| 光学头光束孔径匹配 |
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| 引用本文： | 曹向英,裴先登,陈海清.光学头光束孔径匹配[J].光学技术,1996(5). |
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| 作者姓名： | 曹向英 裴先登 陈海清 |
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| 作者单位： | 华中理工大学计算机系外存储系统国家实验室 |
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| 摘 要： | 光学头是光盘存储器的核心部件，光学头光束孔径匹配是光学头设计的一个至关重要的问题。必须合理地确定光源的光束口径与光盘物镜孔径比值，才能保证其光能量耦合效率，并获得较小的光斑尺寸和合理的焦深。本文以衍射光学为基础，详尽地分析了光束孔径匹配对光能耦合效率、光斑尺寸、物镜焦深的影响。
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| 关 键 词： | 光盘 光学 头孔径匹配 |
Aperture matching in optical disk head |
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| Cao Xiangying,Pei Xiandeng,Chen Haiqing.Aperture matching in optical disk head[J].Optical Technique,1996(5). |
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| Authors: | Cao Xiangying Pei Xiandeng Chen Haiqing |
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| Abstract: | Optical head is the core device of the optical disk drive. The aperture matching is the most important problems of optical head design. We must design the ratio of the source beam size and aperture of object lens reasonably to assure energy matching ratio (EMR) and to achieve smaller size of focus point and reasonable focus depth. Based on the diffraction optics, this paper analysis the effect of aperture matching on EMR, size of focus point and focus depth of the object in detail. |
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| Keywords: | optical disk optical head aperture matching |
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