Patent №
US 4,387,975
Granted
1983-06-14
Filed 1980
Owner
RICOH COMPANY, LTD., A CORP. OF JAPAN
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
06201528
An automatic focusing position detection apparatus of a double image overlapping type having a plurality of photoelectric element groups capable of detecting rays of light from an object separately, which can detect the focusing position from the output signals from the photoelectric element groups, and which includes a shifting circuit capable of shifting the output signals from one photoelectric element group relative to the output signals of other photoelectric group, and a circuit for calculating the defocusing distance by obtaining the correlation degree of the output signals of the photoelectric element groups which are shifted relatively to each other by the shifting circuit, and by obtaining the shift distance by the shifting circuit.
AI classification
Ownership
RICOH COMPANY, LTD., A CORP. OF JAPAN
assignment · 38340171
Assignors
ARAKI KUNIHIKO
On an employer assignment, the assignors are typically the inventors.