1983-02-22
1984-05-08
Corbin, John K.
G02B 1304, G02B 1514
Patent
active
044471351
ABSTRACT:
An improved wide angle zoom lens system of an inverted telephoto type having a negative object side lens group and a positive image side lens group is provided, in which an air space to be varied in accordance with the shift of the object side lens group for focusing is located at the image side of a negative component in the object side lens group.
REFERENCES:
patent: 4099846 (1978-07-01), Kawamura et al.
Corbin John K.
Gass Rebecca D.
Minolta Camera Kabushiki Kaisha
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