Capabilities of diffractive optical elements for real ... - ResearchGate

7. CONCLUSIONSIn conclusion, capabilities of multi-order diffractive optical elements for real-time holographic displays have beendiscussed. A backlight design incorporating an array of multi-order DOE having a large numerical aperture hasbeen proposed. To evaluate its performance experimentally, we have fabricated a single multi-order DOE lenswith an f-number of 2 by diamond turning and molding in acrylate. We have characterized the surface qualityand profile and analyzed the optical performance by interferometric tests. From both theoretical analysis andexperimental studies it became apparent that the most crucial parameters of multi-order DOE are best-matchedoperation wavelengths and an accurate blaze depth. In spite of their needs in tight tolerances, multi-orderdiffractive elements possess significant potential for holographic displays, since they can be designed very flexiblyand operate multi-spectrally.ACKNOWLEDGEMENTSThe authors wish to gratefully acknowledge Steffen Buschbeck for his help in performing some of the experiments.REFERENCES1. A. Schwerdtner, N. Leister, and R. Häussler, “A new approach to electro-holography for TV and projectiondisplays,” in SID, p. 32.3, 2007.2. A. Schwerdtner, R. Häussler, and N. Leister, “A new approach to electro-holographic displays for largeobject reconstructions,” in Adaptive Optics: Analysis and Methods/Computational Optical Sensing andImaging/Information Photonics/Signal Recovery and Synthesis Topical Meetings on CD-ROM, p. PMA5,Optical Society of America, 2007.3. D. W. Sweeney and G. E. Sommargren, “Harmonic diffractive lenses,” Applied Optics 34(14), p. 2469, 1995.4. D. Faklis and G. M. Morris, “Spectral properties of multiorder diffractive lenses,” Applied Optics 34(14),p. 2462, 1995.5. S. Sinzinger and M. Testorf, “Transition between diffractive and refractive micro-optical components,”Applied Optics 34, pp. 5970–+, Sept. 1995.6. M. Rossi, R. E. Kunz, and H. P. Herzig, “Refractive and diffractive properties of planar micro-opticalelements,” Applied Optics 34, pp. 5996–6006, Sept. 1995.7. T. R. M. Sales and G. M. Morris, “Diffractive refractive behavior of kinoform lenses,” Applied Optics 36,pp. 253–257, Jan. 1997.8. A. Schwerdtner, R. Häussler, and N. Leister, “Large holographic displays for real-time applications,” in PracticalHolography XXII: Materials and Applications, Proceedings of the SPIE 6912, SPIE–The InternationalSociety for Optical Engineering, 2008.9. A. Schwerdtner, R. Häussler, and N. Leister, “Large holographic displays as an alternative to stereoscopicdisplays,” in Stereoscopic Displays and Applications XIX, Proceedings of the SPIE 6803, SPIE–The InternationalSociety for Optical Engineering, 2008.10. L. B. Lesem, P. M. Hirsch, and J. A. Jordan, Jr, “The kinoform: a new wavefront reconstruction device,”IBM J. Res. Develop. 13, pp. 150–155, 1969.11. D. A. Buralli, G. M. Morris, and J. R. Rogers, “Optical performance of holographic kinoforms,” AppliedOptics 28(5), pp. 976–983, 1989.12. S. Sinzinger and J. Jahns, Microoptics, Wiley-VCH, 2nd ed., 2003.69130