Abstract

A LCD backlighting device that uses a diffractive light extractor has been developed for applications in which pointlike light sources are employed. The novel system eliminates the images of light sources, which appear as bright lines emanating from each source in the conventional diffractive approach. In addition, the system illuminates the LCD uniformly: Modulation of the diffractive structure as a function of position is used to control the output field of this extended planar light source.

© 2001 Optical Society of America

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References

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  1. Semiconductor Industry Association, The National Technology Roadmap for Semiconductors, 1997 ed. (Semiconductor Industry Association, San Jose, California). For recent information, see http://public.itrs.net .
  2. See product information on batteries, for example at http://www.nokia.com .
  3. D. J. Schertler, N. George, “Uniform scattering patterns from grating-diffuser cascades for display applications,” Appl. Opt. 38, 291–303 (1999).
    [CrossRef]
  4. B. Layet, I. G. Cormack, M. R. Taghizadeh, “Stripe color separation with diffractive optics,” App. Opt. 38, 7193–7201 (1999).
    [CrossRef]
  5. J. Turunen, F. Wyrowski, eds., Diffractive Optics for Industrial and Commercial Applications (Wiley, Berlin, 1997).
  6. J. M. Teijido, H. P. Herzig, R. Dändliger, “Design of a non-conventional illumination system using a scattering light pipe,” in Design and Engineering of Optical Systems, J. J. Braat, ed., Proc. SPIE2774, 747–756 (1996).
  7. A. Horibe, M. Baba, E. Nihei, Y. Koike, “High-efficiency and high-visual-quality LCD backlighting system,” SID Symp. 29, 153–156 (1998).
    [CrossRef]
  8. J. M. Teijido, H. P. Herzig, R. Dändliger, “Illumination light pipe using micro-optics as diffuser,” in Holographic and Diffractive Techniques, G. J. Dansmann, ed., Proc. SPIE2951, 146–155 (1996).
  9. C.-Y. Tai, “A small-area backlight employing divergent-angle beam rotator and unique double-layer micro-prisms,” SID Symp. 29, 556–559 (1998).
    [CrossRef]
  10. S.-I. Ochiai, “Light guide plates and light guide plate assembly utilizing diffraction grating,” U.S. patent5,703,667 (30December1997).
  11. J. Turunen, “Diffraction theory of microrelief gratings,” in Micro-Optics: Elements, Systems and Applications, H. P. Herzig, ed. (Taylor & Francis, London, 1997), chap. 2.
  12. T. Tamir, ed., Integrated Optics, 2nd ed. (Springer-Verlag, Berlin, 1979).
  13. S. T. Peng, T. Tamir, H. L. Bertoni, “Theory of periodic dielectric waveguides,” IEEE Trans. Microwave Theory Tech. MTT-23, 123–133 (1975).
    [CrossRef]
  14. T. Tamir, S. T. Peng, “Analysis and design of grating couplers,” Appl. Opt. 14, 235–254 (1977).

1999

B. Layet, I. G. Cormack, M. R. Taghizadeh, “Stripe color separation with diffractive optics,” App. Opt. 38, 7193–7201 (1999).
[CrossRef]

D. J. Schertler, N. George, “Uniform scattering patterns from grating-diffuser cascades for display applications,” Appl. Opt. 38, 291–303 (1999).
[CrossRef]

1998

A. Horibe, M. Baba, E. Nihei, Y. Koike, “High-efficiency and high-visual-quality LCD backlighting system,” SID Symp. 29, 153–156 (1998).
[CrossRef]

C.-Y. Tai, “A small-area backlight employing divergent-angle beam rotator and unique double-layer micro-prisms,” SID Symp. 29, 556–559 (1998).
[CrossRef]

1977

T. Tamir, S. T. Peng, “Analysis and design of grating couplers,” Appl. Opt. 14, 235–254 (1977).

1975

S. T. Peng, T. Tamir, H. L. Bertoni, “Theory of periodic dielectric waveguides,” IEEE Trans. Microwave Theory Tech. MTT-23, 123–133 (1975).
[CrossRef]

Baba, M.

A. Horibe, M. Baba, E. Nihei, Y. Koike, “High-efficiency and high-visual-quality LCD backlighting system,” SID Symp. 29, 153–156 (1998).
[CrossRef]

Bertoni, H. L.

S. T. Peng, T. Tamir, H. L. Bertoni, “Theory of periodic dielectric waveguides,” IEEE Trans. Microwave Theory Tech. MTT-23, 123–133 (1975).
[CrossRef]

Cormack, I. G.

B. Layet, I. G. Cormack, M. R. Taghizadeh, “Stripe color separation with diffractive optics,” App. Opt. 38, 7193–7201 (1999).
[CrossRef]

Dändliger, R.

J. M. Teijido, H. P. Herzig, R. Dändliger, “Illumination light pipe using micro-optics as diffuser,” in Holographic and Diffractive Techniques, G. J. Dansmann, ed., Proc. SPIE2951, 146–155 (1996).

J. M. Teijido, H. P. Herzig, R. Dändliger, “Design of a non-conventional illumination system using a scattering light pipe,” in Design and Engineering of Optical Systems, J. J. Braat, ed., Proc. SPIE2774, 747–756 (1996).

George, N.

Herzig, H. P.

J. M. Teijido, H. P. Herzig, R. Dändliger, “Design of a non-conventional illumination system using a scattering light pipe,” in Design and Engineering of Optical Systems, J. J. Braat, ed., Proc. SPIE2774, 747–756 (1996).

