Control mechanism for optical system with independently movable

Details Control mechanism for optical system with independently movable Control mechanism for optical system with independently movable

1975-05-27

1977-02-22

Sacher, Paul A.

G02B 1516

Patent

active

040089517

ABSTRACT:
A varifocal objective with two independently movable components is adjustable by a reversible master motor positively coupled with a screw drive for one component and with a movable part of a position sensor which emits pulses of varying density during displacement of that component for the stepping of a reversible slave motor driving the other component according to a predetermined positional relationship. The position sensor may comprise a movable scanner, e.g. a slotted disk, coacting with a fixed carrier of optically readable markings such as a glass rod; alternatively, it may include a movable signal carrier such as a perforated tape coacting with a stationary reader. If the second component is to move bidirectionally upon unidirectional displacement of the first one, the carrier is provided with a supplemental track coacting with a separate pick-up head to control a reversing switch in the operating circuit of the slave motor.

REFERENCES:
patent: 2782683 (1957-02-01), Walker

Affiliated with

Also associated with

Rating

Control mechanism for optical system with independently movable does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control mechanism for optical system with independently movable , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control mechanism for optical system with independently movable will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-321699