Patent ID: 6169578
Filing Date: 2001-01-02
Classification: G02B

Abstract:
A video camera arranged to carry out a magnifying power varying action on a zoom lens while keeping a variator lens and a focus lens thereof in a predetermined relation, comprising: a) storing means for storing information on driving speeds at which said variator lens is to be driven at respective different positions of said variator lens along an optical axis; b) position detecting means for detecting positions of said variator lens and of said focus lens along said optical axis; and c) control means for driving said variator lens and said focus lens according to driving information of said variator lens and focus lens read out from said storing means on the basis of a result of detection made by said position detecting means, so that a driving speed of said variator lens is decreased in a predetermined region adjacent a telephoto end position of said zoom lens and a driving speed of said focus lens is a substantially constant speed similar to a normal region during said variator lens being driven through the predetermined region adjacent a telephoto end position.