公开(公告)号：US09431595B2

公开(公告)日：2016-08-30

申请号：US14653803

申请日：2013-12-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Tatsuo Furuta ,  Hiroshi Saito ,  Shinya Koyama ,  Akira Uebayashi ,  Hidenori Tanaka ,  Takeshi Kawano ,  Yoshihiko Matsumura

IPC: H01L41/04 ,  H04N5/217 ,  H02N2/00 ,  H01L41/18 ,  H02N2/10 ,  H04N5/225 ,  H04N5/335 ,  G02B7/10 ,  G02B27/00 ,  H01L41/187 ,  H02N2/16 ,  H01L41/09 ,  H02N2/14 ,  B41J2/14

CPC classification number: H01L41/042 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2202/03 ,  G02B7/102 ,  G02B27/0006 ,  H01L41/0973 ,  H01L41/18 ,  H01L41/1871 ,  H02N2/001 ,  H02N2/103 ,  H02N2/106 ,  H02N2/145 ,  H02N2/163 ,  H04N5/2171 ,  H04N5/2254 ,  H04N5/335

Abstract: A vibration wave driving device including a lead-free piezoelectric material that can be driven with high reliability over a wide operating temperature range, an image pickup device including the vibration wave driving device, and an optical apparatus including the vibration wave driving device are provided. The vibration wave driving device generates a vibration wave by applying an AC voltage to a piezoelectric element, and includes the piezoelectric element and a capacitor that satisfy 20[° C.]≦T∈(Cmax)−T∈(Pmax)≦75[° C.] and 0.50≦∈(Cc)/∈(Cmax)≦0.80.

Abstract translation: 本发明提供一种振荡波驱动装置，其包括可在宽工作温度范围内以高可靠性驱动的无铅压电材料，包括振动波驱动装置的图像拾取装置和包括振动波驱动装置的光学装置。 振动波驱动装置通过向压电元件施加交流电压而产生振动波，并且包括压电元件和满足20 [℃]≤T∈（Cmax）-T∈（Pmax）≤75的电容器。 ℃）和0.50≤∈（Cc）/∈（Cmax）≤0.80。

公开(公告)号：US20150214469A1

公开(公告)日：2015-07-30

申请号：US14606401

申请日：2015-01-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jumpei Hayashi ,  Takayuki Watanabe ,  Akira Uebayashi ,  Kenichi Takeda

IPC: H01L41/18 ,  B06B1/06 ,  H01L41/257 ,  H02N2/00 ,  G02B27/00 ,  H01L41/333 ,  H01L41/187 ,  B41J2/14

CPC classification number: H01L41/257 ,  B06B1/0644 ,  B41J2/14201 ,  C04B35/4682 ,  C04B35/6261 ,  C04B35/62655 ,  C04B35/62695 ,  C04B35/64 ,  C04B2235/3208 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3263 ,  C04B2235/3298 ,  C04B2235/604 ,  C04B2235/6565 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/787 ,  C04B2235/79 ,  G02B27/0006 ,  H01L41/0973 ,  H01L41/1871 ,  H01L41/43 ,  H02N2/163 ,  Y10T29/42

Abstract: A piezoelectric ceramic includes a perovskite-type metal oxide containing barium titanate, and Mn. When a surface thereof along the remanent polarization direction is subjected to X-ray diffraction analysis at room temperature, the ratio of the diffraction intensity of the (002) plane to the diffraction intensity of the (200) plane is 1.0 or more, the diffraction peak of the (002) plane has a half width of 1.2° or less, and the lattice constant of the c-axis thereof and the lattice constant of the a-axis thereof satisfy the relationship 1.004≦c/a≦1.010.

Abstract translation: 压电陶瓷包括含有钛酸钡的钙钛矿型金属氧化物和Mn。 沿着剩余极化方向的表面在室温下进行X射线衍射分析时，（002）面的衍射强度与（200）面的衍射强度的比例为1.0以上，衍射 （002）面的峰值的半值宽度为1.2°以下，其c轴的晶格常数和a轴的晶格常数满足关系1.004＆nlE; c / a＆nlE; 1.010。

公开(公告)号：US20140124695A1

公开(公告)日：2014-05-08

申请号：US14066992

申请日：2013-10-30

Applicant: CANON KABUSHIKI KAISHA

Inventor： Shinya Koyama ,  Yasushi Shimizu ,  Makoto Kubota ,  Akira Uebayashi ,  Hidenori Tanaka

