초록 ▼

An automatic focusing control system includes a focus detecting light detector, a rangefinder, a lens driver, a manual range setting unit, a mode setting unit, and a control unit. When a manual mode is selected by the mode setting unit, the control unit applies a lens driving signal from the manual

An automatic focusing control system includes a focus detecting light detector, a rangefinder, a lens driver, a manual range setting unit, a mode setting unit, and a control unit. When a manual mode is selected by the mode setting unit, the control unit applies a lens driving signal from the manual range setting unit to the lens driver unit to drive a lens. When an automatic mode is selected by the mode setting unit, the control unit operates the lens driver unit to drive the lens based on a measured distance at the time distance measurement is possible, applies the lens driving signal from the manual range setting unit to the lens driver unit at the time distance measurement is impossible, and operates the lens driver unit to drive the lens based on the measured distance at the time distance measurement becomes possible from a condition in which distance measurement is impossible.

대표청구항 ▼

An automatic focusing control system for use in a camera having a photographic lens, comprising: a focusing detecting light detector for detecting light that has passed through the lens; range finder means responsive to an output from said light detector for measuring the defocus distance of an obje

An automatic focusing control system for use in a camera having a photographic lens, comprising: a focusing detecting light detector for detecting light that has passed through the lens; range finder means responsive to an output from said light detector for measuring the defocus distance of an object to be photographed by the camera and for ascertaining whether a distance measurement is possible or not; lens driver means for driving the lens; manual range setting means which is manually operable for generating a lens driving signal; mode setting means for selecting one of a manual and automatic mode; timing means for establishing a period of time; and control means for applying the lens driving signal from said manual range setting means to said lens driver means when the manual mode is selected by said mode setting means, said control means being operable, when the automatic mode is selected by said mode setting means, for operating said lens driver means to drive the lens based on the defocus distance when a distance measurement is possible, for applying the lens driving signal from said manual range setting means to said lens drive means when a distance measurement is impossible during said period of time, and when the automatic mode is selected by said mode setting means for operating said lens driver means to drive the lens based on the measured distance when a distance measurement becomes possible during the application of the lens driving signal from said manual range setting means when the distance measurement is impossible.