A lens driving method for correcting linearity of a lens and a lens driving device therefor

A driving device is disclosed. The driving device includes a Hall sensor and a PID control part. The current position value of a lens is determined based on the output voltage of the Hall sensor. An error value that is the difference between an input target position value and the current position va...

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Bibliographische Detailangaben
Hauptverfasser:	JANG SEON WOONG, KIM DONG WON, JUNG HUY CHAN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	A driving device is disclosed. The driving device includes a Hall sensor and a PID control part. The current position value of a lens is determined based on the output voltage of the Hall sensor. An error value that is the difference between an input target position value and the current position value is calculated. Based on the current position value and the error value, a final gain multiplied by the error value input to the PID control part is determined. 홀 센서 및 PID 제어부를 포함하며, 상기 홀 센서의 출력전압을 기초로 렌즈의 현재 위치값을 결정하도록 되어 있고, 입력된 목표 위치값과 상기 현재 위치값 간의 차이값인 에러값을 산출하도록 되어 있고, 그리고 상기 현재 위치값과 상기 에러값을 기초로, 상기 PID 제어부에 입력되는 상기 에러값에 곱해지는 최종이득을 결정하도록 되어 있는, 구동장치를 공개한다.