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	Optical navigation device that utilizes a vertical cavity surface emitting laser (VCSEL) configured to emit visible coherent light
	OOI, KWANG BENG; TAI, LI CHONG; TAN, SHAN CHONG
	2008-06-19
著作权人	PIXART IMAGING INC.
专利号	US20080142691A1
国家	美国
文献子类	发明申请
其他题名	Optical navigation device that utilizes a vertical cavity surface emitting laser (VCSEL) configured to emit visible coherent light
英文摘要	An optical navigation device includes a housing, a light source, a navigation sensor, and optics. In accordance with the invention, the light source is a vertical cavity surface emitting laser (VCSEL) that is configured to generate coherent light in the visible light spectrum. For example, the VCSEL generates red coherent light in the range of 600-700 nm. In an embodiment, the VCSEL generates red coherent light at 665 nm±20 nm. Because the light generated by the VCSEL is in the visible light spectrum, a human will sense contact with the corresponding beam and will naturally react to avoid injury. This enhances the overall safety of an optical mouse. Additionally, when using a VCSEL that generates visible red light, it is easy to visually determine whether or not the beam is focused directly on a measurement sensor during calibration.
公开日期	2008-06-19
申请日期	2006-12-19
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/85459]
专题	半导体激光器专利数据库
作者单位	PIXART IMAGING INC.
推荐引用方式 GB/T 7714	OOI, KWANG BENG,TAI, LI CHONG,TAN, SHAN CHONG. Optical navigation device that utilizes a vertical cavity surface emitting laser (VCSEL) configured to emit visible coherent light. US20080142691A1. 2008-06-19.

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