Holographic diffuser for multichannel restricted displays

Abstract

Diffusers play an important role in modern days display technology. Holographic diffusers offer effective control on various parameters of the diffused light like diffusion angle, uniformity of light etc. Present work reports a procedure for realization of a holographic diffuser through which multichannel restricted view display is achieved such that information can be conveyed to and viewed from multiple selective viewpoints only. Such type of diffusers will be helpful in enhancing security feature of the displayed information by enabling only authenticated persons to have access to the information. Fabrication process of the holographic diffuser is described and experimental results are discussed.