AUTOMATIC FOCUSING POSITION DETECTION APPARATUS

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.

VisionG02B 7/346G02B 27/16

AI classification

Vision0.85
Speech0.01
Natural language0.00
AI hardware0.00
Planning0.00
Evolutionary computation0.00
Machine learning0.00
Knowledge representation0.00

Ownership

RICOH COMPANY, LTD., A CORP. OF JAPAN

assignment · 38340171

Assignors

ARAKI KUNIHIKO

On an employer assignment, the assignors are typically the inventors.

From the same owner

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