JCIPRNET
Variable magnification optical system and control method thereof
There are provided a variable magnification optical system and a control method thereof which are capable of relatively accurately adjusting a positional relationship between a variable magnification optical device and an imaging surface of an imaging device according to a zoom amount. A zoom lens included in the variable magnification optical device is positioned at a telephoto end and a wide angle end, and shift amounts ΔS1 and ΔS2, tilt angles θ1 and θ2, rotation angles ϕ1 and ϕ2, and focusing adjustment amounts Δ1 and Δ2 of the variable magnification optical device are set by a user and are stored. In a case where a zoom amount of the zoom lens is set to a desired value by the user, a shift amount corresponding to the set zoom amount is calculated by using the stored shift amounts ΔS1 and ΔS2. The positional relationship between the variable magnification optical device and the imaging surface of the imaging device is adjusted so as to have the calculated shift amount.
FUJIFILM Corporation
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Takayuki Yoshitaka Shinichi
Matsuura Mori Shimotsu