OPTICAL DEVICE FOR CONCENTRATING THE LIGHT RADIATION EMITTED BY AN ELECTROLUMINESCENT DIODE, AND LIGHT-EMITTING DIODE COMPRISING SUCH A DEVICE

摘要

The invention relates to a device for optically coupling an electroluminescent diode with a radiation sensor such as an optical fiber. The body of the light-emitting diode comprises at least one emitting region 42 in the form of a light-emitting diode. ACTIVE LAYER, WHOSE PART OF THE BRIGHT RADIATION DOES NOT REMAIN FROM THE BODY OF THE DIODE IF IT IS EMITTED UNDER AN INCIDENCE ANGLE TOO HIGH. IN ORDER TO IMPROVE THE OPTICAL PERFORMANCE OF SUCH A DIODE, THE INVENTION PROVIDES TO ASSOCIATE WITH THE EMISSIVE ZONE 42 A LENTICULAR BODY FORMING A HEMI-CYLINDRICAL LENS 11, OR A HEMI-TORIC LENS 32. IN A FORM HAVING A VERY GOOD OPTICAL PERFORMANCE, THE DEVICE INCLUDES A CIRCULAR CENTRAL LENS 31, AND A PLURALITY OF LENSES 32, 33 HEMI-TORIC, CONCENTRIC WITH THE CENTRAL LENS 31, ASSOCIATED WITH EMISSIVE ZONES 42, 43 IN RINGS. / P / p P APPLICATIONS TO ELECTRO-OPTICAL SYSTEMS ON FIBERS, SUCH AS TELECOMMUNICATIONS, OFFICE, COMPUTER. / P