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.)
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 filedfiledCritical
Priority to JP6962588UpriorityCriticalpatent/JPH01173623U/ja
Publication of JPH01173623UpublicationCriticalpatent/JPH01173623U/ja
Position tracking system using a radiation director which directs radiation from a radiation source onto a radiation sensor, depending on the position of the radiation source