Abstract

The coherent backlight unit (BLU) using a holographic optical element (HOE) for full-color flat-panel holographic display is proposed. The HOE BLU consists of two reflection type HOEs that change the optical beam path and shape by diffraction. The illumination area of backlight is 150 mm x 90 mm and the thickness is 10 mm, which is slim compared to other conventional coherent backlight units for holographic display systems. This backlight unit exhibits a total efficiency of 8.0% at red (660 nm), 7.7% at green (532 nm), and 3.2% at blue (460 nm) using optimized recording conditions for each wavelength. As a result, we could get a bright full color hologram image.

© 2017 Optical Society of America

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References

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2015 (3)

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

W. Hu, C. P. Chen, Y. Li, Z. He, X. Li, P. Zhou, J. Lu, and Y. Su, “Improvement of diffraction efficiency of flat-panel coherent backlight for holographic displays,” Opt. Express 23(4), 4726–4735 (2015).
[PubMed]

2013 (3)

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

J. Geng, “Three-dimensional display technologies,” Adv. Opt. Photonics 5(4), 456–535 (2013).
[PubMed]

2007 (1)

A. Putilin and I. Gustomiasov, “Application of holographic elements in displays and planar illuminators,” Proc. SPIE 6637, 66370N (2007).

1993 (1)

1992 (1)

1975 (1)

D. H. Close, “Holographic Optical Elements,” Opt. Eng. 14(5), 408–419 (1975).

Amitai, Y.

An, J.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Berneth, H.

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

Borodin, Y.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Bruder, F.-K.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

Chen, C. P.

W. Hu, C. P. Chen, Y. Li, Z. He, X. Li, P. Zhou, J. Lu, and Y. Su, “Improvement of diffraction efficiency of flat-panel coherent backlight for holographic displays,” Opt. Express 23(4), 4726–4735 (2015).
[PubMed]

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

Choi, C.-H.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Chung, J.-S.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Chung, U.-I.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Close, D. H.

D. H. Close, “Holographic Optical Elements,” Opt. Eng. 14(5), 408–419 (1975).

Dubinin, G.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Dubynin, S.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Fäcke, T.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

Friesem, A. A.

Geng, J.

J. Geng, “Three-dimensional display technologies,” Adv. Opt. Photonics 5(4), 456–535 (2013).
[PubMed]

Gustomiasov, I.

A. Putilin and I. Gustomiasov, “Application of holographic elements in displays and planar illuminators,” Proc. SPIE 6637, 66370N (2007).

Hagen, R.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

He, G.

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

He, Z.

W. Hu, C. P. Chen, Y. Li, Z. He, X. Li, P. Zhou, J. Lu, and Y. Su, “Improvement of diffraction efficiency of flat-panel coherent backlight for holographic displays,” Opt. Express 23(4), 4726–4735 (2015).
[PubMed]

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

Hönel, D.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

Hu, W.

Hwang, S.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Kim, H.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Kim, S. I.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Kleinschmidt, T. P.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

Kopenkin, S.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Koshelev, A.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Lee, H.-S.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Lee, S.-H.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Li, A.

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

Li, X.

W. Hu, C. P. Chen, Y. Li, Z. He, X. Li, P. Zhou, J. Lu, and Y. Su, “Improvement of diffraction efficiency of flat-panel coherent backlight for holographic displays,” Opt. Express 23(4), 4726–4735 (2015).
[PubMed]

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

Li, Y.

Lu, J.

W. Hu, C. P. Chen, Y. Li, Z. He, X. Li, P. Zhou, J. Lu, and Y. Su, “Improvement of diffraction efficiency of flat-panel coherent backlight for holographic displays,” Opt. Express 23(4), 4726–4735 (2015).
[PubMed]

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

Morozov, A. V.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Orselli, E.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

Park, J.-Y.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Patrick, T.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

Putilin, A.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

A. Putilin and I. Gustomiasov, “Application of holographic elements in displays and planar illuminators,” Proc. SPIE 6637, 66370N (2007).

Rewitzm, C.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

Rölle, T.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

Seo, J.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Seo, W.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Shariv, I.

Song, H.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Su, Y.

W. Hu, C. P. Chen, Y. Li, Z. He, X. Li, P. Zhou, J. Lu, and Y. Su, “Improvement of diffraction efficiency of flat-panel coherent backlight for holographic displays,” Opt. Express 23(4), 4726–4735 (2015).
[PubMed]

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

Sung, G.

