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英国阿伯丁大学 J.Watson 研究组关于水下全息术的工作已导致发展一种具有6个自由度的定位装置。该工作包括水下物体全息图的记录和随后实时图象在水上空气中的重现。重现全息图时,重要的是保持全息干板完全静止并能精确对其定位。该组希望能在三维直角坐标方向调整干板位置,并稍绕该三轴转动。因此需要一种六个自由度的全息干板固定器。他们与格拉德公司商谈了这种全息干板固定器的制作。该装置必须有低的外形,以允许激光束宽角入射和出射。如有必要,这种设计能使重现的全息图象在距干板5～6cm 处无障
J. Watson’s group work on underwater holography at the University of Aberdeen, UK, has led to the development of a positioning device with six degrees of freedom. This work includes the recording of underwater object holograms and the subsequent reappearance of real-time images in waterborne air. When reproducing the hologram, it is important to keep the holographic plate completely stationary and to precisely position it. The group hopes to adjust the position of the dry plate in the direction of three-dimensional Cartesian coordinates and rotate about the three axes. There is therefore a need for a six degree of freedom holographic plate retainer. They talked to Glad to make the holographic plate fixer. The device must have a low profile to allow the laser beam to enter and exit at a wide angle. If necessary, this design enables reproducible holographic images at a distance of 5 to 6 cm from the dry plate