LENS HOLDER DEVICE
PROBLEM TO BE SOLVED: To provide a lens holder device with a magnet having an improved shape.SOLUTION: A lens holder device includes; a lens holder (50) having a first coil (80) surrounding an outer circumference of a lens; a magnet unit (40) having a first magnet portion (43) that includes a first...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a lens holder device with a magnet having an improved shape.SOLUTION: A lens holder device includes; a lens holder (50) having a first coil (80) surrounding an outer circumference of a lens; a magnet unit (40) having a first magnet portion (43) that includes a first surface (43a) facing the first coil, and a second magnet portion (45) that includes a second surface (45a) perpendicular to the first surface and constitutes a magnetic domain separate from that of the first magnet portion; springs (30, 60) which couple the lens holder and the magnet unit in a relatively movable manner in an optical axis direction; and a base unit (19) having a second coil (82a) facing the second surface. The first magnet portion and the second magnet portion are portions of an integral body. A lens holder unit (18) comprising the lens holder, the magnet unit, and the springs is held in a relatively movable manner in a direction perpendicular to the optical axis direction relative to the base unit.
【課題】マグネットの形状を改良したレンズ保持装置を提供する。【解決手段】レンズの外周に配置された第1コイル(80)を備えるレンズホルダ(50)と、前記第1コイルに対向する第1面(43a)を含む第1マグネット部分(43)と、前記第1面に垂直な第2面(45a)を含み前記第1マグネット部分とは異なる磁区を構成する第2マグネット部分(45)と、を有するマグネット部(40)と、前記レンズホルダと前記マグネット部とを、光軸方向へ相対移動可能に接続するスプリング(30,60)と、前記第2面に対向する第2コイル(82a)が備えられるベース部(19)と、を有し、前記第1マグネット部分と前記第2マグネット部分とは一体に繋がっており、前記レンズホルダと、前記マグネット部と、前記スプリングとを有するレンズ保持ユニット(18)を、前記ベース部に対し前記光軸方向と垂直な方向へ相対移動可能に保持してあるレンズ保持装置。【選択図】図6 |
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