Proceedings PaperHolographic Optical Elements In Dichromated Gelatin
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The development and construction of a production process to manufacture holographic optical elements in dichromated gelatin for Head-Up Displays requires that a tight control over the spectral tuning, spectral bandwidth, diffraction efficiency, scatter, cosmetic appearance and environmental stability be established. Once control is established, it becomes possible to produce significant changes to the tuning position, spectral bandwidth and diffraction efficiency, so that holographic optical elements can be produced for a range of applications. This paper examines several holographic optical elements produced by Pilkington P. E. Limited, including retrofit combiners, contrast enhancement filters and narrow band reflection filters. The construction, holographic specification and performance of each of these holographic elements will be outlined and discussed.