Zoom lens

Details Zoom lens Zoom lens

1992-10-26

1994-06-07

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

359649, G02B 1514

Patent

active

053194950

ABSTRACT:
A zoom lens includes, from the image side to the subject side, a first lens group having a negative overall power and a second lens group having a positive overall power. The lens groups are movable relative to each other in opposite directions so as to increasingly and decreasingly change an axial air spacing between the two lens groups, thereby continuously varying the focal length of the zoom lens. The zoom lens satisfies the following conditions:

REFERENCES:
patent: 5005955 (1991-04-01), Ohshita

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