White light reconstruction holograms, such as rainbow hologram and reflection hologram have the property of producing sharp images even when illuminated with a white light source. The reconstructed images,however,are blured because of spectral-wavelength spread and finite size of the illuminated light source especially when the images are located at a distance from the hologram. In general, the image blur for the reflection hologram is larger than that for the rainbow hologram. We proposed a new type of reflection hologram that can reconstruct a sharp and deep monochromatic image. A holizontal slit are used to record the hologram in the same manner as for the rainbow hologram. The monochromatic images are observed from wide longitudinal range,unlike the case for the rainbow hologram,when it is illuminated with an extended white light source such as a fluorescent lamp.
Tempo KOBAN and magnifying glass (30cmx40cm)
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