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Midori-kan (Astrorama) - Expo Osaka 1970

Midori-kan (Astrorama) at the Exhibition Expo Osaka 1970
© Expo'70
Architect(s) : Yoshiro Ohbayashi

The films, presented by the Midori-kai companies, were presented to be seen and above all for the visitors to become part of the films.
This was the principle behind the large dome "Actrorama", a word composed of "Astro" and "Drama".

To create this experience, years of research into cameras, projectors, lenses, film lights and sound were necessary; as well as the unique design of the pavilion.

Inside, the visitor was totally surrounded by the images and sounds of the film; he was, in fact, part of the film itself. The images covered the entire interior surface. In one sequence, for example, an underwater scene could be seen from all sides.

"Astrorama - Multidimensional World" was the theme of the exhibition. The pavilion consisted of a dome 31 metres high and 46 metres in diameter, made of fibreglass panels reinforced with brightly coloured plastics. The interior projection space was larger than 12 cinema screens.

The upper part was constructed of prefabricated sections which provided a soundproof area for the Astrorama, and could be assembled and disassembled easily.

Five cameras, specially fitted with a wide angle lens, were used to project the spectacular images.

Also displays in the entrance hall showed the works of modern fine art. Visitors could rest here before the film started while listening to a background music specially composed for the Midorikan Astrorama.