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	Transmissive apparatus and method for optically sensing relative torque employing moire fringes
	CHEN, BO SU
	2003-01-23
著作权人	HONEYWELL INTERNATIONAL, INC.
专利号	US20030015591A1
国家	美国
文献子类	发明申请
其他题名	Transmissive apparatus and method for optically sensing relative torque employing moire fringes
英文摘要	An apparatus and method for analyzing the performance of a system having at least one rotating member therein are disclosed. Light is directed from a light source to intercept an encoded portion of the rotating member. A portion of the light is transmitted from the encoded portion of the rotating member. The transmitted portion of the light can be then detected to recover performance information maintained therein, wherein the performance information contains performance characteristics of the system. A mechanism for transmitting a portion of the light from the encoded portion of the rotating member is also provided. A diffracted portion of the light can be detected to recover performance information. The light source can be configured as a vertical cavity surface emitting laser (VCSEL). The encoded portion of rotating members thereof may comprise a dual layer bar code. Images from a first encoded surface may interact with an image from a second encoded surface after the light beam is transmitted through the second rotating surface to produce Moirí fringes.
公开日期	2003-01-23
申请日期	2001-07-17
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/63855]
专题	半导体激光器专利数据库
作者单位	HONEYWELL INTERNATIONAL, INC.
推荐引用方式 GB/T 7714	CHEN, BO SU. Transmissive apparatus and method for optically sensing relative torque employing moire fringes. US20030015591A1. 2003-01-23.

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