Abstract: An ultrasonic touch panel is offered which can detect whether there is a touch, at an improved accuracy without the need to adjust the detection sensitivities of individual piezoelectric bodies separately. The piezoelectric bodies have comb-like electrodes that excite ultrasonic waves. A sealant is applied to those of the side surfaces of the piezoelectric bodies which intersect with the direction of propagation of the excited ultrasonic waves. This suppresses reflection of the ultrasonic waves, thus attenuating ultrasonic waves propagating to the intersecting side surfaces. Generation of parasitic waves which would normally be caused by reflection of ultrasonic waves is prevented.

Abstract: To provide an ultrasonic diagnosis device which can be simply manufactured and can detect an ultrasonic wave with excellent sensitivity and accuracy. An ultrasonic diagnosis device in which a transmitting piezoelectric element and a receiving piezoelectric element are supported on a substrate supported parallel to a radial artery by support means such that their widths a, c are respectively 0.38-1.1 mm and a gap b between them is 0.05-4.0 mm, an ultrasonic wave is transmitted from the transmitting piezoelectric element, a reflected wave from the radial artery is received by the receiving piezoelectric element, and a pulse wave is detected on the basis of a detection result of the reflected wave.

Abstract: To provide a noninvasive type blood rheology measuring apparatus capable of simply and conveniently measuring blood rheology information without sampling blood from a subject in measuring the blood rheology and a small-sized and portable apparatus, a blood rheology measuring apparatus of the invention is on a basis of a constitution including means for noninvasively detecting a flow velocity of the blood flowing in the blood vessel as a Doppler shift signal by transmitting and receiving a wave from the face of the skin and means for analyzing blood rheology by a temporal change of the flow velocity value of the blood detected by the means.

Abstract: A piezoelectric device having improved characteristics is accomplished by restricting degradation and variance of vibration characteristics resulting from an adhesive, and a production process is simplified. The piezoelectric device has a construction in which a ultra-fine particle layer made of substantially the same main component and having the same crystal structure as those of a piezoelectric layer is formed on a substrate, and the piezoelectric layer is formed on the ultra-fine particle layer.

Abstract: To provide an ultrasonic diagnosis device which can be simply manufactured and can detect an ultrasonic wave with excellent sensitivity and accuracy. An ultrasonic diagnosis device in which a transmitting piezoelectric element and a receiving piezoelectric element are supported on a substrate supported parallel to a radial artery by support means such that their widths a, c are respectively 0.38-1.1 mm and a gap b between them is 0.05-4.0 mm, an ultrasonic wave is transmitted from the transmitting piezoelectric element, a reflected wave from the radial artery is received by the receiving piezoelectric element, and a pulse wave is detected on the basis of a detection result of the reflected wave.

Abstract: An ultrasonic sensor for providing improved sensitivity by improving the adhesion to the skin without sealing an oily liquid (jelly) or without interposing it between the skin and the ultrasonic sensor is provided. Also, an ultrasonic diagnostic device using this sensor is offered. The ultrasonic sensor detects biological information using piezoelectric elements. The piezoelectric elements of this sensor are sucked onto the skin of the living body via an intimate contact layer. This makes it unnecessary to seal silicone oil or the like. Also, use of any special material is not necessary. An ultrasonic wave can be efficiently sent into the living body and received from inside it without applying an oily liquid between the ultrasonic sensor and the skin. By fabricating the intimate contact layer from a material whose Young's modulus is 1.0×105 to 3.0×107 dyne/cm2, an ultrasonic wave can be more effectively sent into and received from inside the living body.

Abstract: An ultrasonograph capable of diagnosing a region of interest at high sensitivity is offered. The ultrasonograph comprises a sensor portion having a sending piezoelectric element for sending ultrasound toward the radial artery and a receiving piezoelectric element for receiving the ultrasound reflected from the radial artery, a belt for holding the sensor portion from its back side relative to the radial artery, and a processing portion for gaining the pulse wave and the pulse rate in the radial artery based on the reflected waves received by the receiving piezoelectric element and displaying them. The belt is provided with a recessed portion that is located opposite to the sensor portion and recessed relative to the sensor portion. The space between the sensor portion and the recessed portion functions as an ultrasound-attenuating portion.

Abstract: In a pulse wave detecting device for detecting a pulse wave by use of an ultrasonic wave, in order to prevent attenuation of the ultrasonic wave caused by a gap formed between the pulse wave detecting device and the user's skin, a transmitter for generating an ultrasonic wave and a receiver are formed on a support substrate so as to protrude therefrom. Consequently, the transmitter and receiver contact a surface of the skin and no gap is formed between the surface of the skin and the pulse wave detecting device. A pulse wave detecting device high in detection accuracy is thus realized without the need for applying a gel between the skin and a detecting surface of the device.

Abstract: There is provided a near-field optical memory head for recording and/or reproducing information on a recording medium by utilizing near-field light which is a near-field optical memory head having a compact constitution and is suitable for mass production and array formation. According to the near-field optical memory head 11, in a planar substrate formed by penetrating at least one hole in a shape of an inverted pyramid such that a top portion thereof constitutes a very small aperture 4, a near-field light forming system for forming near-field light at a recording medium 1 and a near-field light detecting system for guiding propagating light 10 provided by interactively operating the formed near-field light with the very small aperture 4 to a light detecting element are integrated.

