Abstract

An illumination system using LED sources for pocket-size projectors is designed. Its color gamut is much larger than the sRGB standard. The maximum theoretical efficiency of this system is 29.98% by non-imaging theory-based calculations. To analyze the system model, 1.5 × 106 rays are traced by using the LightTools software. The total light flux that illuminates the digital micromirror device is 44 lm and the American National Standards Institute 13-point uniformity on the surface is 91.55%, −91.15% with a system efficiency of 28.3%. The calculations are in good agreement with the simulation results. The illumination system can be used for personal pocket-size projectors providing a 15-20 in. (38-51 cm) color display with the brightness comparable with a laptop.

© 2007 Optical Society of America

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  1. Chong-min Chang and Han-Ping D. Shieh, "Design of illumination and projection optics for projectors with single digital micromirror devices," Appl. Opt. 39, 3202-3208 (2000).
  2. S. Magarill, "Optical system for projection display," U.S. patent 5,552,922 (3 September 1996).
  3. R. C. Meyer, G. P. Deffner, A. L. Huang, and J. K. Masters, "Color temperature compensation for digital display system with color wheel," U.S. patent 5,668,572 (16 September 1997).
  4. Y. Narukawa, "White-Light LEDS," Opt. Photon. News 15, 24-29 (2004).
    [CrossRef]
  5. M. H. Keuper, G. Harbers, and S. Paolini, "GRB LED illuminator for pocket-sized projectors," in SID 2004 International Symposium Digest of Technical Papers (2004), pp. 943-945.
  6. www.lumileds.com.
  7. www.cadresearch.com.
  8. M. F. Bone, M. Francis, P. J. Menard, M. E. Stefanov, and Y. Ji, "Novel optical system design for reflective CMOS technology," in Projection Display V, M. H. Wu, ed., Proc. SPIE 3634, 80-86 (1999).
  9. Jing Qi-cheng and Jiao Shu-lan, Colorimetry (Science Press, 1979).
  10. R. Winston, "Nonimaging optics," Sci. Am. 264, 26-81 (1991).
  11. LightTools 3.3.3, Optical Research Associates, 3280 East Foothill Boulevard, Pasadena, Calif. 91107.
  12. L. Shapiro, "New ANSI/IEC standard for projectors," in Projection Display II, M. H. Wu, ed., Proc. SPIE 2650, 209-216 (1996).

2004 (1)

Y. Narukawa, "White-Light LEDS," Opt. Photon. News 15, 24-29 (2004).
[CrossRef]

2000 (1)

1999 (1)

M. F. Bone, M. Francis, P. J. Menard, M. E. Stefanov, and Y. Ji, "Novel optical system design for reflective CMOS technology," in Projection Display V, M. H. Wu, ed., Proc. SPIE 3634, 80-86 (1999).

1997 (1)

R. C. Meyer, G. P. Deffner, A. L. Huang, and J. K. Masters, "Color temperature compensation for digital display system with color wheel," U.S. patent 5,668,572 (16 September 1997).

1996 (2)

S. Magarill, "Optical system for projection display," U.S. patent 5,552,922 (3 September 1996).

L. Shapiro, "New ANSI/IEC standard for projectors," in Projection Display II, M. H. Wu, ed., Proc. SPIE 2650, 209-216 (1996).

1991 (1)

R. Winston, "Nonimaging optics," Sci. Am. 264, 26-81 (1991).

Bone, M. F.

M. F. Bone, M. Francis, P. J. Menard, M. E. Stefanov, and Y. Ji, "Novel optical system design for reflective CMOS technology," in Projection Display V, M. H. Wu, ed., Proc. SPIE 3634, 80-86 (1999).

Chang, Chong-min

Deffner, G. P.

R. C. Meyer, G. P. Deffner, A. L. Huang, and J. K. Masters, "Color temperature compensation for digital display system with color wheel," U.S. patent 5,668,572 (16 September 1997).

Francis, M.

M. F. Bone, M. Francis, P. J. Menard, M. E. Stefanov, and Y. Ji, "Novel optical system design for reflective CMOS technology," in Projection Display V, M. H. Wu, ed., Proc. SPIE 3634, 80-86 (1999).

Harbers, G.

M. H. Keuper, G. Harbers, and S. Paolini, "GRB LED illuminator for pocket-sized projectors," in SID 2004 International Symposium Digest of Technical Papers (2004), pp. 943-945.

