Optical system and imaging device

An optical apparatus having a look-up table provided with control information for controlling an optimum variable optical-property optical element in accordance with a combination of a distance to an object with a zoom state, wherein said distance to the object and said zoom state are found, data of said look-up table are input, with said distance to the object and said zoom state obtained therefrom as a key, to find corresponding control information, and said control information obtained therefrom is used to control a drive of a variable optical-property optical element.

An optical apparatus having a look-up table provided with control information for controlling an optimum variable optical-property optical element in accordance with a combination of a distance to an object with a zoom state, wherein said distance to the object is found, said look-up table is retrieved, with said distance to the object obtained therefrom as a key, to one-dimensionally extract a corresponding zoom state, and a variable optical-property optical element is driven on control information where a sharpness of an image formed on control information corresponding to a one-dimensionally extracted zoom state is maximized within tolerances.

An optical apparatus having a look-up table provided with control information for controlling an optimum variable optical-property optical element in accordance with a combination of a distance to an object with a zoom state, wherein said zoom state is found, said look-up table is retrieved, with said zoom state obtained therefrom as a key, to one-dimensionally extract a corresponding distance to an object, and a variable optical-property optical element is driven on control information where a sharpness of an image formed on control information corresponding to a one-dimensionally extracted distance to an object is maximized within tolerances.

An optical apparatus having a look-up table provided with control information for controlling an optimum variable optical-property optical element in accordance with a combination of a distance to an object with a zoom state, wherein data of said look-up table are input in turn to find corresponding control information and a variable optical-property optical element is driven on control information where a sharpness of an image formed on control information obtained therefrom is maximized within tolerances.

An optical apparatus having a look-up table provided with control information for controlling a variable optical-property optical element fabricated, with an amount of shift of a focus position caused by a change of a distance to an object or zooming as a key, wherein said look-up table is scanned and said control information of said variable optical-property optical element is determined in a state where a sharpness of an image is maximized within tolerances so that said variable optical-property optical element is driven.

An optical apparatus having a look-up table provided with control information for controlling a variable optical-property optical element fabricated, with an amount of shift of a focus position caused by a change of a distance to an object or zooming as a key, wherein said amount of shift is found and said control information of said variable optical-property optical element is determined with a value of said look-up table corresponding to said amount of shift so that said variable optical-property optical element is driven.

An optical apparatus having a look-up table provided with control information for controlling an optimum variable optical-property optical element in accordance with one of a distance to an object and a zoom state, wherein a drive of a variable optical-property optical element is controlled on said control information obtained from said look-up table or a predetermined calculation process is executed on said control information obtained from said look-up table, and information obtained from said calculation process is used to control the drive of said variable optical-property optical element.

An optical apparatus having a look-up table provided with control information for controlling an optimum variable optical-property optical element in accordance with one of a distance to an object and a zoom state, wherein one of said distance to the object and said zoom state is found, data of said look-up table are input, with one of said distance to the object and said zoom state obtained therefrom as a key, to find corresponding control information, and said control information obtained therefrom is used to control a drive of a variable optical-property optical element.

An optical apparatus having a look-up table provided with control information for controlling an optimum variable optical-property optical element in accordance with one of a distance to an object and a zoom state, wherein data of said look-up table are input in turn to find corresponding control information and a variable optical-property optical element is driven on control information where a sharpness of an image formed on control information obtained therefrom is maximized within tolerances.