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Proceedings Paper

Diffraction properties studies of windshield-laminated photopolymer holograms
Author(s): Weichung Chao; Chao-Hsu Tsai; Jung-Chieh Su
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Paper Abstract

A windshield laminated hologram is an important application in automotive head-up displays. Properties of these holograms generally produce changes during processing. To predict changes accurately, the diffraction efficiency measurement etc. were apparently used to characterize their diffraction properties. This paper considers the actual structure of a windscreen which is composed of photopolymer hologram within the laminate. The photopolymer hologram, which was sandwiched between a polyvinylbutyral layer and glass ply, was treated at high temperature up to 140 degree(s)C and about 12.5 kg/cm2 pressure; as used in a standard windscreen production process. The fringe planes of laminated hologram are generally sensitive to external parameters during process, such as pressure effects. In this paper, the pressure effect on diffraction properties is investigated to characterize windshield laminated photopolymer holograms. A theoretical model was proposed to approach the pressure effect in fringe plane of laminated hologram. A comparison of nonslanted and slanted holograms are analyzed with experimental data.

Paper Details

Date Published: 30 September 1996
PDF: 9 pages
Proc. SPIE 2892, Display Devices and Systems, (30 September 1996); doi: 10.1117/12.253333
Show Author Affiliations
Weichung Chao, Industrial Technology Research Institute (Taiwan)
Chao-Hsu Tsai, Industrial Technology Research Institute (Taiwan)
Jung-Chieh Su, Industrial Technology Research Institute (Taiwan)

Published in SPIE Proceedings Vol. 2892:
Display Devices and Systems
Eric G. Lean; Zhiren Tian; Bao Gang Wu, Editor(s)

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