Gec Avionics Limited

Colin K Marshall

Richard K Howard

A method and apparatus for making reflection holograms wherein a film (27) of light sensitive material in which the hologram is to be formed is rotated about a first axis (Y--Y) which is itself rotated about a second axis (X--X) which intersects the first axis at a position (Z) spaced from the film so that a coherent light beam (29), which is directed onto the film and whose axis passes through the point of intersection of the axes, scans the film in a pattern of overlapping narrow bands. The bands may be rectilinear or circular.

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Gravesend, United Kingdom

Colin K Marshall