| 激光干涉自动调焦原理和方法 |
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| 引用本文： | 张凤林 刘铁根 等. 激光干涉自动调焦原理和方法[J]. 天津大学学报(自然科学与工程技术版), 1993, 0(2): 43-49 |
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| 作者姓名： | 张凤林 刘铁根 等 |
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| 作者单位： | 天津大学精密仪器工程系(张凤林，刘铁根，武进田)，天津大学精密仪器工程系(赵彤) |
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| 摘 要： | 论述采用激光干涉原理自动调焦的方法，被调焦的光学系统视为双光束干涉光路的一部分，从干涉纺中取得光学系统的调焦信息，通过由CC电器件，微机，步进电机组成的光电系统对离焦量进行检测和补偿实现自动调焦，这种方法与已有的相关法和对比度法相比，调焦精度高，易于实现，有较高的实用性。
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| 关 键 词： | 激光干涉 干涉图 自动调焦 |
OPTICAL AUTOMATIC FOCUSSING BY LASER WAVE INTERFERENCE |
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| Zhang Fenglin Liu Tiegen Wu Jintian Zhao Tong. OPTICAL AUTOMATIC FOCUSSING BY LASER WAVE INTERFERENCE[J]. Journal of Tianjin University(Science and Technology), 1993, 0(2): 43-49 |
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| Authors: | Zhang Fenglin Liu Tiegen Wu Jintian Zhao Tong |
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| Affiliation: | Dept. of Precision Instruments Engineering |
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| Abstract: | Optical automatic focussing based on laser light wave interference is described in this paper. The procedure is as follows: to transform the optical system into a part of an interference optical system. The focussing information can be retrieved from interferograms, the out of focussing information can be detected and compensated with the optical-electronic system consisting of CCD, a microcomputcr and steppermotor. The method is different from the exsisting ones such as correllation method and contrast-response characteristic. The focussing accuracy is high, easy to put into practice and has potential applications. |
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| Keywords: | laser wave interference interferograms automatic focussing |
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