1983-03-25
1986-05-06
Corbin, John K.
350423, G02B 964, G02B 15177
Patent
active
045867933
ABSTRACT:
A zoom lens having a lst lens component of negative power counting from front, and a 2nd lens component of positive power, with an air separation therebetween being varied to effect zooming, wherein said 2nd component is divided into two components one of which is made movable for focusing, thus minimizing the bulk and size of the entire system, while still achieving good correction of aberrations.
REFERENCES:
patent: 4198128 (1980-04-01), Ogino
patent: 4465343 (1984-08-01), Horimoto
Ikemori Keiji
Tanaka Tsunefumi
Canon Kabushiki Kaisha
Corbin John K.
Gass Rebecca D.
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