초록 ▼

A lens controlling apparatus includes a lens-driving stepping motor, a driving current forming circuit for forming a driving current waveform to be supplied to the stepping motor, an inputting circuit for inputting a stop instruction to stop the lens-driving stepping motor, a stopping circuit for pe

A lens controlling apparatus includes a lens-driving stepping motor, a driving current forming circuit for forming a driving current waveform to be supplied to the stepping motor, an inputting circuit for inputting a stop instruction to stop the lens-driving stepping motor, a stopping circuit for performing the operation of stopping the stepping motor in accordance with the stop instruction, a phase detecting circuit for detecting the phase of the driving current waveform to be supplied to the stepping motor, and an inhibiting circuit for inhibiting the stop instruction from being executed except when the phase of the driving current waveform detected by the phase detecting circuit is a predetermined phase.

대표청구항 ▼

[ What is claimed is:] [1.]1. A lens controlling apparatus comprising:(a) a lens system having a lens group and an iris;(b) an actuator for moving the lens group;(c) a stepping motor for driving said lens group;(d) detecting means for detecting a state of the iris; and(e) control means for controlli

[ What is claimed is:] [1.]1. A lens controlling apparatus comprising:(a) a lens system having a lens group and an iris;(b) an actuator for moving the lens group;(c) a stepping motor for driving said lens group;(d) detecting means for detecting a state of the iris; and(e) control means for controlling said stepping motor by a micro-steps driving operation and controlling to decide a stopping phase of said stepping motor on the basis of the state of said iris detected by said detecting means.