US 7,116,502 B2 · Optical apparatus

Abstract

An optical apparatus is disclosed which can control a position of a driven member with precision using a simple control algorithm. The optical apparatus includes an actuator, a driven member, a transmission mechanism for transmitting a driving force from the actuator to the driven member, a first detector for detecting driving of the actuator and for outputting a signal corresponding to a detection result, a second detector for detecting driving of the driven member and for outputting a signal corresponding to a detection result, and a controller for controlling the actuator, wherein the controller determines, after activating the actuator, one of the first and second detectors which the one outputs a signal corresponding to a predetermined driving amount earlier, and controls the actuator based on the signal from the one that has been determined.

Claims8

Dependent claims

An optical apparatus comprising:

an actuator;
a driven member;
a transmission mechanism for transmitting a driving force from said actuator to said driven member;
a first detector for detecting a driving amount of said actuator and for outputting a signal corresponding to a detection result;
a second detector for detecting a driving amount of said driven member and for outputting a signal corresponding to a detection result;
and
a controller for controlling said actuator,
wherein said controller determines, after activating said actuator, one of said first and second detectors which outputs a signal corresponding to a predetermined driving amount earlier, and controls said actuator based on the signal output from the determined detector.

5 more elements

Dependencies are inferred from the claim text.

Optical apparatus

Life of this patent

Optical apparatus

Life of this patent

Abstract

Claims8