Usually, careful consideration must be given to the relationship between the light source suspended from the ceiling and the positioning of the hologram in order to view the reconstructed image with best condition. 　Is it possible to view the image anywhere, anytime, with a minimum bother?  Yes it can be turned into reality by combining the light source and the hologram.  The following holograms were developed for such purpose.

Palmtop hologram

A 3D image can be seen anywhere and anytime
by unifying the light source and the hologram.

LED is used as the illuminating light source.

●T.Kubota, ”Creating a more attractive hologram,” LEONARDO  25,No.5, 503-506(1992).
●T. Kubota, K. Fujioka and M. Kitagawa: Method for reconstructing a hologram using a compact device, Appl. Opt. 31, 23, 4734-4737(1992).

●T.Kubota and H.Ueda: Compact display system for hologram; Proc. SPIE, 2866,207-214 (1996).
●H. Ueda, E. Shimizu and T. Kubota: Image blur of edge-illuminated holograms; Opt. Eng. 37,1,241-246(1998).

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