Control techniques for optical image stabilizing system

Author

Sato, Koichi ; Ishizuka, Shigeki ; Nikami, Akira ; Sato, Mitsuru

Author_Institution

Sony Corp., Tokyo, Japan

Volume

39

Issue

3

fYear

1993

Firstpage

461

Lastpage

466

Abstract

A novel optical image stabilizer was implemented on a consumer video camera. Novel feedback servo techniques were developed in order to control the nonlinear, unstable, variable fluid prism. As a result better frequency response was achieved. The system has the following features: (1) maintenance of picture resolution and (2) compensation for the fluctuation in optically zoomed pictures. When the new servo techniques are used, the prism´s control is stable regardless of the prism´s position and the temperature. These new techniques made it possible to develop an optical image stabilizing system whose stabilization rate is good

Keywords

feedback; optical prisms; servomotors; telecommunications control; video cameras; consumer video camera; feedback servo; frequency response; optical image stabilizing system; picture resolution; prism control; stabilization rate; temperature; Cameras; Control systems; Fluctuations; Frequency response; Nonlinear optics; Optical control; Optical feedback; Optical variables control; Servomechanisms; Temperature control;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.234621

Filename

234621