Abstract:
Thermal detectors 1 comprise at least one pair of membrane electrodes (3A, 3B) formed on a base material (2) such as a pyroelectric, semiconductive or insulating material, at least one member of said pair of electrodes being coated with a black membrane (4) of precious metal formed by an electyrolytic process. The detectors are highly sensitive because ot their excellent heat absorption efficiency and suffer little change in sensitivity over a wide wavelength range.
Abstract:
In a liquid crystal thick cell light modulator using ferroelectric liquid crystal, a series of voltage pulses with an asymmetrical duty ratio (that is, duty ratio of 55-85%) is applied between a pair of electrode plates containing the ferroelectric liquid crystal. In another liquid crystal thick cell light modulator using ferroelectric liquid crystal, a DC bias voltage is added to the voltage pulses, where the magnitude of the DC bias voltage is 20-50% of the half amplitude of the voltage pulses. In still another liquid crystal thick cell light modulator, the gap length between the electrode plates is larger than 50 mu m, and the helical pitch in smectic C phase of the ferroelectric liquid crystal is 0.7 to 0.95 times the gap length.
Abstract:
Thermal detectors 1 comprise at least one pair of membrane electrodes (3A, 3B) formed on a base material (2) such as a pyroelectric, semiconductive or insulating material, at least one member of said pair of electrodes being coated with a black membrane (4) of precious metal formed by an electyrolytic process. The detectors are highly sensitive because ot their excellent heat absorption efficiency and suffer little change in sensitivity over a wide wavelength range.
Abstract:
In a liquid crystal thick cell light modulator using ferroelectric liquid crystal, a series of voltage pulses with an asymmetrical duty ratio (that is, duty ratio of 55-85%) is applied between a pair of electrode plates containing the ferroelectric liquid crystal. In another liquid crystal thick cell light modulator using ferroelectric liquid crystal, a DC bias voltage is added to the voltage pulses, where the magnitude of the DC bias voltage is 20-50% of the half amplitude of the voltage pulses. In still another liquid crystal thick cell light modulator, the gap length between the electrode plates is larger than 50 mu m, and the helical pitch in smectic C phase of the ferroelectric liquid crystal is 0.7 to 0.95 times the gap length.
Abstract:
In a liquid crystal thick cell light modulator using ferroelectric liquid crystal, a series of voltage pulses with an asymmetrical duty ratio (that is, duty ratio of 55-85%) is applied between a pair of electrode plates containing the ferroelectric liquid crystal. In another liquid crystal thick cell light modulator using ferroelectric liquid crystal, a DC bias voltage is added to the voltage pulses, where the magnitude of the DC bias voltage is 20-50% of the half amplitude of the voltage pulses. In still another liquid crystal thick cell light modulator, the gap length between the electrode plates is larger than 50 mu m, and the helical pitch in smectic C phase of the ferroelectric liquid crystal is 0.7 to 0.95 times the gap length.
