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25 February 2014 Development of high-efficiency holographic optical element for LED display
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In this paper, we present the development of full color holographic optical element for light-emitting diodes display application using a photopolymer. The reflection HOE was evaluated by measuring the diffraction efficiencies of holographic volume gratings recorded individually at 633 nm, 532 nm, and 473nm wavelengths. The spectral characterization of the holographic optical element, recorded using a combined single beam, and recorded using sequential beam, was carried out. Practical methods for fabrication of high efficiency holographic optical element by single layer photopolymer were developed. As the reconstruction light source of the hologram, light-emitting diodes of 632nm, 523nm and 465nm in wavelength was used. The results represent a strong confirmation that the special recording method using photopolymer can be employed in future commercial holographic applications.
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Meilan Piao, Sang-Keun Gil, Kwon-Yeon Lee, and Nam Kim "Development of high-efficiency holographic optical element for LED display", Proc. SPIE 9006, Practical Holography XXVIII: Materials and Applications, 90061I (25 February 2014);

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