초록 ▼

An automatic focus condition detecting device comprising an objective lens; a unit for receiving light from an object through the objective lens; a focus detecting unit responsive to the output of the receiving unit for detecting a focusing condition of the objective lens; a unit responsive to the o

An automatic focus condition detecting device comprising an objective lens; a unit for receiving light from an object through the objective lens; a focus detecting unit responsive to the output of the receiving unit for detecting a focusing condition of the objective lens; a unit responsive to the output of the receiving unit for judging whether or not it is possible for the focus detecting unit to detect a focusing condition of the objective lens; a lens position detecting unit for detecting whether or not the objective lens is positioned within a predetermined range included in the lens driving range; a unit for driving the objective lens; and a unit for controlling the driving unit to drive the objective lens when the judging judges that it is impossible for the focus detecting unit to detect a focusing condition and, moreover, the lens detecting unit detects that the objective lens is positioned within the predetermined range, for the purpose of a search a lens position where the focus detecting unit can detect a focusing condition.

대표청구항 ▼

An automatic focus condition detecting device comprising: an objective lens; means for receiving light from an object through said objective lens; a focus detecting means responsive to the output of said receiving means for detecting a focusing condition of said objective lens; means responsive to t

An automatic focus condition detecting device comprising: an objective lens; means for receiving light from an object through said objective lens; a focus detecting means responsive to the output of said receiving means for detecting a focusing condition of said objective lens; means responsive to the output of said receiving means for judging whether or not it is possible for said focus detecting means to detect a focusing condition of said objective lens; a lens position detecting means for detecting whether or not said objective lens is positioned within a predetermined range included in the lens driving range; means for driving said objective lens when said judging means judges that it is impossible for said focus detecting means to detect a focusing condition, for the purpose of a search for a lens position where said focus detecting means can detect a focusing condition; and means for forbidding said driving means from driving said objective lens when said lens detecting means detects that said objective lens is not positioned within the predetermined range.