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	Laser doppler blood flow measuring method and device
	HACHIGA, TADASHI; ISHIDA, HIROKI; AKIGUCHI, SHUNSUKE; SHIRAKAWA, HIROKI; ANDOH, TSUGUNOBU; KURAISHI, YASUSHI
	2010-11-04
著作权人	INSTITUTE OF NATIONAL COLLEGES OF TECHNOLOGY, JAPAN
专利号	US20100280398A1
国家	美国
文献子类	发明申请
其他题名	Laser doppler blood flow measuring method and device
英文摘要	[Subject] To provide laser Doppler blood flow measuring method and device which achieve multi-dimensional measurement efficiently at a high degree of accuracy over a wide range with a simple optical system and device. [Solving Means] Laser light from a semiconductor laser 12 is split and formed into sheet lights Ls using a cylindrical lens 22, and the sheet lights Ls are crossed with each other at a predetermined position. A lens system 30 configured to form an image of scattered lights into a linear shape at a linear irradiation site Lx where the sheet lights Ls cross with each other is provided. An optical fiber array 32 having a plurality of optical fibers 34 is provided at an image-forming position of the lens system 30. Avalanche photodiodes 42 configured to convert the scattered lights which are shifted in frequency by the Doppler effect caused by the blood flow into electric signals for the each optical fiber 34 are provided. The blood flow velocity in a tissue of a biological body at the linear irradiation site Lx is calculated from the scattered lights transformed from the laser light by being shifted in frequency by the Doppler effect and is scanned for the each optical fiber 34, whereby the blood flow velocity in the blood vessel in a predetermined area in the biological body is calculated.
公开日期	2010-11-04
申请日期	2008-12-19
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/58371]
专题	半导体激光器专利数据库
作者单位	INSTITUTE OF NATIONAL COLLEGES OF TECHNOLOGY, JAPAN
推荐引用方式 GB/T 7714	HACHIGA, TADASHI,ISHIDA, HIROKI,AKIGUCHI, SHUNSUKE,et al. Laser doppler blood flow measuring method and device. US20100280398A1. 2010-11-04.

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