Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co LtdfiledCriticalNEC Corp
Priority to JP2844179ApriorityCriticalpatent/JPS55121423A/ja
Priority to US06/132,481prioritypatent/US4359268A/en
Publication of JPS55121423ApublicationCriticalpatent/JPS55121423A/ja
Publication of JPS6227698B2publicationCriticalpatent/JPS6227698B2/ja
Optical system for transmitting and receiving two independent signals over a single electromagnetic carrier wherein the rotational orientation of the receiver is independent of the angular position of the transmitter