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Proceedings Paper

A new phase encoding approach for a compact head-up display
Author(s): Jaroslaw Suszek; Michal Makowski; Maciej Sypek; Andrzej Siemion; Andrzej Kolodziejczyk; Andrzej Bartosz
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Paper Abstract

The possibility of encoding multiple asymmetric symbols into a single thin binary Fourier hologram would have a practical application in the design of simple translucent holographic head-up displays. A Fourier hologram displays the encoded images at the infinity so this enables an observation without a time-consuming eye accommodation. Presenting a set of the most crucial signs for a driver in this way is desired, especially by older people with various eyesight disabilities. In this paper a method of holographic design is presented that assumes a combination of a spatial segmentation and carrier frequencies. It allows to achieve multiple reconstructed images selectable by the angle of the incident laser beam. In order to encode several binary symbols into a single Fourier hologram, the chessboard shaped segmentation function is used. An optimized sequence of phase encoding steps and a final direct phase binarization enables recording of asymmetric symbols into a binary hologram. The theoretical analysis is presented, verified numerically and confirmed in the optical experiment. We suggest and describe a practical and highly useful application of such holograms in an inexpensive HUD device for the use of the automotive industry. We present two alternative propositions of car viewing setups.

Paper Details

Date Published: 20 November 2008
PDF: 10 pages
Proc. SPIE 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 714124 (20 November 2008); doi: 10.1117/12.822423
Show Author Affiliations
Jaroslaw Suszek, Warsaw Univ. of Technology (Poland)
Michal Makowski, Warsaw Univ. of Technology (Poland)
Maciej Sypek, Warsaw Univ. of Technology (Poland)
Andrzej Siemion, Warsaw Univ. of Technology (Poland)
Andrzej Kolodziejczyk, Warsaw Univ. of Technology (Poland)
Andrzej Bartosz, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 7141:
16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Agnieszka Popiolek-Masajada; Elzbieta Jankowska; Waclaw Urbanczyk, Editor(s)

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