Practical Holography, 4th Edition

Chapter 21

Embossed Holograms

‘The thing shall be done! Bring me paper and ink,

The best there is time to procure.’

Lewis Carroll

The Hunting of the Snark

In the early days of photography, a question constantly asked was: “When are we going to see a photograph printed in a book by ordinary printing methods?” Necessity being the mother of invention, a method of combining photography with engraving was eventually found, and photogravure was born, to be followed soon afterward by the halftone screen process. A similar question was asked of holography in its early days; and, sure enough, a method was eventually found, this time combining holography with techniques borrowed largely from the electronics and sound recording industries. It became possible ...