论文部分内容阅读
全息测量多维(二维或三维)位移的基本方法是多张全息图法。在三维静位移方面,虽然出现了一些单张全息图法,但不是对实验仪器和技术条件要求过严,就是精确度降低。至于三维振动位移的实际测量(只用一张全息图),至今尚很少报道。作者提出了一种单张全息图法——反射物光法,保持了多张全息图法的优点,而空间布置又极简单,实验证明可用来测量三维振动位移。除了一束物光直接射向干板外,还有两束物光分别由两面镜子(其所在平面皆与干板平面相交)反射到同一块干板上。这样制成的全息图,便能再现出物体的三个全息像。从同一观察点观察这三个像的结果,相当
Holographic Measurement Multi-dimensional (two-dimensional or three-dimensional) displacement of the basic method is multiple holograms. In the case of three-dimensional static displacement, although some single-hologram methods have appeared, they are not rigorous in terms of experimental instruments and technical conditions or are less accurate. As for the actual measurement of three-dimensional vibration displacement (using only one hologram), little has been reported so far. The author presents a single hologram method - the reflectivity of the light method to maintain the advantages of multiple holograms, and the spatial layout and extremely simple, experimental proof can be used to measure three-dimensional vibration displacement. In addition to a bundle of objects directed at the dry plate, there are two beams of light, respectively, by the two mirrors (where the plane intersects with the plane of the plane) reflected to the same dry board. The hologram made in this way reproduces the three holograms of the object. Observe the results of these three images from the same observation point, quite