating assembly for locating said transverse section to project light therefrom substantially uniformly onto all of said light sensitive area and having a fixed member attached to said chip, said fixed member being positioned around at least a portion of said guide means proximate said second end, said locating assembly also having a flexible member enveloping at least a substantial portion of both said guide means and said fixed member, while engaging at least a portion of said fixed member.