Patent ID: 9036260
Filing Date: 2015-05-19
Classification: G02B,G03B,H04N

Abstract:
1. A lens holder driving device comprising: an auto-focusing lens holder driving portion moving a lens holder holding a lens barrel along an optical axis; and an image stabilizer portion stabilizing image blur by moving said auto-focusing lens holder driving portion in first and second directions which are orthogonal to the optical axis and which are perpendicular to each other, wherein said auto-focusing lens holder driving portion comprises: a focusing coil fixed to said lens holder; a permanent magnet comprising a plurality of permanent magnet pieces which have first surfaces opposed to said focusing coil and which are disposed outsides of said focusing coil with respect to the optical axis in a radial direction so as to oppose to each other in the first direction and the second direction; a magnet holder, disposed around the periphery of said lens holder, holding said permanent magnet, said magnet holder having first and second ends opposite to each other in a direction of the optical axis; and first and second leaf springs, mounted to the first and the second ends of said magnet holder, supporting said lens holder in the direction of the optical axis shiftably so as to position said lens holder in the radial direction, wherein said image stabilizer portion comprises: a fixed portion disposed apart from said auto-focusing lens holder driving portion in the direction of the optical axis at a position in the vicinity of said second leaf spring; a supporting member swingably supporting said auto-focusing lens holder driving portion in the first direction and the second direction with respect to said fixed portion; an image stabilizer coil comprising a plurality of image stabilizer coil portions mounted on said fixed portion so as to oppose second surfaces of said plurality of permanent magnet pieces that are perpendicular of to the first surfaces, said image stabilizer coil comprising specific image stabilizer coil portions, among said plurality of image stabilizer coil portions, disposed in the first direction and the second direction, each of said specific image stabilizer coil portions being divided into a plurality of coil parts so as to separate in a longitudinal direction of said permanent magnet piece opposed thereto; and a plurality of Hall elements disposed on said fixed portion at positions where each of said specific image stabilizer coil portions are separated into said plurality of coil portions.