Abstract: There is provided a pulse detecting device which resists fluctuations in the quality by locating an ultrasound transmitting piezoelectric element and an ultrasound receiving piezoelectric element with high precision. In the pulse detecting device, a detection sensitivity of the pulse is improved. A transmitting piezoelectric element and a receiving piezoelectric element are fixed onto a substrate by electrodes. The transmitting piezoelectric element is excited in response to an inputted drive voltage signal to generate an ultrasound and transmits the generated ultrasound to a living body. The receiving piezoelectric element receives an echo produced by reflecting the ultrasound transmitted into the living body by a blood flow of the living body and converts it into a voltage signal. A processing arithmetic unit compares the frequency of the ultrasound generated by the transmitting piezoelectric element with that of the echo received in the receiving piezoelectric element to thereby detect a pulse.

Abstract: A pulse wave monitor having a structure capable of automatically performing optimal positioning of a pulse wave probe with respect to a user's body. A plurality of transmitting piezoelectric vibrators for transmitting an ultrasonic wave to an artery are provided along with a plurality of receiving piezoelectric vibrators for receiving an ultrasonic wave from the artery. An optimal combination of a transmitting piezoelectric vibrator and a receiving piezoelectric vibrator for use in pulse wave measurement is determined based on the intensity of a received ultrasonic wave signal. Ultrasonic wave transmission and reception are made by the optimal combination so that accurate pulse wave detection measurement is made possible by automatic positioning of the pulse wave probe.

Abstract: The present invention has an object to obtain an optical waveguide probe which is formed in a hook form to illuminate and detect light by a manufacture using a silicon process. This optical waveguide probe is formed in a hook form and structured by an optical waveguide 1 sharpened at a probe needle portion 5 and formed of dielectric and a substrate 2 supporting this optical waveguide 1. This optical waveguide 1 is formed overlying the substrate 2. The optical waveguide 1 is structured by a core 8 to transmit light and a cladding 9 smaller in refractive index than the core 8.

Abstract: There are provided a pulse detection device in which an ultrasound transmitting piezoelectric element and an ultrasound receiving piezoelectric element are precisely placed to limit variation in quality, and a method of manufacturing the pulse detection device. Further, the pulse detection sensitivity is improved in the pulse detection device. In the pulse detection device of the present invention, a transmitting piezoelectric element excited in accordance with a drive signal to generate ultrasound and to transmit the ultrasound into a living body, and a receiving piezoelectric element for receiving reflected waves of the ultrasound transmitted into the living body and reflected by a bloodstream in the living body are placed on a surface of a transmitting/receiving base plate. A processing computation section compares the frequency of the ultrasound generated by the transmitting piezoelectric element and the frequency of the reflected waves received by the receiving piezoelectric element to detect a pulse.

Abstract: A semiconductor acceleration sensor comprises a cantilever structure formed from a semiconductor wafer and having a first surface for receiving an acceleration force, a second surface disposed generally orthogonal to the first surface, and strain sensing portions disposed on the second surface. A supporting body supports the cantilever structure. A plurality of bridge circuits are disposed on the second surface of the rectangular parallelepiped shaped structure. Each of the bridge circuits has a plurality of the strain sensing portions.

Abstract: A method of manufacturing a semiconductor acceleration sensor comprises forming a strain sensing section on a surface of a semiconductor wafer, fixing the semiconductor wafer to a cooled fixing stage, cutting out a structural body having the strain sensing section from the semiconductor wafer, and connecting a support member to the structural body cut from the semiconductor wafer.

Abstract: A semiconductor acceleration sensor comprises a base having a first surface for receiving an acceleration force and a second surface disposed generally perpendicular to the first surface. A first detector is disposed on the second surface of the base for detecting an acceleration force in a horizontal direction of the base. A second detector is disposed on the second surface of the base for detecting an acceleration force in a vertical direction of the base. A support member is connected to one end of the base for supporting and fixing the base.

Abstract: A semiconductor acceleration sensor comprises a sensor element having a first surface for receiving an acceleration force and second opposite surfaces disposed generally perpendicular to the first surface, a support for supporting and fixing the sensor element, and a detecting device disposed on the second opposite surfaces of the sensor element for detecting a variation of a physical quantity due to an acceleration force applied to the first surface of the sensor element.

Abstract: A semiconductor device comprises a semiconductor acceleration sensor having a cantilever made of a semiconductor material, a supporter for supporting the cantilever, and diffused resistors disposed on the cantilever. An acceleration detecting device detects a displacement of the cantilever based on acceleration forces applied to the cantilever and on changes of resistance values of the diffused resistors.

Abstract: A semiconductor device comprises a semiconductor acceleration sensor having a cuboid-shaped cantilever cut from a semiconductor wafer, a detecting device disposed on the cantilever for detecting a displacement of the cantilever due to an acceleration force applied to the cantilever, and a supporter for supporting and fixing the cantilever at one end thereof.

Abstract: A power unit comprises an input mechanism for inputting kinetic energy as a rotary motion, a storing mechanism connected to the input mechanism for storing the kinetic energy as rotary motion, a first speed-regulating mechanism connected to the storing mechanism for increasing the speed of the rotary motion released from the storing mechanism, and a second speed-regulating mechanism connected to the first speed-regulating mechanism for braking the rotary motion to regulate the speed of the rotary motion. A converting mechanism is connected to the first speed-regulating mechanism for converting the rotary motion whose speed has been increased into electricity. A control circuit is connected to the converting mechanism for controlling the generated electricity, and a positive electrode output terminal and a ground electrode terminal are connected to the control circuit.