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用于OCT动态聚焦的液晶菲涅尔波带透镜研究 被引量:2

Liquid crystal Fresnel zone lens for dynamic focusing in OCT
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摘要 提出了利用液晶菲涅尔波带透镜实现光学相干层析成像(OCT)动态聚焦的方法。根据扭曲相液晶空间光调制器(TN-LCSLM)的光学特性,设计了适用于OCT动态聚焦的菲涅耳波带透镜。利用TN-LCSLM型菲涅耳波带透镜进行了变焦控制实验,焦距实测结果与设计值比较吻合。此外,本文讨论了采用TN-LCSLM型菲涅耳波带透镜实施动态聚焦涉及到的一些问题。 An approach to realize dynamic focusing in Optical Coherence Tomography (OCT) is proposed by using liquid crystal Fresnel zone lens. Fresnel zone lens suitable for dynamic focusing in OCT is designed based on optical characteristics of Twisted Nematic Liquid Crystal Spatial light Modulator (TN-LCSLM). Experiments on dynamic focusing control of the TN-LCSLM based on Fresnel zone lens are carried out. Measured focal lengths are in good agreement with the designed ones. Discussion on associated problems with the TN-LCSLM based on Fresnel zone lens for dynamic focusing is carried out as well.
出处 《光电工程》 EI CAS CSCD 北大核心 2007年第10期124-128,共5页 Opto-Electronic Engineering
基金 国家863计划资助项目(2006AA02Z4E0) 国家自然科学基金项目(60378041 60478040) 浙江自然科学基金项目(Z603003) 教育部新世纪优秀人才支持计划 浙江省"新世纪151人才工程"资助项目
关键词 光学相干层析成像(OCT) 动态聚焦 扭曲相液晶空间光调制器 菲涅尔波带透镜 optical coherence tomography dynamic focusing twisted nematic liquid crystal spatial light modulator Fresnel zone lens
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参考文献14

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