History of Science and Engineering Annotation << Back Optrons and optoelectroncs microcircuits («Not coherent optoelectronics») Y.R. Nosov The history of optocoupler development at the «Sapphire» and in the country as a whole is recounted. The optimality of the «Sapphire» scientific-technical concept put into the optoelectronic project is substantiated; its implementation led to creation of the optoelectronic subbranch of the electronic industry of the country. Key words: optoelectronics; optron; optically-coupled pair; voltage isolation. Pp. 70-77