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首页> 外文会议>Conference on Optical Design and Engineering; Sep 30-Oct 3, 2003; St.Etienne, France >APPLICATION OF PHOTOPOLYMER HOLOGRAPHIC GRATINGS IN ELECTRONIC SPECKLE PATTERN SHEARING INTERFEROMETRY
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APPLICATION OF PHOTOPOLYMER HOLOGRAPHIC GRATINGS IN ELECTRONIC SPECKLE PATTERN SHEARING INTERFEROMETRY

机译：光聚合物全息图在电子散斑图样干涉中的应用

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摘要

Two optical set-ups for electronic speckle pattern shearing interferometry (ESPSI) using photopolymer diffractive optical elements are presented. Holographic gratings are recorded using an acrylamide based photopolymer material. Since the polymerisation process occurs during recording, the holograms are produced without any development or processing. In both ESPSI systems the photopolymer gratings are used to shear the image. In the first ESPSI system only one grating is used in combination with a sheet of ground glass. The distance between the grating and the ground glass can be used to control the amount of the shear. The sheared images on the ground glass are further imaged onto a CCD camera. In the second ESPSI system two gratings are used to shear the image. The gratings are placed between the object and an imaging lens in front of the CCD camera. The distance between the two gratings controls the size of the shear. The ESPSI system with two photopolymer holographic gratings is compact and suitable for industrial applications. Introducing photopolymer holographic gratings in ESPSI gives the advantage of using high aperture optical elements at relatively low price. Both of these interferometric systems are simple and flexible.
机译：提出了两种使用光聚合物衍射光学元件的电子散斑剪切干涉术（ESPSI）的光学装置。使用基于丙烯酰胺的光敏聚合物材料记录全息光栅。由于聚合过程是在记录过程中发生的，因此无需任何显影或处理即可产生全息图。在两个ESPSI系统中，均使用光敏聚合物光栅来剪切图像。在第一个ESPSI系统中，只有一个光栅与一块磨砂玻璃结合使用。光栅和毛玻璃之间的距离可用于控制剪切量。毛玻璃上的剪切图像进一步成像到CCD相机上。在第二个ESPSI系统中，使用两个光栅来剪切图像。光栅放置在物体与CCD摄像机前面的成像镜头之间。两个光栅之间的距离控制剪切的大小。具有两个光敏聚合物全息光栅的ESPSI系统结构紧凑，适合工业应用。在ESPSI中引入光聚合物全息光栅具有以相对较低的价格使用高孔径光学元件的优势。这两种干涉测量系统都很简单灵活。

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