Patent ID: 9012826
Filing Date: 2015-04-21
Classification: G01J,H01L,H04B

Abstract:
1. An optocoupler package, comprising: first and second input signal terminals; first and second output terminals; third and fourth output terminals; a layer of dielectric optically semi-reflective and transmissive material having an upper surface and a lower surface; a light emitting diode (LED) operably connected to the first and second input signal terminals and configured to emit infrared or near-infrared light in proportion to at least one predetermined characteristic of the input signals; a first photodetector operably connected to the first and second output terminals and configured to provide LED feedback control signals thereacross, and a second photodetector operably connected to the third and fourth output terminals and configured to provide isolated output signals thereacross; wherein the LED and the first photodetector are both located above the upper surface of the layer of dielectric semi-reflective material, the second photodetector is located beneath the lower surface of the layer of dielectric semi-reflective material, and the layer of dielectric semi-reflective material is configured to reflect a first portion of light generated by the LED and incident upon the upper surface thereof towards the first photodetector thereby to provide the feedback control signals therefrom and to transmit a second portion of light generated by the LED through the upper and lower surfaces thereof for detection by the second photodetector thereby to provide the isolated output signals therefrom.