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	Optically based method and apparatus for detecting a phase transition temperature of a material of interest
	DIEBOLD, GERALD J.
	1999-08-03
著作权人	DIGIMELT INC.
专利号	US5933565
国家	美国
文献子类	授权发明
其他题名	Optically based method and apparatus for detecting a phase transition temperature of a material of interest
英文摘要	The melting point of a test substance is determined by placing it in a capillary tube within a heated block. The temperature of the block and sample are gradually increased using an electrical heater. The output of a light emitting diode or solid state laser is coupled into an optical fiber that carries the radiation to the capillary tube containing the test substance. A second fiber that is connected to a detector collects radiation from the capillary tube. At the melting point of a solid, or possibly at the boiling point of a liquid, the light scattering and transmissive properties of the test substance change causing the light signal collected by the second fiber to change. The phase transition point is recorded as a change in the output voltage from the detector. The melting point detector is equipped with a number of ports for capillary tubes, fibers, light emitters and detectors so that many phase transition points of different samples can be determined in one heating cycle. The outputs from the detectors are input to a computer and the detector signals are correlated with the temperature of the block.
公开日期	1999-08-03
申请日期	1998-01-20
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/36466]
专题	半导体激光器专利数据库
作者单位	DIGIMELT INC.
推荐引用方式 GB/T 7714	DIEBOLD, GERALD J.. Optically based method and apparatus for detecting a phase transition temperature of a material of interest. US5933565. 1999-08-03.

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