Abstract:
PROBLEM TO BE SOLVED: To simplify troublesome sensory evaluation on smell while providing an objective evaluation value on the degree of a smell. SOLUTION: In a gas preparation part 1, the proportion of a measuring-object smell gas mixed into a selected central smell gas is gradually increased by a preparation part 12. A person 100 in charge of evaluation takes a smell at the prepared gas by using a sniffing port 15 and operates a discrimination point indication part 17 when recognizing a change in the smell. Through this operation, a smell mixing ratio corresponding to a discrimination point is stored in a preparation control part 13 while a gas of a mixing ratio is prepared by a preparation part 12, the mixing ratio conforming to a scale axis with the smell mixing ratio used as a base unit. In a measurement part 2, detection data corresponding to the prepared gas are collected by a data processing part 28 to prepare a calibration curve showing a relation between evaluation values on a discrimination point base unit scale axis and the detection data, the calibration curve being stored in a storage part 29. By referring to the calibration curve, an evaluation value can be found from a measurement result of an unknown sample with a discrimination point used as a base unit. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a portable means for reproducing a smell of great value such as an intensive smell of good sensitivity or the like at an arbitrary time in an arbitrary place and to improve conventional calibration work necessary for preparing many reference gases or reference samples in the vicinity of a smell discrimination device. SOLUTION: A collector 11 is arranged on a bed 12 and held between glass wool layers 13 and 14. A door 15 made of a shape memory alloy, which is developed in a vertical direction at the normal temperature and deformed into a circular arc shape by heating, is joined to one end of the bed 12. The undersurface of the bed 12 is insulated by an insulating material and placed on the upper surface of a substrate 16 which is printed with a heater and has a power introducing connector 17 provided to its edge. The substrate 16 is placed on a heat insulator 18. These elements are housed in an internal cover 19 and a portable envelope 20. The front and rear parts of the envelope 20 are opened in order to allow a smell to flow and the preliminarily adsorbed smell is produced by the heater. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a device for preventing drunk operation, capable of preventing an accident caused by drinking by effectively preventing impersonation. SOLUTION: The device for preventing drunk operation includes: a drunkenness degree measuring part 12 for obtaining biological information of a subject as authenticated information; a drunkenness degree measuring part 12 operatively connected with the operation of the biological information acquisition part to measure the information on the drunkenness of the subject; an information storage part 2 for storing previously registered biological information and a reference value of the degree of drunkenness to permit a specific operator to operate a target for operation; an authentication part 3 for authenticating the subject as the specific operator of the target for operation; an operation determination part 4 for comparing the reference value of the degree of drunkenness with the information on the drunkenness measured by the drunkenness degree measuring part 12 as operatively connected with acquisition of the authenticated information, and determining whether the operation of the target for operation by the specific operator should be permitted or not; and a control part 5 for controlling the start of operation of the target for operation based on signals from the authentication part 3 and the operation determination part 4. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To accurately evaluate a change in the quality of a target smell by setting off the effect of the change of a smell sensor with the elapse of time even if the preservation of a comparing target product is difficult. SOLUTION: A smell evaluation device includes a smell synthesizing part 6 for preparing a synthetic smell by mixing a plurality of kinds of raw gases in an appropriate ratio and, if a measuring result is obtained by measuring the initial state of a target smell by the smell sensor 4, synthetic data such as the mixing ratio of the raw gases or the like is calculated on the basis of the measuring result by a smell synthesizing control part 63 and a preparation part 62 is controlled to prepare the synthetic smell similar to the target smell from the raw gases. The synthetic smell is measured by the smell sensor 4 to be compared with the measuring result of the target smell to correct the synthetic data if necessary. If the difference due to the comparison result is sufficiently eliminated, the synthetic data is stored in a memory part 64 and, when the target smell changed in quality with the elapse of time is next measured, even the synthetic smell reproduced on the basis of the synthetic data is measured at the same time to evaluate a change in smell quality on the basis of the difference between both of them. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To acquire and display intelligibly a delicate change of the smell quality caused by deterioration or denaturation of the quality resulting from an environmental change or lapse of time of food and drink. SOLUTION: A reference smell is formed by mixing the n-kinds of addition smells having each different smell quality to an object smell, and each reference smell wherein the concentration of the addition smell is different in a plurality of stages is prepared in a reference smell preparation part 2. Each reference smell is introduced into a sensor cell 4, and each detection signal is acquired by smell sensors 5 to the number of m, and evaluation reference axes to the number of n corresponding to each reference smell are generated in an m-dimensional space formed from the detection output. Then, an evaluation object smell having a possibility that the quality of the object smell may be changed is measured similarly by the smell sensors 5 to the number of m, and its measured point is positioned in the m-dimensional space, and the degree of nearness of the measured point to the evaluation reference axes to the number of n is determined, and information showing a change of the smell quantity is generated based thereon. COPYRIGHT: (C)2007,JPO&INPIT