IPC: H01L41/187 ,  H04N5/225 ,  B41J2/14

CPC classification number: H01L41/1871 ,  B08B7/02 ,  B41J2/14233 ,  B41J2/14274 ,  B41J2202/03 ,  C04B35/4682 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3236 ,  C04B2235/3244 ,  C04B2235/3248 ,  C04B2235/3262 ,  C04B2235/5445 ,  C04B2235/72 ,  C04B2235/77 ,  C04B2235/78 ,  C04B2235/786 ,  C04B2235/79 ,  C04B2235/80 ,  G02B27/0006 ,  H01L41/083 ,  H01L41/0973 ,  H02N2/106 ,  H02N2/163 ,  H04N5/2254

Abstract: Provided is a lead-free piezoelectric material having satisfactory and stable piezoelectric constant and mechanical quality factor in a wide practical use temperature range. The piezoelectric material includes a perovskite-type metal oxide represented by Formula (1): (Ba1-xCax)a(Ti1-yZry)O3 (wherein, 1.00≦a≦1.01, 0.125≦x≦0.300, and 0.041≦y≦0.074), Mn, and Mg. The content of Mn is 0.12 parts by weight or more and 0.40 parts by weight or less based on 100 parts by weight of the perovskite-type metal oxide on a metal basis. The content of Mg is 0.10 parts by weight or less (excluding 0 part by weight) based on 100 parts by weight of the perovskite-type metal oxide on a metal basis.

Abstract translation: 提供一种无铅压电材料，其在广泛的实际使用温度范围内具有令人满意且稳定的压电常数和机械品质因数。 压电材料包括由式（1）表示的钙钛矿型金属氧化物：（Ba1-xCax）a（Ti1-yZry）O3（其中1.00和nlE; a＆nlE; 1.01,0.125和nlE; x1n0.300,0.041和n1E; y＆nlE; 0.074），Mn和Mg。 以金属为基准的100重量份钙钛矿型金属氧化物，Mn的含量为0.12重量份以上且0.40重量份以下。 以金属为基准的100重量份钙钛矿型金属氧化物，Mg的含量为0.10重量份以下（不包括0重量份）。

公开(公告)号：US11495732B2

公开(公告)日：2022-11-08

申请号：US16598930

申请日：2019-10-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： Akira Uebayashi ,  Miki Ueda ,  Takanori Matsuda ,  Makoto Kubota

IPC: H01L41/107 ,  H01L41/04 ,  H01L41/187 ,  H01L41/083 ,  H01L41/053

Abstract: A piezoelectric transformer comprises at least a laminate of a first member, a first piezoelectric element, a second piezoelectric element and a second member sequentially stacked one on the other in the above-listed order and a pressurizing mechanism for squeezing the first member and the second member together in the stacking direction. The ratio of the electromechanical coupling coefficient k33 relative to the electromechanical coupling coefficient k31 (k33/k31) of the first piezoelectric element and the second piezoelectric element is not less than 2.0.

公开(公告)号：US11201571B2

公开(公告)日：2021-12-14

申请号：US16086163

申请日：2017-03-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jumpei Hayashi ,  Kenichi Takeda ,  Shinya Koyama ,  Takayuki Watanabe ,  Yasushi Shimizu ,  Tatsuo Furuta ,  Miki Ueda ,  Akira Uebayashi ,  Hidenori Tanaka ,  Makoto Kubota

IPC: H04R17/00 ,  H02N2/00 ,  H01L41/187 ,  H01L41/257 ,  H02N2/02 ,  H01L41/04 ,  H01L41/047 ,  H01L41/09 ,  H01L41/29 ,  H01L41/313 ,  H02N2/06 ,  H02N2/08 ,  G02B7/04

Abstract: Provided is a method of manufacturing an oscillator, including: arranging an electrode on a piezoelectric ceramics free from being subjected to polarization treatment, to thereby provide a piezoelectric element; bonding the piezoelectric element and a diaphragm to each other at a temperature T1; bonding the piezoelectric element and a power supply member to each other at a temperature T2; and subjecting the piezoelectric ceramics to polarization treatment at a temperature T3, in which the temperature T1, the temperature T2, and the temperature T3 satisfy a relationship T1>T3 and a relationship T2>T3.

公开(公告)号：US20210305492A1

公开(公告)日：2021-09-30

申请号：US17345259

申请日：2021-06-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Miki Ueda ,  Takanori Matsuda ,  Tatsuo Furuta ,  Hisato Yabuta ,  Akira Uebayashi

IPC: H01L41/257 ,  H01L41/187 ,  C04B35/49

Abstract: A piezoelectric material having a large electromechanical coupling coefficient is provided. The material is manufactured by a method including the steps of: heating a piezoelectric material having a low-temperature side ferroelectric phase A and a high-temperature side ferroelectric phase B between which the phase of the piezoelectric material transitions according to a temperature change, from room temperature to a temperature range higher than T(B→A) at which temperature a change from the ferroelectric phase B to the ferroelectric phase A occurs in a temperature lowering process and lower than T(A→B) at which temperature a change from the ferroelectric phase A to the ferroelectric phase B occurs in a temperature rising process; starting application of an electric field to the piezoelectric material in a state where it is held within this temperature range; and continuing and finishing the electric field application at a temperature lower than T(A→B).

