Zoom lens having small distortion

Details Zoom lens having small distortion Zoom lens having small distortion

1978-10-17

1979-09-18

Sacher, Paul A.

350176, G02B 1514

Patent

active

041681100

ABSTRACT:
A zoom lens having small distortion including a front lens group having a negative focal length and a rear lens group having a positive focal length, the front and rear lens groups being mechanically movable to vary the overall focal length while maintaining the image position constant.

REFERENCES:
patent: 3848969 (1974-11-01), Tajima
patent: 4074931 (1978-02-01), Okudaira

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