Abstract: A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. This brings a projection 36 provided on the vibrating plate 10 into abutment with an outer peripheral surface of the rotor 100. In this construction, when the vibrating plate 10 vibrates in the horizontal direction in the figure by an applied voltage from a driving circuit (not shown), the rotor 100 is rotated in a clockwise direction in accordance with the displacement of the projection 36 due to the vibration.

Abstract: An ultrasonic motor of the present invention has a vibrating element 6. The vibrating element 6 includes a first piezoelectric element 62 that undergoes extension and contraction by application of an AC voltage, a reinforcing plate 63 having a contact portion 66 and an arm portion 68, and a second piezoelectric element 64 that undergoes extension and contraction by application of an AC voltage. The first piezoelectric element 62, the reinforcing plate 63, and the second piezoelectric element 64 are laminated in this order. The vibrating element 6 is fixedly mounted through the arm portion 68 so that the contact portion 66 abuts on a driven element (rotor 51). Further, the vibrating element 6 has a body portion and a length L of the body portion in a direction in which the vibrating element 6 extends and contracts by application of the AC voltage is 1 to 20 mm.

Abstract: A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. This brings a projection 36 provided on the vibrating plate 10 into abutment with an outer peripheral surface of the rotor 100. In this construction, when the vibrating plate 10 vibrates in the horizontal direction in the figure by an applied voltage from a driving circuit (not shown), the rotor 100 is rotated in a clockwise direction in accordance with the displacement of the projection 36 due to the vibration.

Abstract: An optical gyroscope (100) has a detection light guide body (100S) and a light measuring board (140). The detection light guide body (100S) is formed by stacking light guide layers (110, 120) and protective layers (130) alternately. An eddy-shaped light guide path section is provided in each of the light guide layers (110, 120), and the light guide path sections are optically connected to each other through said protective layers (130) to form an integral light guide path (100L). One end (100La) of the light guide path (100L) is directly connected to the light measuring board (140), and another end (100Lb) of the same is connected to the light measuring board (140) through an optical fiber (143).

Abstract: A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. This brings a projection 36 provided on the vibrating plate 10 into abutment with an outer peripheral surface of the rotor 100. In this construction, when the vibrating plate 10 vibrates in the horizontal direction in the figure by an applied voltage from a driving circuit (not shown), the rotor 100 is rotated in a clockwise direction in accordance with the displacement of the projection 36 due to the vibration.

Abstract: An ultrasonic motor of the present invention has a vibrating element 6. The vibrating element 6 includes a first piezoelectric element 62 that undergoes extension and contraction by application of an AC voltage, a reinforcing plate 63 having a contact portion 66 and an arm portion 68, and a second piezoelectric element 64 that undergoes extension and contraction by application of an AC voltage. The first piezoelectric element 62, the reinforcing plate 63, and the second piezoelectric element 64 are laminated in this order. The vibrating element 6 is fixedly mounted through the arm portion 68 so that the contact portion 66 abuts on a driven element (rotor 51). Further, the vibrating element 6 has a body portion and a length L of the body portion in a direction in which the vibrating element 6 extends and contracts by application of the AC voltage is 1 to 20 mm.

Abstract: A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. This brings a projection 36 provided on the vibrating plate 10 into abutment with an outer peripheral surface of the rotor 100. In this construction, when the vibrating plate 10 vibrates in the horizontal direction in the figure by an applied voltage from a driving circuit (not shown), the rotor 100 is rotated in a clockwise direction in accordance with the displacement of the projection 36 due to the vibration.

Abstract: A diaphragm 10 is fixed to a base plate 102 by a screw 13. A lever 20 has a spring member 23, a rotor-fixing member 25, and an insertion hole 22 formed therein. By passing a shaft 21 through the insertion hole 22, the lever 20 is turnably supported so as to turn about its own axis. In a state in which the spring member 23 abuts against an eccentric pressure-adjusting cam 26, a pressing force for urging the diaphragm 10 via the rotor 100 is adjusted by turning the pressure-adjusting cam 26 so as to change an elastic force of the spring member 23.

Abstract: An optical gyroscope (100) has a detection light guide body (100S) and a light measuring board (140). The detection light guide body (100S) is formed by stacking light guide layers (110, 120) and protective layers (130) alternately. An eddy-shaped light guide path section is provided in each of the light guide layers (110, 120), and the light guide path sections are optically connected to each other through said protective layers (130) to form an integral light guide path (100L) One end (100La) of the light guide path (100L) is directly connected to the light measuring board (140), and another end (100Lb) of the same is connected to the light measuring board (140) through an optical fiber (143).

Abstract: A power generator using a piezoelectric element is provided which generates electric power at a high efficiency. It has been determined that the efficiency of power generation varies as a function of the ratio of an initial unloaded value of the power generator to a prescribed voltage of the input of an electric power system. A high power generation efficiency can be obtained when the voltage ratio is in the range of approximately two to twenty. In particular, when the voltage ratio is in the range of approximately four to six, a maximum power generation efficiency can be obtained. The invention provides a small-sized, high performance power generator which can be used in practice in portable electronic devices or the like.

Abstract: A power generator is provided and includes a piezoelectric transducer which generates electric power upon application of a strain. The power generator includes a vibrating arm having a sandwich structure wherein a support layer is held between at least two piezoelectric portions. The vibrating arm is wider on the support end than at a free end. The piezoelectric portions are extended to a root portion of the vibrating arm so that strain energy may efficiently be converted into electric energy. The piezoelectric portions each have a laminated structure so that piezoelectric power generator having the electromotive voltage and the capacitance optimum for charging may be realized.