Position detecting device

Details Position detecting device Position detecting device

1992-04-30

1993-10-26

Gellner, Michael L.

3542891, 35419512, G03B 118, G03B 1300

Patent

active

052570533

ABSTRACT:
A position detecting arrangement for detecting the position of a movable member relative to a reference position. The arrangement is particularly adapted for use in connection with electronically controlled cameras which include a zoom lens and includes a code information carrier which is able to transmit information indicative of a plurality of codes, at least one of the codes being used a plurality of times for identifying more than one position of the zoom lens, i.e., more than one focal length of the lens. The use of such "relative" codes permits the camera to be made more compact. However, the disclosed invention includes an arrangement for retaining a given number of "position" codes which correspond to the actual position of the lens, to thereby enable the camera to retain a given degree of accuracy in its object-distance-measuring unit for focusing the zoom lens.

REFERENCES:
patent: 4397533 (1983-08-01), Naruse et al.
patent: 4540262 (1985-09-01), Nakai et al.
patent: 4575212 (1986-03-01), Kitaura et al.
patent: 4639108 (1987-01-01), Sakai et al.
patent: 4724465 (1988-02-01), Ishimura et al.
patent: 4740064 (1988-04-01), Kono et al.
patent: 4864344 (1989-09-01), Arakawa et al.

Affiliated with

Also associated with

Rating

Position detecting 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 Position detecting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Position detecting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-962346