Zoom lens system capable of constant magnification photography

Details Zoom lens system capable of constant magnification photography Zoom lens system capable of constant magnification photography

1978-08-28

1980-03-18

Henry, Jon W.

Optics: motion pictures

Removable film strip magazine type

352 85, G02B 1517, G02B 710

Patent

active

041936671

ABSTRACT:
A constant magnification zoom lens system is provided that has the capability of permitting a predetermined desired constant magnification of an image during a zoom operation. A variator lens group for varying the focal length of the lens system and a compensator lens group for controlling the position of an image formed by the lens system is provided. Pairs of cam and follower assemblies can be provided in the barrel mechanism to control the movement of the respective compensator lens group and variator lens group so that the position of an image of a fixed object is maintained within a predetermined depth of focus in a normal zooming mode of operation and also the position of an image of a moving object can be maintained within a predetermined depth of focus in response to any variation of focal length to provide a constant magnification photography mode.

REFERENCES:
patent: 4083057 (1978-04-01), Quinn

Affiliated with

Also associated with

Rating

Zoom lens system capable of constant magnification photography does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zoom lens system capable of constant magnification photography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens system capable of constant magnification photography will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1121883