'Ultimate' emulsion and its applications: a laboratory-made silver halide emulsion of optimized quality for monochromatic pulsed and full color holography

摘要

A ultra-high sensitivity holographic "Ultimate" emulsion (10 nm grains) has been produced, which allows the realization with short exposure times of brigth, large sized, with wide view angle and full color holograms of fragile still subjects or monochromatic pulsed reflection holograms of alived subjects. The high transparency of "Ultimate" emulsions as color transmission holograms makes them highly suitable for mastering, the copies keeping the same performances as the master. Copies on othe rmaterials, especially polymer emulsions are possible. Coating machines have been performed for the production of 36x44 cm triacetate films and 60 x 84 cm glass plates under controlled conditions to temperature and humidity. Also, a homemade portable camera with pulsed YLF or ruby lasers allows to realize holograms in situ of alive subjects on H1 transmission holograms up to 60x80 cm and instant H2 reflection copies up to 30x40 cm. Some examples of holograms are displayed.