-
公开(公告)号：US12001012B2
公开(公告)日：2024-06-04
申请号：US17238596
申请日：2021-04-23
发明人： Davide Terzi , Gianluca Mendicino , Dadi Sharon
IPC分类号： G02B26/10 , B81B3/00 , G02B26/08 , G09G3/34 , H02N2/10 , H02N2/14 , H03H9/15 , H10N30/20 , H10N30/853
CPC分类号： G02B26/101 , B81B3/0021 , G02B26/0858 , G09G3/346 , H02N2/103 , H02N2/145 , H03H9/15 , H10N30/204 , B81B2201/032 , H10N30/8554
摘要： Disclosed herein is a microelectromechanical (MEMS) device, including a rotor and a first piezoelectric actuator mechanically coupled to the rotor. The first piezoelectric actuator is electrically coupled between a first signal node and a common voltage node. A second piezoelectric actuator is mechanically coupled to the rotor, and is electrically coupled between a second signal node and the common voltage node. Control circuitry includes a drive circuit configured to drive the first and second piezoelectric actuators, a sense circuit configured to process sense signals generated by the first and second pizeoelectric actuators, and a multiplexing circuit. The multiplexing circuit is configured to alternate between connecting the drive circuit to the first piezoelectric actuator while connecting the sense circuit to the second piezoelectric actuator, and connecting the drive circuit to the second piezoelectric actuator while connecting the sense circuit to the first piezoelectric actuator.
-
公开(公告)号：US11809013B2
公开(公告)日：2023-11-07
申请号：US16900002
申请日：2020-06-12
申请人： TDK TAIWAN CORP.
发明人： Jungsuck Ryoo , Pai-Jui Cheng , Chao-Chang Hu , Min-Hsiu Tsai , Shu-Shan Chen , Chieh-An Chang
CPC分类号： G02B7/04 , G02B27/646 , G03B5/00 , G03B13/36 , H02N2/103 , H02N2/142 , G03B2205/0007 , G03B2205/0061
摘要： An optical system is provided. The optical system includes a first optical module. The first optical module includes a fixed portion, a movable portion, a driving assembly, and a circuit assembly. The movable portion is movably connected to the fixed portion, and the movable portion is used to connect to an optical element. The driving assembly is used to drive the movable portion to move relative to the fixed portion. The circuit assembly is electrically connected to the driving assembly.
-
公开(公告)号：US11626815B2
公开(公告)日：2023-04-11
申请号：US17014997
申请日：2020-09-08
发明人： Zhijun Yang , Jianbin Huang , Yutai Wei , Zhongyi Gao , Guanxin Huang , Youdun Bai
摘要： A novel high-precision rigid-flexible coupling rotating platform includes a foundation, a rigid bearing, a bearing sleeve, a core rotating platform, a rotating driver and a coder; the bearing sleeve is fixed on the foundation; the rigid bearing is in rotatable drive connection with the core rotating platform, and connected with the foundation through the bearing sleeve; an upper surface of the core rotating platform is provided with a plurality of groups of flexible hinges; when the rotating driver applies a driving force to rotate the core rotating platform, the driving force elastically deforms the flexible hinge rings. The flexible hinges are used and disposed on the upper surface of the core rotating platform; without disassembling the whole rotating platform, a corresponding group of flexible hinges can be changed but an assembling relationship between other groups of flexible hinges cannot be broken.
-
公开(公告)号：US20220413248A1
公开(公告)日：2022-12-29
申请号：US17939739
申请日：2022-09-07
申请人： TDK TAIWAN CORP.
发明人： Chao-Hsi WANG , Chao-Chang HU , Chih-Wei WENG , He-Ling CHANG
IPC分类号： G02B7/00 , G02B7/02 , H04N5/232 , G02B7/04 , G02B27/64 , G03B5/00 , G03B13/36 , H02N2/10 , H02N2/14 , G03B3/10
摘要： An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a first driving assembly, and a positioning element. The movable portion is movably disposed on the fixed portion and comprising an optical element. The optical element moves in a first direction. The first driving assembly is at least partially disposed on the fixed portion. The positioning element is rotatably disposed on the fixed portion or the movable portion. When the first driving assembly is not activated, the positioning element is used to limit the position of the movable portion relative to the fixed portion to a limit position, and the positioning element comprises a main body and a limiting portion extending from the main body in a second direction that is perpendicular to the first direction. The limiting portion passes through the optical element.
-
公开(公告)号：US11527970B2
公开(公告)日：2022-12-13
申请号：US16827870
申请日：2020-03-24
发明人： Makoto Murakami
摘要： A control method of a piezoelectric driving device which includes a vibrator including a piezoelectric element and vibrating by application of a drive signal to the piezoelectric element, a driven unit moving by the vibration of the vibrator, a drive signal generation unit generating the drive signal based on a pulse signal, the control method including: stopping the application of the drive signal to the piezoelectric element at the time when a driving speed of the driven unit is a reference speed, in a case of stopping driving of the driven unit.
