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SMPTE Journal ( Volume: 106, Issue: 10, October 1997)
[ACTIVE]

Image Light Amplifier (ILA) Technology for Large-Screen Projection

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
SMPTE J
Volume
106, No. 10, pp. 710–717
Abstract
The paper describes the configuration and performance of Image Light Amplifier (ILA®) projectors. The ILA projector combines the advantages of a CRT-type projector with the high brightness capability of a xenon arc lamp projection light source. The projector has no defined pixel structure such as that found on liquid crystal display (LCD) and digital mirror device (DMD) projectors. Thus, dynamic video images with continuous edges and a highly realistic image quality are projected. The ILA projector will directly accept all standard video and computer formats from PAL/NTSC at 15.625/15.750 kHz horizontal scan frequencies to work station formats at 90 kHz. The enabling technology of the projector is the Hughes-JVC ILA modulator, which accepts a low-intensity image from a cathode ray tube (CRT) and replicates the image on a high-intensity white xenon arc light beam. The ILA uses solid-state thin film and liquid crystal technology to create a compact, rugged, image light modulator. The ILA projector incorporates three ILA modulators for the RGB channels. Projectors with up to 12,000 lumens output, a contrast ratio of 1000:1, and a resolution of2800 times 1500 TV lines are available. Two series of models, with one or three projection lenses, are available. Besides single-projector applications, such as electronic cinema, ILA projectors also are used in installations requiring high levels of raster shaping and the one-and two-dimensional seamless blending of multiple projector images.
Publication Date
1997-10-01
DOI
10.5594/J04509
ISSN
Print: 0036-1682
Link
https://doi.org/10.5594/J04509
Author(s)
W. P. BlehaHughes-JVC Technology Corp., Carlsbad, CA 92009.
Copyright
© 1997 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1. Beard T. D. Bleha W. P. Wong S. Y. , “AC Liquid-Crystal Light Valve,” Appl. Phys.Lett. 22 : 90 , 1973 . EXTERNAL
  • 2. Sterling R. D. ., “Video-Rate Liquid-Crystal Light-Valve Using an Amorphous Silicon Photoconductor,” 1990 SID Intl. Symposium Digest, of Tech. Papers/Vol. 21/SSN-0097–966x, p. 327 . EXTERNAL
  • 3. Lackner A. M. ., op cit, “Photostable Titled-Perpendicular Alignment of Liquid Crystals for Light Value,” p. 98 . EXTERNAL
  • 4. Bleha W. P. , “Image Light Amplifier Technology for High Definition Large Screen Projection Electronic Display,” Symposium Record of the 18th Intl. Television Symposium, Montreux, June, 1993 . EXTERNAL
  • 5. Hagerman J. ., “Single Lens Color 1LA . Projector,” Proc. of the 15th Intl. Display Research Conference, Oct. 1995 , p. 923 . EXTERNAL
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W. P. Bleha; Image Light Amplifier (ILA) Technology for Large-Screen Projection, SMPTE Journal ( Volume: 106, Issue: 10, October 1997); SMPTE, 1997. Available at https://doi.org/10.5594/J04509
Snippet:
W. P. Bleha; Image Light Amplifier (ILA) Technology for Large-Screen Projection, SMPTE Journal ( Volume: 106, Issue: 10, October 1997); SMPTE, 1997. Available at https://doi.org/10.5594/J04509

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W. P. Bleha; Image Light Amplifier (ILA) Technology for Large-Screen Projection, SMPTE Journal ( Volume: 106, Issue: 10, October 1997); SMPTE, 1997. Available at https://doi.org/10.5594/J04509
Snippet:
<span class="citation">W. P. Bleha; <cite>Image Light Amplifier (ILA) Technology for Large-Screen Projection</cite>, SMPTE Journal ( Volume: 106, Issue: 10, October 1997); SMPTE, 1997. Available at <a href="https://doi.org/10.5594/J04509" target="_blank" rel="noopener">https://doi.org/10.5594/J04509</a></span>

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W. P. Bleha; Image Light Amplifier (ILA) Technology for Large-Screen Projection, SMPTE Journal ( Volume: 106, Issue: 10, October 1997); SMPTE, 1997
doi: 10.5594/J04509
url: https://doi.org/10.5594/J04509
Snippet:
<li>
W. P. Bleha; <cite id="bib-10-5594-j04509">Image Light Amplifier (ILA) Technology for Large-Screen Projection</cite>, SMPTE Journal ( Volume: 106, Issue: 10, October 1997); SMPTE, 1997
<span class="doi">10.5594/J04509</span>
</li>