Motor drive lens shifting system for use in autofocus camera

Details Motor drive lens shifting system for use in autofocus camera Motor drive lens shifting system for use in autofocus camera

1982-05-13

1984-09-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

354402, G03B 310

Patent

active

044737432

ABSTRACT:
A motor drive lens shifting system includes a picture taking lens, a drive device for driving the lens, a light receiving element for receiving light which has passed through the lens and forming an image thereon, a focus condition detector for detecting the focus condition of the image whether it is front-focus, in-focus or rear-focus, and a control device for controlling the drive device relatively to the detected focus condition such that the drive device first shifts the lens in a wide pitch to roughly adjust the lens position, and then, in a small pitch in steps to precisely adjust the lens position. The steps become gradually small in the manner of geometric progression.

REFERENCES:
patent: 4249073 (1981-02-01), Stauffer et al.
patent: 4269491 (1981-05-01), Hagyuda et al.
patent: 4333007 (1982-06-01), Langlais et al.
patent: 4414469 (1983-11-01), Ogasawara

Affiliated with

Also associated with

Rating

Motor drive lens shifting system for use in autofocus camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor drive lens shifting system for use in autofocus camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor drive lens shifting system for use in autofocus camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1770800