Holographic laser and optical pickup

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	Holographic laser and optical pickup
其他题名	Holographic laser and optical pickup
	MASUI, KATSUSHIGE; TSUCHIDA, KAZUHIRO
	2002-07-25
专利权人	SHARP KABUSHIKI KAISHA
公开日期	2002-07-25
授权国家	美国
专利类型	发明申请
摘要	It is an object of the invention to provide a holographic laser and an optical pickup, with which it is possible to read from and write to a plurality of types of optical disks with different read wavelengths, and to achieve a more compact apparatus. The holographic laser includes for example a package, two semiconductor laser elements and a photodiode for reading out signals accommodated within the package, a holographic element positioned proximate to or in close contact with the top of a glass window, and a wavelength separating element positioned proximate to or in close contact with the top of the holographic element. The holographic laser is integrally formed as a single component.
其他摘要	本发明的一个目的是提供一种全息激光器和一种光学拾取器，利用该全息激光器和光学拾取器，可以读取和写入具有不同读取波长的多种类型的光盘，并且实现更紧凑的装置。全息激光器包括例如封装，两个半导体激光器元件和用于读出容纳在封装内的信号的光电二极管，位于玻璃窗顶部附近或与玻璃窗顶部紧密接触的全息元件，以及位于近端的波长分离元件与全息元件的顶部接触或紧密接触。全息激光整体形成为单个部件。
主权项	A holographic laser comprising: a first light source for emitting a light beam L1 of a first wavelength toward an optical disk; a second light source for emitting a light beam L2 of a second wavelength different from the first wavelength toward an optical disk; a wavelength separating element for separating the light beam L1 and the light beam L2 reflected by the respective optical disks; a first holographic element for converging the light beam L1 separated by the wavelength separating element; a second holographic element for converging the light beam L2 separated by the wavelength separating element; and a light receiving element for receiving the light beam L1 converged by the first holographic element and the light beam L2 converged by the second holographic element, wherein the light receiving element is positioned between a focal position of 0th order diffracted light of the first holographic element and a focal position of 0th order diffracted light of the second holographic element; and wherein the first light source, the second light source, the wavelength separating element, the first holographic element, and the second holographic element are integrally formed into a single component.
申请日期	2002-01-24
专利号	US20020097773A1
专利状态	授权
申请号	US10/056255
公开（公告）号	US20020097773A1
IPC 分类号	G02B5/32 \| G11B7/00 \| G11B7/12 \| G11B7/123 \| G11B7/125 \| G11B7/1275 \| G11B7/135 \| G11B7/1353 \| H01S5/022 \| H01S5/0683 \| H01S3/00
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/60785
专题	半导体激光器专利数据库
作者单位	SHARP KABUSHIKI KAISHA
推荐引用方式 GB/T 7714	MASUI, KATSUSHIGE,TSUCHIDA, KAZUHIRO. Holographic laser and optical pickup. US20020097773A1[P]. 2002-07-25.