Focusing method for zoom lens

Details Focusing method for zoom lens Focusing method for zoom lens

1988-11-14

1989-06-20

Arnold, Bruce Y.

350428, G02B 1518

Patent

active

048404683

ABSTRACT:
The disclosed zoom lens has at least three components and three components are made movable for zooming to different object distances by axially moving two of said components as a unit.

REFERENCES:
patent: 3817600 (1974-06-01), Watanabe et al.
patent: 4198126 (1980-04-01), Abe et al.
patent: 4516839 (1985-05-01), Tokumaru

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