Using cellophane to convert a liquid crystal display screen into a three dimensional display



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9. New Applications


Such a technique would have potential expansion into such fields as gaming, consumer goods, scientific and medical applications. Most recently, the 3D technique using a cellophane sheet was applied to a laparoscope in order to expand the limited viewing capability of this minimum invasive surgical device. A novel 3D laparoscope that can capture three-dimensional images during surgery was reported11. The principle is solely based on the manipulation of polarized light by a cellophane half waveplate rather than computer processing; hence, there is no time delay (real-time operation) and lesions are viewed in true color (important for diagnostics). 3D images are obtained with a single laparoscope. A unique feature of this 3D laparoscope is that it includes a virtual ruler to measure distances without physically touching affected areas. The structure is simple, sturdy, lightweight, and its diameter is no bigger than a standard 10 mm diameter laparoscope.



Fig. 13 System of the 3D laparoscope.



10. Conclusion


In conclusion, a novel method to convert either a 2D laptop computer screen or a camera phone screen into a 3D display was achieved by using plain ordinary cellophane wrapping paper as a half-waveplate. The case of single camera phone is reported in Ref (4). Applications to a 3D laparoscope are reported in Ref (11).

11. Acknowledgment


The author expresses his gratitude to Mrs. Mary Jean Giliberto for converting this paper into a Web-friendly format.

References


  1. Takanori Okoshi, Three-dimensional Imaging Techniques ( Academic Press, New York, 1976).

  2. Keigo Iizuka, Elements of Photonics (Wiley & Sons, New York, 2002) p. 350.

  3. K. Iizuka, "Cellophane as a half-waveplate and its use for converting a laptop computer screen into a three-dimensional display," Rev. Sci. Instrum. Vol. 74, 3636-3639 (2003).

  4. Keigo Iizuka, "Three dimensional camera phone," Applied Optics Vol. 43, 6285-6292 (2004)..

  5. Takehiro Izumi, ed., Fundamentals of 3D Vision (Ohm-sha, Tokyo, 1995) p. 64.

  6. J. Harrold, A. Jacobs, G. J. Woodgate, and D. Ezra, "Performance of a Convertible, 2D and 3D Parallax Barrier Autostereoscopic Display" in the Proceedings of the SID 20th International Display Research Conference (Palm Beach, Florida, September 2000).

  7. J. Cutting and P. Vishton, "Perceiving layout and knowing distance: the integration, relative potency and contextual use of different information about depth" in Perception of Space and Motion, W. Epstein and S. Rogers, eds. (Academic Press, New York,1995), pp. 69-117.

  8. E. Goldstein, Sensation and Perception, 3rd ed. (Wadsworth Publishing, Belmont, California, 1989).

  9. H. Sedgwick, "The Geometry of Spatial Layout in Pictorial Representation" in The Perception of Pictures, Vol.1, Alberti's Window: The Projective Model of Pictorial Information, M. Hagen, ed. (Academic Press, London 1980), pp. 34-90.

  10. J. D. Pfautz, "Depth perception in computer graphics," Technical Report number 546, University of Cambridge Computer Laboratory (ISSN 1476-2986, 2002).

  11. Keigo Iizuka,"3D laparoscope based on the manipulation of polarized light by a cellophone half waveplate" accepted by Applied Optics.
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