Collaborator
Lloyd Cross
A pioneer of holography and the multiplex hologram who collaborated with Paul at Advanced Laser Projection and is named with him on the Image Mover patent.
Lloyd G. Cross was a pioneer of holography — closely associated with the development of the multiplex (integral) hologram — whose work bridged optical science and art. He collaborated with Paul at Advanced Laser Projection and is named with him on U.S. Patent 5,365,288, Image Mover (1994).
Cross’s lifelong expertise in bending and reconstructing light with precision made him a fitting collaborator on a patent about steering a projected image through optics.
Research in progress
We are documenting the specifics of Lloyd’s collaboration with Paul and his contribution to the optical design. Corrections and firsthand accounts are welcome.
The technique
How a multiplex hologram works
Record the motion
The subject turns on a turntable while a movie camera shoots a full sequence of frames — one slightly different view for every angle.
Transfer each frame
Laser light records each frame as one narrow vertical strip on holographic film — hundreds of slits standing side by side, each holding a different view.
View in three dimensions
Curved into a cylinder and lit from below, the strips replay as a three-dimensional image — a different view to each eye, and it moves as you walk around it.