-
公开(公告)号：US11522474B2
公开(公告)日：2022-12-06
申请号：US16688248
申请日：2019-11-19
发明人： Kei Suefuji
摘要： A vibration wave motor includes a vibrator, a contact body to be brought into contact with the vibrator, a shaft fixed to the contact body, and a fixing member configured to fix the contact body and the shaft from the shaft side.
-
公开(公告)号：US20220376635A1
公开(公告)日：2022-11-24
申请号：US17748062
申请日：2022-05-19
发明人： Takao MIYAZAWA
摘要： A piezoelectric resonator includes a vibrating part having a pair of principal surfaces in an obverse-reverse relationship, and a side surface configured to couple the pair of principal surfaces to each other, and a protruding part which is provided to the vibrating part, and is configured to transmit a drive force generated by a vibration of the vibrating part to a driven part, wherein the vibrating part has a pair of vibrating plates including a first vibrating plate and a second vibrating plate stacked on one another in afirst direction in which the pair of principal surfaces are arranged side by side, the first vibrating plate has a flexural vibrating piezoelectric element configured to flexurally vibrate the vibrating part in a third direction perpendicular to a second direction in which the driven part and the protruding part are arranged side by side in a plan view of the principal surfaces, either one or both of the first vibrating plate and the second vibrating plate have a stretching vibrating piezoelectric element configured to make the vibrating part perform a stretching vibration in the second direction, and the side surface is provided with a plurality of terminals electrically coupled to the flexural vibrating piezoelectric element and the stretching vibrating piezoelectric element.
-
公开(公告)号：US20220342205A1
公开(公告)日：2022-10-27
申请号：US17238596
申请日：2021-04-23
发明人： Davide TERZI , Gianluca MENDICINO , Dadi SHARON
摘要： Disclosed herein is a microelectromechanical (MEMS) device, including a rotor and a first piezoelectric actuator mechanically coupled to the rotor. The first piezoelectric actuator is electrically coupled between a first signal node and a common voltage node. A second piezoelectric actuator is mechanically coupled to the rotor, and is electrically coupled between a second signal node and the common voltage node. Control circuitry includes a drive circuit configured to drive the first and second piezoelectric actuators, a sense circuit configured to process sense signals generated by the first and second pizeoelectric actuators, and a multiplexing circuit. The multiplexing circuit is configured to alternate between connecting the drive circuit to the first piezoelectric actuator while connecting the sense circuit to the second piezoelectric actuator, and connecting the drive circuit to the second piezoelectric actuator while connecting the sense circuit to the first piezoelectric actuator.
-
公开(公告)号：US11467364B2
公开(公告)日：2022-10-11
申请号：US16898777
申请日：2020-06-11
申请人： TDK TAIWAN CORP.
发明人： Chao-Hsi Wang , Chao-Chang Hu , Chih-Wei Weng , He-Ling Chang
IPC分类号： H02N2/10 , H02N2/14 , G02B7/00 , G02B7/02 , H04N5/232 , G02B7/04 , G02B27/64 , G03B5/00 , G03B13/36 , G03B3/10
摘要： An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a first driving assembly, and a positioning element. The movable portion is movably disposed on the fixed portion and comprises an optical element, wherein the optical element moves in the first direction. The first driving assembly is at least partially disposed on the fixed portion. The positioning element is rotatably disposed on the fixed portion or the movable portion, wherein when the first driving assembly is not activated, the positioning element is used to limit the position of the movable portion relative to the fixed portion to a limit position.
-
公开(公告)号：US11233465B2
公开(公告)日：2022-01-25
申请号：US16666935
申请日：2019-10-29
发明人： Tomoaki Takahashi
摘要： A piezoelectric drive device has a first piezoelectric vibrator and a second piezoelectric vibrator each include a vibrating portion and a distal end portion in which the distal end portion make elliptic motion by stretching vibration and flexural vibration of the vibrating portion, a driven member driven by the elliptic motion of the distal end portion, a drive signal generation circuit that outputs stretching vibration drive signals to the first piezoelectric vibrator and the second piezoelectric vibrator, a first boosting circuit provided between the first piezoelectric vibrator and the drive signal generation circuit, a second boosting circuit provided between the second piezoelectric vibrator and the drive signal generation circuit, and a control circuit that controls boosting amounts of the stretching vibration drive signals.
-
-
-
-
-
-
-
-
-
搜索结果
396 条记录 (耗时 0.02 秒)
