Holographic medium and process for use thereof

US5759721A · kind A · utility

Assignee

• Polaroid Corporation · US

Inventors

• Pradeep K. Dhal · Acton, US
• Michael Horner · Neustadt, DE
• Richard T. Ingwall · Newton, US
• Eric S. Kolb · Acton, US
• Parag G. Mehta · Peabody, US
• Richard A. Minns · Arlington, US
• Howard G. Schild · Watertown, US
• David A. Waldman · Concord, US

Key dates

• Filing date: Nov 1, 1996
• Grant date: Jun 2, 1998
• Expiry date: Nov 1, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G03H2260/12
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A holographic recording medium comprises an acid generator capable of producing an acid upon exposure to actinic radiation; a binder; and at least one monomer or oligomer capable of undergoing cationic polymerization initiated by the acid produced from the acid generator. This recording medium is not subject to the disadvantages (for example, oxygen sensitivity) associated with radical-polymerized prior art holographic recording media.