Laser speckle speedometer
专利汇可以提供Laser speckle speedometer专利检索，专利查询，专利分析的服务。并且PURPOSE:To obtain a speedometer capable of performing measurement under various conditions in a wide measurable range, by utilizing the mutual relation present between a speckle pattern obtained by irradiating an object with laser beam and the moving speed of the object. CONSTITUTION:Coherent beam from a laser diode 10 propagates through an optical fiber 18 and is allowed to irradiate the surface of an object 15 to be measured during movement from the emitting terminal surface of the optical fiber 18 directed to the object 15 to be measured. The diffused reflected beam generated from the surface of the object 15 to be measured forms a speckle pattern and a part of thereof is incident to an optical fiber 19 to be guided to a photodiode 16. The beam intensity distribution of the speckle pattern is converted to an electric signal by the photodiode 16 to be inputted to a signal processing part 17. This signal processing part 17 calculates the self-correlation length of the speckle pattern and calculates the moving speed of the object to be measured on the basis of said self-correlation length.，下面是Laser speckle speedometer专利的具体信息内容。
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