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JP60200121 |
PURPOSE: To eliminate an error in measurement caused by fluctuations of the quantity of emitted light, by computing the ratio between the quatity of light emitted from a light-emitting element and the quantity of light received by a ligh...
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JP60192203 |
PURPOSE: To accurately measure the pressure of a body to be measured, by providing a reflecting member and separating an optical path into the 1st optical path which condenses lights to a microlens through an optical measuring element an...
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JP60190885 |
PURPOSE: To enable indirect measurement by dispensing with a gas pressure gauge, by performing the measurement of gas pressure from projection data obtained from an X-ray absorbing substance. CONSTITUTION: An object to be examined is irr...
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JP60183533 |
PURPOSE: To support a photodetecting element substrste as an upper layer and to prevent it from flexing by constituting the multilayer structure of the photodetecting element substrate and a substrate on which plural light emitting eleme...
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JP60177216 |
PURPOSE: To detect fine displacement under non-contacting state by generating constant photoelectromotive force at the photodetecting element of a photocoupler provided near a photointerrupter which converts two photodetection signals in...
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JP60165528 |
PURPOSE: To increase the S/N of a sensor by hollowing the core of the optical fiber of a pressure detection part, coating the hollow-core surface with a light reflecting film, and connecting this with a nonhollow optical fiber as a trans...
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JP60162929 |
PURPOSE: To measure securely the pressure at a fine part in a blood vessel by using an optical fiber as a sensor. CONSTITUTION: Only the clad 3 of the tip part of the optical fiber 1 used as the sensor is cut away as closely to the core ...
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JP60135736 |
PURPOSE: To detect even an increase and a decrease in pressure by multiplexing light waves through single-mode optical fibers which vary and does not vary in length with pressure, and converting obtained interference fringes into a pulse...
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JP60135737 |
PURPOSE: To detect an increase and a decrease in pressure variation by demultiplexing light and then multiplexing light waves passed through single-mode optical fibers which vary and do not vary in length with pressure, and photodetectin...
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JP60133336 |
PURPOSE: To make it possible to perform accurate pressure measurement, by noting the face that an optical fiber is elongated in proportion to pressure, utilizing the fact that interference fringes are generated by the difference in light...
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JP60122344 |
PURPOSE: To inspect the internal pressure in a sealed container accurately with simple constitution by detecting the degree of displacement due to the internal pressure in the container by using an electrostatic capacity type displacemen...
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JP60111129 |
PURPOSE: To obtain a pressure sensor having high sensitivity by providing a fixed plate having a slit hole, a movable plate which is placed so as to be opposed to said plate and to which a pressure to be measured is applied, and a suppor...
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JP60098327 |
PURPOSE: To quicken response speed and to measure precisely a vacuum degree by detecting an acoustic impedance of a gas seen from a mechanical vibration part varying with the vacuum degree. CONSTITUTION: AC signal generated from an oscil...
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JP60098326 |
PURPOSE: To examine easily an intra-can pressure with a simple constitution by detecting the difference between the fastened edge of a can and the center of a cover to the can. CONSTITUTION: A displacement meter is arranged on a passage ...
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JP60085344 |
PURPOSE: To make the device small and highly accurate, by forming a strain detecting elements at the thin part of a substrate, whose elastic limit is high, imparting ultrasonic wave vibration in variable frequency to the thin part, detec...
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JP60076634 |
PURPOSE: To improve the density and accuracy of the distribution of pressure, which is applied in a planar state, by concentrically dividing one light receiving element corresponding to one light emitting element into two parts with a li...
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JP60076633 |
PURPOSE: To prevent input of light from the back surface of a sensor and to improve the measuring accuracy of the pressure sensor utilizing light and the freedom of its structure, by forming a light receiving element and a light shieldin...
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JP60070328 |
PURPOSE: To improve accuracy, by bonding the sealed end of a diaphragm to the upper surface of a photoelastic element, and bonding the other open end of the diaphragm to a case, which is sealed in an airtight manner. CONSTITUTION: The bo...
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JP60066114 |
PURPOSE: To reduce a man-hour for adjustment, and to realize a stable force measurement with a high sensitivity by forming an optical transmission line so that a movable part of a pressure receiving body and an immovable part are sewn. C...
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JP60064226 |
PURPOSE: To judge the small pressure difference definitely, by measuring the pressure difference based on a current value when a force, which is received by a pressure receiving plate is balanced with magnetic attraction yielded in fixed...
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JP60035234 |
PURPOSE: To use photoluminescence light for transmission of data intactly, by projecting light on a crystal plate, detecting the change in light emitting state of the yielded photoluminescence light, and computing pressure based on the d...
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JP60035235 |
PURPOSE: To utilize the light of a light emitting element for the transmission of pressure data intactly, by detecting the pressure change based on the change in light emitting state of a semiconductor light emitting element in which a l...
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JP60025420 |
PURPOSE: To make accurate corrections by using a resistance which varies in resistance value with temperature as a circuit element which decides on the amplification degree of an amplifier. CONSTITUTION: The resistance 14 which varies in...
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JP60007406 |
PURPOSE: To improve the performance of a phase difference sensor by providing two cores for light wave transmission which meet single-mode requirements and has a polarization-plane maintaining function in the cross section so that the pl...
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JP59217127 |
PURPOSE: To make small a pressure sensor and thereby to facilitate the handling thereof by a construction wherein an ultrasonic oscillator and an ultrasonic wave receiver are disposed at a relatively small distance from each other inside...
