Automatic focusing device

Details Automatic focusing device Automatic focusing device

1992-03-13

1993-01-12

Adams, Russell E.

354402, G03B 1336

Patent

active

051794071

ABSTRACT:
An automatic focus device for a camera which comprises a phototaking lens for forming the image of an object on a predetermined plane, a focus detection device for detecting the amount of defocus of the image plane of the phototaking lens with respect to the predetermined plane, a lens position detecting device for detecting the position of the phototaking lens, an in-focus lens position determining device for determining an in-focus lens position to which the phototaking lens is to be focused, from said defocus amount and said lens position, a lens movement pattern memory device for storing, as lens movement pattern information, the relationship between the lens position and time for focusing the phototaking lens to a particular moving object and a lens drive controller device for controlling the lens position in such a manner that the movement of the phototaking lens as a function of time coincides with the lens movement pattern information, and compensating the position-time relationship of the phototaking lens and the lens movement pattern information, based on the in-focus lens position.

REFERENCES:
patent: 4931820 (1990-06-01), Matsuzun et al.

Affiliated with

Also associated with

Rating

Automatic focusing device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic focusing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic focusing device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1223239