Patent ID: 8716739
Filing Date: 2014-05-06
Classification: G01S,H01L

Abstract:
1. An electronic package, comprising: a substrate slice having a front face and a rear face; an emitting integrated circuit chip having a rear face fixed onto the front face of the substrate slice and comprising an optical light radiation emitter; a receiving integrated circuit chip having a rear face fixed onto the front face of the substrate slice and comprising at least one main optical light radiation sensor and a secondary optical light radiation sensor; a case having a bottom and a peripheral wall, said case covering said emitting integrated circuit chip and receiving integrated circuit chip at a distance, an edge of the peripheral wall being fixed to the front face of the substrate slice, the bottom of the case having a main opening above the main optical light radiation sensor and a secondary opening above the optical light radiation emitter; a bead of an opaque material interposed between the case and the receiving integrated circuit chip and passing between the main optical light radiation sensor and the secondary optical light radiation sensor and delimiting a chamber containing the secondary optical light radiation sensor and the optical light radiation emitter, said bead of opaque material optically isolating chamber from the main optical light radiation sensor and the main opening; wherein said secondary opening emerges into said chamber.