To make it possible to rotate a movable part with a desired rotating operation.SOLUTION: A rotating device comprises: a first piezoelectric element 20 that deforms a first elastic deformation part 12 in a folded elastic deformation part; a second piezoelectric element 21 that deforms a second elastic deformation part 13; and a piezoelectric element driving means that applies a first driving voltage signal Va and a second driving voltage signal Vb different from each other to the first piezoelectric element and the second piezoelectric element to deform the first elastic deformation part and the second elastic deformation part, and rotates a movable part around a predetermined axis of rotation. The relationship between a connection position 113 of a signal line 111 of the first driving voltage signal and the first piezoelectric element in the first piezoelectric element, and a connection position 116 of a signal line 115 of the second driving voltage signal Vb and the second piezoelectric element in the second piezoelectric element is in relatively the same relationship or in a symmetric relationship over the entirety of a folded structure.SELECTED DRAWING: Figure 6
【課題】可動部を所望の回動動作で回動させることが可能となる。【解決手段】折り返し弾性変形部における第一弾性変形部12を変形させる第一圧電素子20と、第二弾性変形部13を変形させる第二圧電素子21と、前記第一圧電素子及び前記第二圧電素子に対して互いに異なる第一駆動電圧信号Va及び第二駆動信号Vbを印加することにより前記第一弾性変形部及び前記第二弾性変形部を変形させ、可動部を所定の回動軸回りで回動させる回動装置において、前記第一圧電素子における、前記第一駆動電圧信号の信号線111と前記第一圧電素子との接続位置113と、前記第二圧電素子における、前記第二駆動電圧信号Vbの信号線115と前記第二圧電素子との接続位置116との関係が、前記折り返し構造の全体にわたって相対的に同一又は対称の関係である。【選択図】図6
ROTATING DEVICE, OPTICAL SCANNER, AND IMAGE DISPLAY DEVICE
回動装置、光走査装置及び画像表示装置
2020-07-27
Patent
Electronic Resource
Japanese
IPC: | H10N / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B81B Mikrostrukturbauelemente oder -systeme, z.B. mikromechanische Bauelemente , MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS |
OPTICAL SCANNER, IMAGE DISPLAY DEVICE, AND OBJECT DEVICE
European Patent Office | 2017
|OPTICAL SCANNER, METHOD FOR FIXING SUBSTRATE IN OPTICAL SCANNER, IMAGE DISPLAY DEVICE, AND VEHICLE
European Patent Office | 2016
|OPTICAL SCANNER, IMAGE DISPLAY DEVICE, HEAD-MOUNTED DISPLAY, AND HEAD-UP DISPLAY
European Patent Office | 2018
|