Wide angle zoom lens

Details Wide angle zoom lens Wide angle zoom lens

1983-04-25

1985-07-09

Corbin, John K.

G02B 1514, G02B 960

Patent

active

045278679

ABSTRACT:
A wide angle zoom lens contains, in order from an object side, a first group having a negative focal length, a second group having a positive focal length and a third group having a negative focal length as well as a fourth and a fifth group each of which have a positive focal length. When the lens is moved to effect zooming from the side having a short focal length to a side having a long focal length either the first group is first moved toward the final image plane on an optical axis in a first movement phase and then moved toward the object in a second phase of movement or the first group is moved toward the image with each of the movements being executed in a non-linear fashion to correct variation of a focal length. The second group is monotonically moved towards the object to effect magnetization while the third group remains immovable and the fourth group is monotonically moved toward the object at a rate relatively slower than the second group to effect magnetization while the fifth group also remains immoble.

Affiliated with

Also associated with

Rating

Wide angle zoom lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-906380