Huang, A. L.

R. C. Meyer, G. P. Deffner, A. L. Huang, and J. K. Masters, "Color temperature compensation for digital display system with color wheel," U.S. patent 5,668,572 (16 September 1997).

Ji, Y.

M. F. Bone, M. Francis, P. J. Menard, M. E. Stefanov, and Y. Ji, "Novel optical system design for reflective CMOS technology," in Projection Display V, M. H. Wu, ed., Proc. SPIE 3634, 80-86 (1999).

Keuper, M. H.

M. H. Keuper, G. Harbers, and S. Paolini, "GRB LED illuminator for pocket-sized projectors," in SID 2004 International Symposium Digest of Technical Papers (2004), pp. 943-945.

Magarill, S.

S. Magarill, "Optical system for projection display," U.S. patent 5,552,922 (3 September 1996).

Masters, J. K.

R. C. Meyer, G. P. Deffner, A. L. Huang, and J. K. Masters, "Color temperature compensation for digital display system with color wheel," U.S. patent 5,668,572 (16 September 1997).

Menard, P. J.

M. F. Bone, M. Francis, P. J. Menard, M. E. Stefanov, and Y. Ji, "Novel optical system design for reflective CMOS technology," in Projection Display V, M. H. Wu, ed., Proc. SPIE 3634, 80-86 (1999).

Meyer, R. C.

R. C. Meyer, G. P. Deffner, A. L. Huang, and J. K. Masters, "Color temperature compensation for digital display system with color wheel," U.S. patent 5,668,572 (16 September 1997).

Narukawa, Y.

Y. Narukawa, "White-Light LEDS," Opt. Photon. News 15, 24-29 (2004).
[CrossRef]

Paolini, S.

M. H. Keuper, G. Harbers, and S. Paolini, "GRB LED illuminator for pocket-sized projectors," in SID 2004 International Symposium Digest of Technical Papers (2004), pp. 943-945.

Qi-cheng, Jing

Jing Qi-cheng and Jiao Shu-lan, Colorimetry (Science Press, 1979).

Shapiro, L.

L. Shapiro, "New ANSI/IEC standard for projectors," in Projection Display II, M. H. Wu, ed., Proc. SPIE 2650, 209-216 (1996).

Shieh, Han-Ping D.

Shu-lan, Jiao

Jing Qi-cheng and Jiao Shu-lan, Colorimetry (Science Press, 1979).

Stefanov, M. E.

M. F. Bone, M. Francis, P. J. Menard, M. E. Stefanov, and Y. Ji, "Novel optical system design for reflective CMOS technology," in Projection Display V, M. H. Wu, ed., Proc. SPIE 3634, 80-86 (1999).

Winston, R.

R. Winston, "Nonimaging optics," Sci. Am. 264, 26-81 (1991).

Appl. Opt. (1)

Opt. Photon. News (1)

Y. Narukawa, "White-Light LEDS," Opt. Photon. News 15, 24-29 (2004).
[CrossRef]

Sci. Am. (1)

R. Winston, "Nonimaging optics," Sci. Am. 264, 26-81 (1991).

Other (9)

LightTools 3.3.3, Optical Research Associates, 3280 East Foothill Boulevard, Pasadena, Calif. 91107.

L. Shapiro, "New ANSI/IEC standard for projectors," in Projection Display II, M. H. Wu, ed., Proc. SPIE 2650, 209-216 (1996).

S. Magarill, "Optical system for projection display," U.S. patent 5,552,922 (3 September 1996).

R. C. Meyer, G. P. Deffner, A. L. Huang, and J. K. Masters, "Color temperature compensation for digital display system with color wheel," U.S. patent 5,668,572 (16 September 1997).

M. H. Keuper, G. Harbers, and S. Paolini, "GRB LED illuminator for pocket-sized projectors," in SID 2004 International Symposium Digest of Technical Papers (2004), pp. 943-945.

www.lumileds.com.

www.cadresearch.com.

M. F. Bone, M. Francis, P. J. Menard, M. E. Stefanov, and Y. Ji, "Novel optical system design for reflective CMOS technology," in Projection Display V, M. H. Wu, ed., Proc. SPIE 3634, 80-86 (1999).

Jing Qi-cheng and Jiao Shu-lan, Colorimetry (Science Press, 1979).

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