J. M. Teijido, H. P. Herzig, R. Dändliger, “Illumination light pipe using micro-optics as diffuser,” in Holographic and Diffractive Techniques, G. J. Dansmann, ed., Proc. SPIE2951, 146–155 (1996).

Horibe, A.

A. Horibe, M. Baba, E. Nihei, Y. Koike, “High-efficiency and high-visual-quality LCD backlighting system,” SID Symp. 29, 153–156 (1998).
[CrossRef]

Koike, Y.

A. Horibe, M. Baba, E. Nihei, Y. Koike, “High-efficiency and high-visual-quality LCD backlighting system,” SID Symp. 29, 153–156 (1998).
[CrossRef]

Layet, B.

B. Layet, I. G. Cormack, M. R. Taghizadeh, “Stripe color separation with diffractive optics,” App. Opt. 38, 7193–7201 (1999).
[CrossRef]

Nihei, E.

A. Horibe, M. Baba, E. Nihei, Y. Koike, “High-efficiency and high-visual-quality LCD backlighting system,” SID Symp. 29, 153–156 (1998).
[CrossRef]

Ochiai, S.-I.

S.-I. Ochiai, “Light guide plates and light guide plate assembly utilizing diffraction grating,” U.S. patent5,703,667 (30December1997).

Peng, S. T.

T. Tamir, S. T. Peng, “Analysis and design of grating couplers,” Appl. Opt. 14, 235–254 (1977).

S. T. Peng, T. Tamir, H. L. Bertoni, “Theory of periodic dielectric waveguides,” IEEE Trans. Microwave Theory Tech. MTT-23, 123–133 (1975).
[CrossRef]

Schertler, D. J.

Taghizadeh, M. R.

B. Layet, I. G. Cormack, M. R. Taghizadeh, “Stripe color separation with diffractive optics,” App. Opt. 38, 7193–7201 (1999).
[CrossRef]

Tai, C.-Y.

C.-Y. Tai, “A small-area backlight employing divergent-angle beam rotator and unique double-layer micro-prisms,” SID Symp. 29, 556–559 (1998).
[CrossRef]

Tamir, T.

T. Tamir, S. T. Peng, “Analysis and design of grating couplers,” Appl. Opt. 14, 235–254 (1977).

S. T. Peng, T. Tamir, H. L. Bertoni, “Theory of periodic dielectric waveguides,” IEEE Trans. Microwave Theory Tech. MTT-23, 123–133 (1975).
[CrossRef]

Teijido, J. M.

J. M. Teijido, H. P. Herzig, R. Dändliger, “Illumination light pipe using micro-optics as diffuser,” in Holographic and Diffractive Techniques, G. J. Dansmann, ed., Proc. SPIE2951, 146–155 (1996).

J. M. Teijido, H. P. Herzig, R. Dändliger, “Design of a non-conventional illumination system using a scattering light pipe,” in Design and Engineering of Optical Systems, J. J. Braat, ed., Proc. SPIE2774, 747–756 (1996).

Turunen, J.

J. Turunen, “Diffraction theory of microrelief gratings,” in Micro-Optics: Elements, Systems and Applications, H. P. Herzig, ed. (Taylor & Francis, London, 1997), chap. 2.

App. Opt.

B. Layet, I. G. Cormack, M. R. Taghizadeh, “Stripe color separation with diffractive optics,” App. Opt. 38, 7193–7201 (1999).
[CrossRef]

Appl. Opt.

IEEE Trans. Microwave Theory Tech.

S. T. Peng, T. Tamir, H. L. Bertoni, “Theory of periodic dielectric waveguides,” IEEE Trans. Microwave Theory Tech. MTT-23, 123–133 (1975).
[CrossRef]

SID Symp.

A. Horibe, M. Baba, E. Nihei, Y. Koike, “High-efficiency and high-visual-quality LCD backlighting system,” SID Symp. 29, 153–156 (1998).
[CrossRef]

C.-Y. Tai, “A small-area backlight employing divergent-angle beam rotator and unique double-layer micro-prisms,” SID Symp. 29, 556–559 (1998).
[CrossRef]

Other

S.-I. Ochiai, “Light guide plates and light guide plate assembly utilizing diffraction grating,” U.S. patent5,703,667 (30December1997).

J. Turunen, “Diffraction theory of microrelief gratings,” in Micro-Optics: Elements, Systems and Applications, H. P. Herzig, ed. (Taylor & Francis, London, 1997), chap. 2.

T. Tamir, ed., Integrated Optics, 2nd ed. (Springer-Verlag, Berlin, 1979).

J. Turunen, F. Wyrowski, eds., Diffractive Optics for Industrial and Commercial Applications (Wiley, Berlin, 1997).

J. M. Teijido, H. P. Herzig, R. Dändliger, “Design of a non-conventional illumination system using a scattering light pipe,” in Design and Engineering of Optical Systems, J. J. Braat, ed., Proc. SPIE2774, 747–756 (1996).

Semiconductor Industry Association, The National Technology Roadmap for Semiconductors, 1997 ed. (Semiconductor Industry Association, San Jose, California). For recent information, see http://public.itrs.net .

See product information on batteries, for example at http://www.nokia.com .

J. M. Teijido, H. P. Herzig, R. Dändliger, “Illumination light pipe using micro-optics as diffuser,” in Holographic and Diffractive Techniques, G. J. Dansmann, ed., Proc. SPIE2951, 146–155 (1996).

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