Physical quantity measuring device
专利汇可以提供Physical quantity measuring device专利检索，专利查询，专利分析的服务。并且PURPOSE:To obtain a displacement sensor which is small-sized and is capable of responding swiftly, by constituting so that a phase difference between a laser signal generated from the same light source, and a reference light beam is varied from zero to 180 deg., corresponding to the displacement from zero to a maximum value of a diaphragm. CONSTITUTION:A luminous flux emitted from a laser light source 1 is separated into two luminous fluxes, which are projected to two reflectors of a diaphragm through a projection fiber 5 and an optical fiber tip part 11. The reflected rays are synthesized by a condenser 4 through a photodetecting fiber 5, and are projected to a photoelectric transducer 2. when the diaphragm 6 is in a maximum extent of deflection, the position of two reflectors is adjusted so that a difference between the light passage length 7 and 8 becomes 180 deg., and also a space l2 between a tip part 12 of the photodetecting element 5, and the condenser 4 is controlled so that an output of the element 2 becomes minimum when pressure 9 is not put on the diaphragm 6. In this way, a displacement sensor which is small-sized and is capable of responding swiftly is obtained.，下面是Physical quantity measuring device专利的具体信息内容。
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