Abstract: This paper is concerned with the hologram fluctuating and spinning in a large kaleidoscope. The authors have been studying many display systems for fluctuating the image of rainbow holograms. In the prior systems the authors fluctuated holograms by using several assistant devices. In the new system holograms are fluctuated only by the intention and the operation of the observer. This simple system without surplus is one of the ideal fluctuation holograms. Two types of kaleidoscopes are introduced in this paper. The one is the prism kaleidoscope that has the popular shape made of three rectangles. It provides the observer many colorful reflected images of a rainbow hologram. The other is the pyramid kaleidoscope that has the unique shape made of three trapezoids. It provides the observer complicate and fantastic images of a rainbow hologram.!1
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