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	Optical pickup
	YOKOYAMA OSAMU; UCHIYAMA SHOICHI
	1989-09-01
著作权人	SEIKO EPSON CORP
专利号	JP1989220235A
国家	日本
文献子类	发明申请
其他题名	Optical pickup
英文摘要	PURPOSE:To obtain an optical pickup with miniaturized, light weight, and accessible at high speed by mounting an optical system on a floating slider which floats by the shift of the substrate of a recording medium. CONSTITUTION:A convergence type grating coupler 108 consisting of a semiconductor laser 104, a photodetector, and an objective lens and the optical system consisting of an optical waveguide layer 103, etc., which connects the above devices are mounted on the floating slider 201 which floats by the shift of the substrate 303 of the recording medium. In other words, by mounting the optical system on the floating slider which floats with a constant amount of floating over the surface of the substrate of the recording medium by the rotation of the substrate of the recording medium, etc., a distance between the recording medium and the optical system can be kept constant. Therefore, it is possible to make a servo mechanism in a focusing direction unnecessary, and also, to make an electromagnetic driving mechanism for servo unnecessary for performing tracking in a direction of a feed motor like a fixed magnetic disk because the weight of one gram of the optical pickup including the floating slider is extremely light. In such a way, a recording and reproducing device can be miniaturized and operated at high speed.
公开日期	1989-09-01
申请日期	1988-02-29
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/74385]
专题	半导体激光器专利数据库
作者单位	SEIKO EPSON CORP
推荐引用方式 GB/T 7714	YOKOYAMA OSAMU,UCHIYAMA SHOICHI. Optical pickup. JP1989220235A. 1989-09-01.

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