C.-H. Choi, A. V. Morozov, A. Koshelev, S. Dubynin, G. Dubinin, S.-H. Lee, J.-S. Chung, G. Sung, J. An, H. Song, J. Seo, H. Kim, W. Seo, A. Putilin, S. Kopenkin, Y. Borodin, S. I. Kim, H.-S. Lee, J.-Y. Park, U.-I. Chung, and S. Hwang, “Ultra-slim coherent backlight unit for mobile holographic display,” Proc. SPIE 9556, 955606 (2015).

Upatnieks, J.

Walze, G.

F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. P. Kleinschmidt, T. Patrick, E. Orselli, C. Rewitzm, T. Rölle, and G. Walze, “Diffractive optics in large sizes: computer-generated holograms (CGH) based on Bayfol HX photopolymer,” Proc. SPIE 9385, 93850C (2015).

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

Weiser, M.-S.

H. Berneth, F.-K. Bruder, T. Fäcke, R. Hagen, D. Hönel, T. Rölle, G. Walze, and M.-S. Weiser, “Holographic recordings with high beam ratios on improved Bayfol HX photopolymer,” Proc. SPIE 8776, 877603(2013).

Xiong, Y.

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

Ye, Z.

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

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[PubMed]

Appl. Opt. (1)

Opt. Commun. (1)

Y. Xiong, Z. He, C. P. Chen, X. Li, A. Li, Z. Ye, J. Lu, G. He, and Y. Su, “Coherent backlight system for flat-panel holographic 3D display,” Opt. Commun. 296, 41–46 (2013).

Opt. Eng. (1)

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Opt. Express (1)

Opt. Lett. (1)

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Figures (14)

Fig. 1
Fig. 1

The basic structure of holographic display system.

Fig. 2
Fig. 2

A basic scheme of the holographic display using slim lens.

Fig. 3
Fig. 3

Example of reflection HOE lens. (a) HOE can be fabricated by recording the interference pattern between plane reference wave and spherical signal wave. (b) when conjugated reference beam is illuminated to the HOE, it has a lens function.

Fig. 4
Fig. 4

The relation between Bragg angle and diffraction efficiency at fixed Δn, (a) Transmission volume grating, (b) Reflection volume grating. The diffraction efficiency of transmission volume grating varies greatly in large Bragg angle region than reflection volume grating.

Fig. 5
Fig. 5

(a) the incident beam (blue line) is diffracted into the collimated beam (red line) having a very small angle by H1. (b) H2 diffract the incident collimated beam (red line) is diffracted to a point light (blue line) by H2. (c) HOE BLU design.

Fig. 6
Fig. 6

HOE recording setups (a) H1 and (b) H2.

Fig. 7
Fig. 7

Relation of diffraction efficiency according to RS ratio. The diffraction efficiency is higher than other ratios at RS ratio 1.

Fig. 8
Fig. 8

Diffraction efficiency of HOEs according to refractive index modulation Δn at λ = 532 nm. The max modulation efficiency can be obtained at Δn = 0.03.

Fig. 9
Fig. 9

Measurement method of the diffracted beam intensity of H1.

Fig. 10
Fig. 10

Light flow of HOE BLU.

Fig. 11
Fig. 11

Measured light flows. (A) is the final diffracted beam. Others are scattered and reflected beams by interfaces.

Fig. 12
Fig. 12

(a) picture of fabricated HOE BLU, (b) focal point by H2, (c) - (f) reconstructed images of R, G, B and White, respectively. The reconstructed focal point size is about 2 mm x 1 mm and the signal to noise ratio is 1:100.

Fig. 13
Fig. 13

Holographic display system (a) Schematic diagram and real reconstruction image of color HOE BLU, (b) Real flat-panel holographic display system.

Fig. 14
Fig. 14

(a) Reconstructed image viewed at 50 cm in front of panel and (b) Blurred image viewed on panel. The small boxes in the top right corner of (a) and (b) are the enlarged part of fairy wing.

Tables (2)

Tables Icon

Table 1 Measured efficiencies of H1, H2 and total HOE BLU.

Tables Icon

Table 2 Calculation of total efficiency

Equations (4)

Equations on this page are rendered with MathJax. Learn more.

η R = { tanh( πΔnd λcosα ) } 2
η T = { sin( πΔnd λcosα ) } 2 ,
η H1 =1 I tran I in .
I 1 = I 0 ×( 1 R 1 ( θ 1 ) ), I 2 = I 0 ×( 1 R 2 ( θ 1 ) )× η H1 , I 3 = I 2 ×( 1 R 3 ( θ 2 ) )× η H2 , I 4 = I 3 ×( 1 R 4 ( θ 1 ) ),

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