| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and method for hand shake correction etc., that are reliable against a fault etc., and make the structure of an optical device simple. SOLUTION: A couple of prisms 3 and 4 which are made of electrooptic effect substances and refract incident light to different X and Y directions are arranged one behind the other between an imaging lens 1 and a CCD 2. A hand shake occurred on a device is detected by acceleration sensors separately in the X and Y directions and hand shake quantities in the X and Y directions are calculated from detection signals respectively. Control voltages corresponding to the calculated hand shake quantities are applied to a couple of linear prisms 3 and 4, whose refractive indexes are varied to move the optical axis O of incident light to the CCD 2 so that the hand shake is canceled (corrected). Consequently, a blur of an optical image occurred on an imaging plane of the CCD 2 can be prevented without any mechanical operation. As the couple of prisms 3 and 4 , one-surface linear prisms each having a plurality of vertexes on one of a light incidence surface and a light emitting surface are used to make an optical system part small-sized. COPYRIGHT: (C)2006,JPO&NCIPI |
