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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co LtdfiledCriticalRicoh Co Ltd
Priority to JP14848280ApriorityCriticalpatent/JPS5772109A/ja
Priority to DE19813142133prioritypatent/DE3142133A1/de
Publication of JPS5772109ApublicationCriticalpatent/JPS5772109A/ja
G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
G02B7/28—Systems for automatic generation of focusing signals
G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
Landscapes
Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Computer Vision & Pattern Recognition
(AREA)
General Physics & Mathematics
(AREA)
Optics & Photonics
(AREA)
Automatic Focus Adjustment
(AREA)
JP14848280A1980-10-231980-10-23Motor control circuit
PendingJPS5772109A
(en)