公开(公告)号：US20200044139A1

公开(公告)日：2020-02-06

申请号：US16525093

申请日：2019-07-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Miki Ueda ,  Takanori Matsuda ,  Makoto Kubota ,  Akira Uebayashi ,  Norihiro Suzuki

IPC: H01L41/107 ,  H01L41/04 ,  H01L41/053

Abstract: There is provided a piezoelectric transformer including a first output terminal, a first piezoelectric element connected to the first output terminal, a second output terminal, a second piezoelectric element connected to the second output terminal, an input terminal, and a third piezoelectric element connected to the input terminal, wherein each of the first and second output terminals is formed to be individually connectable to a corresponding external load and outputs a voltage at a different frequency.

公开(公告)号：US10451833B2

公开(公告)日：2019-10-22

申请号：US15354388

申请日：2016-11-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jumpei Hayashi ,  Akira Uebayashi ,  Tatsuo Furuta ,  Hidenori Tanaka ,  Shinya Koyama ,  Makoto Kubota

IPC: H01L41/09 ,  G02B7/04 ,  B06B1/06 ,  G02B7/08 ,  H01L41/04 ,  H01L41/047 ,  H01L41/187 ,  H02N2/16

Abstract: A vibrator and an ultrasonic motor can exhibit a sufficient drive speed even when using lead-free piezoelectric ceramics. The ultrasonic motor includes an annular vibrator and an annular moving member arranged so as to be brought into pressure-contact with the vibrator. The vibrator includes an annular vibrating plate and an annular piezoelectric element. The piezoelectric element includes an annular piezoelectric ceramic piece, a common electrode arranged on one surface of the piezoelectric ceramic piece, and a plurality of electrodes arranged on the other surface of the piezoelectric ceramic piece. The piezoelectric ceramic piece contains lead in a content of less than 1,000 ppm. The plurality of electrodes include two drive phase electrodes, at least one non-drive phase electrode, and at least one detection phase electrode.

公开(公告)号：US20190140558A1

公开(公告)日：2019-05-09

申请号：US16174898

申请日：2018-10-30

Applicant: CANON KABUSHIKI KAISHA

Inventor： Tatsuo Furuta ,  Akira Uebayashi ,  Tomohiro Watanabe ,  Shinya Koyama

IPC: H02N2/00 ,  H02N2/16 ,  H01L41/187 ,  H01L41/113 ,  H01L41/047

Abstract: A vibration wave motor includes a driven body, a vibrator including an annular vibration plate and an annular piezoelectric element, and a vibration damping member, which are arranged in sequence, wherein the vibration plate has, on a side facing the driven body, radially extending groove portions at X places, and, when center depths of the groove portions at X places are sequentially denoted by D1 to DX in a circumferential direction, D1 to DX vary along a curve obtained by superposing one or more sine waves, and wherein the vibration plate is locally supported by the vibration damping member in some or all antinode portions of a standing wave occurring when the vibration wave motor is driven.

公开(公告)号：US09871471B2

公开(公告)日：2018-01-16

申请号：US14678837

申请日：2015-04-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Akira Uebayashi ,  Toshihiro Ifuku ,  Tatsuo Furuta ,  Shinya Koyama

IPC: H01L41/09 ,  H01L41/113 ,  H01L41/107 ,  H02N2/14 ,  H02N2/16 ,  G02B7/04 ,  H01L41/187

CPC classification number: H02N2/142 ,  G02B7/04 ,  H01L41/1871 ,  H02N2/163

Abstract: An oscillatory wave drive device has an oscillatory wave driving unit having an electromechanical energy conversion element having drive phases and a detection phase, a diaphragm, and a rotor, in which a traveling wave is generated on the surface of the diaphragm of the electromechanical energy conversion element to drive the rotor, and the driving speed of the rotor is controlled based on a signal of the phase difference detecting unit. In the oscillatory wave drive device, a detection phase voltage step-down unit and a drive phase voltage step-down unit each containing a resistance voltage dividing circuit having at least two resistors are provided and the voltage dividing ratio in the resistance voltage dividing circuit of the detection phase voltage step-down unit is lower than 1/1 and higher than 1/20.