| 用平行光测薄透镜焦距的一种新方法 |
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| 引用本文： | 许巧平. 用平行光测薄透镜焦距的一种新方法[J]. 河南科学, 2013, 0(11): 1860-1862 |
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| 作者姓名： | 许巧平 |
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| 作者单位： | 延安大学物理与电子信息学院,陕西延安716000 |
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| 基金项目： | 国家自然科学基金项目（51301150）;延安大学科研专项基金（YDQ2013-13）;陕西省延安市科技局工业攻关项目（2011kg-12）;陕西省高水平大学建设专项资金资助项目（物理学（2012SXTS05） |
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| 摘 要： | 基于薄透镜焦平面和副光轴的性质，提供了一种用平行光测量透镜焦距的新方法。该方法中的入射光平行于待测透镜的副光轴而非主光轴。该方法的利用可以加深对薄透镜主光轴、副光轴、焦平面等光学概念的理解和应用，进一步理解近轴成像的含义。
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| 关 键 词： | 薄透镜 平行光 焦距 主光轴 副光轴 |
A New Method for Measuring the Focal Length of Thin Lens by Parallel Light |
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| Xu Qiaoping. A New Method for Measuring the Focal Length of Thin Lens by Parallel Light[J]. Henan Science, 2013, 0(11): 1860-1862 |
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| Authors: | Xu Qiaoping |
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| Affiliation: | Xu Qiaoping (College of Physics and Electronic Information, Yah＇ an University, Yan＇an 716000, Shaanxi China) |
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| Abstract: | A novel way for measuring the focal length of the thin lens by parallel light is provided based on the character of focal plane and secondary optical axis. This parallel light in the method is not the light parallel to the main optical axis but secondary optical axis. This method can help us to understand and apply the axis,side axis,focal plane of thin lens and optical concepts,and to further understand the paraxial imaging meaning. |
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| Keywords: | thin lens parallel light focal length main optical axis secondary optical axis |
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