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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Piezoelectric element oscillatory wave motor and optical apparatus
A piezoelectric element that can decrease the output voltage for detection relative to the input voltage for driving without requiring a step-down circuit between a detection phase electrode and a phase comparator and an oscillatory wave motor including the piezoelectric element are provided. A piezoelectric element includes a piezoelectric material having a first surface and a second surface, a common electrode disposed on the first surface, and a drive phase electrode and a detection phase electrode disposed on the second surface. An absolute value d(1) of a piezoelectric constant of the piezoelectric material in a portion (1) sandwiched between the drive phase electrode and the common electrode and an absolute value d(2) of a piezoelectric constant of the piezoelectric material in a portion (2) sandwiched between the detection phase electrode and the common electrode satisfy d(2)
Piezoelectric element oscillatory wave motor and optical apparatus
A piezoelectric element that can decrease the output voltage for detection relative to the input voltage for driving without requiring a step-down circuit between a detection phase electrode and a phase comparator and an oscillatory wave motor including the piezoelectric element are provided. A piezoelectric element includes a piezoelectric material having a first surface and a second surface, a common electrode disposed on the first surface, and a drive phase electrode and a detection phase electrode disposed on the second surface. An absolute value d(1) of a piezoelectric constant of the piezoelectric material in a portion (1) sandwiched between the drive phase electrode and the common electrode and an absolute value d(2) of a piezoelectric constant of the piezoelectric material in a portion (2) sandwiched between the detection phase electrode and the common electrode satisfy d(2)
Piezoelectric element oscillatory wave motor and optical apparatus
FURUTA TATSUO (Autor:in) / SAITO HIROSHI (Autor:in) / KUBOTA MAKOTO (Autor:in) / AKASHI KENICHI (Autor:in)
17.03.2020
Patent
Elektronische Ressource
Englisch
IPC:
H10N
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
C04B
Kalk
,
LIME
/
G02B
Optische Elemente, Systeme oder Geräte
,
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
/
H02N
Elektrische Maschinen, soweit nicht anderweitig vorgesehen
,
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
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