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Formation of Optical Elements by Holography

IP.com Disclosure Number: IPCOM000093300D
Original Publication Date: 1967-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Sincerbox, GT: AUTHOR

Abstract

Holographic recording techniques are employed to generate elements which simulate the properties of optical elements such as a lens, prism, filter, grating, mirror or phase plate.

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Formation of Optical Elements by Holography

Holographic recording techniques are employed to generate elements which simulate the properties of optical elements such as a lens, prism, filter, grating, mirror or phase plate.

The formation of an optical element having the characteristics of a lens-prism combination is depicted in A1. A reference beam of light 1 is directed at photographic emulsion 2. A second beam of light 3 is directed through a plate having pinhole 4. The light is scattered into beam 5 by pinhole 4 and interferes in emulsion 2 with beam 1.

After emulsion 2 is processed into hologram 7, drawing A2, it has the properties of both a lens and a prism. Illumination of hologram 7 by light beam 6 focuses the rays at point 9. The distance between point 9 and hologram 7 is the same as the distance between pinhole 4 and emulsion 2. The angle of deflection of beam 8 is the same as the angle of incidence of beam 5 used in the formation of the hologram.

The holographic recording technique is also utilized in forming fly's eye lenses. Such a device has the feature of nonlocalizing of the resulting lenses in the array. A holographic fly's eye lens is distributed over the entire photographic plate. At the same time, the properties of the other lenses are not affected.

In drawing B1, a fly's eye lens is formed by illuminating a photographic emulsion 11 with a reference beam of light 10 and beam 13 illuminating pinhole array 12. The latter scatters beam 13 into a n...