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JP59187236 |
PURPOSE: To generate an alarm by a buzzer and to acutomatically open a switch apparatus when vacuum deterioration is generated, by attaching a vacuum sensor to a vacuum switch tube while always monitoring the vacuum degree of the vacuum ...
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JP59166830 |
PURPOSE: To execute a measurement of pressure with high accuracy, and also to manufacture easily a titled sensor by constituting simply consisting of an optical waveguide structure formed on a substrate, a means for pressing a part of it...
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JP59163532 |
PURPOSE: To inspect exactly the propriety of an internal pressure and whether the internal pressure is suitable or not, irrespective of a quality of material and a structure of a tightly sealed-up vessel, by measuring a deformation quant...
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JP59160731 |
PURPOSE: To improve safety by using opto-elastic elements, a polarizing device and photodetectors to measure pressure and using optical fibers to transmit the result of measurement to the point under safe environment for signal processin...
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JP59157537 |
PURPOSE: To detect accurately the pressure in a can and to automate the inspection of the internal pressure by allowing cans to pass through in the same facing between two couples of rolls which are arranged at different intervals, and m...
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JP59154333 |
PURPOSE: To attain an optical fiber type pressure sensor which can have the diameter narrowed and is easy to produce by combining an optical elastic element and a polarization plane maintaining optical fiber. CONSTITUTION: The light from...
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JP59153139 |
PURPOSE: To measure pressure as surface data and to perform determination control optimally, by providing light emitting elements and light receiving elements, and detecting the change in the amount of received light based on the change ...
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JP59108929 |
PURPOSE: To detect a pressure, by monitoring a double refraction pattern, which is dependent on the pressure of a polarizing plate. CONSTITUTION: The light, which is emitted from a light emitting element 1, is transmitted through a polar...
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JP59098190 |
PURPOSE: To determine the pressure applied by the titled briquette coal, by charging specific briquette coal in a retort in a suspended manner making a clearance between the bottom of the retort, placing a pressure-receiving plate to the...
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JP59088617 |
PURPOSE: To achieve an automatic compensation for zero-point shift by arranging a third action means fixed on a floating fulcrum connected to first and second action means so as to vary the direction of action and a spring means of adjus...
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JP59079134 |
PURPOSE: To facilitate measuring the variation of pressure of a plane plate or the like, by measuring only the variation of sound pressure with a microphone arranged on the outside of a hollow water tank and obtaining the variation of wa...
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JP59061735 |
PURPOSE: To enhance pressure measuring accuracy, by a method wherein an optical waveguide as a dummy optical waveguide is formed on the same substrate as an optical waveguide for measuring sound pressure and a dummy diaphragm having a sa...
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JP59060219 |
PURPOSE: To provide a broad measuring range, by using a floating supporting point having a circular side surface, fixing one end of a span setting beam to the circular side surface, and winding the span setting beam to the circular side ...
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JP59060334 |
PURPOSE: To measure a process value accurately without any flicker of light by specifying the value obtained by dividing the cubic value of the gravitational size of the space part of a diaphragm which is displaced when receiving pressur...
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JP59060333 |
PURPOSE: To obtain a simple, small-sized pressure detector which has various response characteristics by varying the quantity of transmitted light by the displacement of a slit provided to a pressure pedestal, and displaying pressure on ...
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JP59057169 |
PURPOSE: To enable a remote sensing while heightening the sensitivity removing the effect of disturbances by providing an optical fiber rotation type polarization mode connector between an optical fiber sensor section and an optical fibe...
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JP59052725 |
PURPOSE: To obtain a small-sized differential pressure indicator with good characteristics by constituting and balancing a pneumatic servomechanism which inputs the force of an object of measurement, and eliminating the abrasion influenc...
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JP59039738 |
PURPOSE: To obtain easily an optical fiber retaining the plane of polarization for a pressure sensor by inserting a base material for said optical fiber together with base materials for connecting members having the same quality as the q...
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JP59038625 |
PURPOSE: To eliminate an error in measurement and to increase the precision, by using an optical fiber maintaining the plane of polarization, by using a polarized beam splitter for dividing light waves and a polarized beam splitter for s...
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JP59027232 |
PURPOSE: To make it possible to simply measure the change of pressure by using one optical fiber. CONSTITUTION: Light emitted from a light source 1 is passed through a polarizer to be converted to linear polarized light and a λ/2 plate ...
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JP59019829 |
PURPOSE: To measure pressure with high accuracy, by providing a substrate having an input/output single mode optical waveguide and a pair of pressure detecting single mode optical waveguides coupled to one end of said waveguide, a means ...
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JP59018428 |
PURPOSE: To improve judging accuracy for a defective container, by forming the image on a wall surface of a hermetically sealed container on a photoelectric transducer screen of an image pickup device as a secondary image, and checking t...
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JP59015832 |
PURPOSE: To achieve a highly reliable inspection of internal pressure of an internal pressure sealed container by measuring reaction force to a displacement caused when an elastically displaceable wall surface of a sealed container havin...
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JP59013934 |
PURPOSE: To force a fluid out from a bellows for measurement and to reset quickly the pointer to a zero point when the bellows for measuring fluid pressure deforms by generating a negative pressure in another bellows and utilizing the sa...
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JP59003237 |
PURPOSE: To obtain a stable detection value by passing a can through a demagnetizer prior to inspection with an expanded can detector. CONSTITUTION: A demagnetizer 9 is arranged before a probe an expanded can probe 7. As passing through ...
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