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Proceedings Article

Laser Digital Cinema

[+] Author Affiliations
Eric B. Takeuchi, Graham W. Flint, Robert Bergstedt, Paul J. Solone

Photera Technologies, Inc. (USA)

Dicky Lee, Peter F. Moulton

Q-Peak, Inc. (USA)

Proc. SPIE 4294, Projection Displays VII, 28 (March 30, 2001); doi:10.1117/12.420785
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From Conference Volume 4294

  • Projection Displays VII
  • Ming H. Wu
  • San Jose, CA | January 20, 2001


Electronic cinema projectors are being developed that use a digital micromirror device (DMDTM) to produce the image. Photera Technologies has developed a new architecture that produces truly digital imagery using discrete pulse trains of red, green, and blue light in combination with a DMDTM where in the number of pulses that are delivered to the screen during a given frame can be defined in a purely digital fashion. To achieve this, a pulsed RGB laser technology pioneered by Q-Peak is combined with a novel projection architecture that we refer to as Laser Digital CameraTM. This architecture provides imagery wherein, during the time interval of each frame, individual pixels on the screen receive between zero and 255 discrete pulses of each color; a circumstance which yields 24-bit color. Greater color depth, or increased frame rate is achievable by increasing the pulse rate of the laser. Additionally, in the context of multi-screen theaters, a similar architecture permits our synchronously pulsed RGB source to simultaneously power three screens in a color sequential manner; thereby providing an efficient use of photons, together with the simplifications which derive from using a single DMDTM chip in each projector.

© (2001) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Eric B. Takeuchi ; Graham W. Flint ; Robert Bergstedt ; Paul J. Solone ; Dicky Lee, et al.
"Laser Digital Cinema", Proc. SPIE 4294, Projection Displays VII, 28 (March 30, 2001); doi:10.1117/12.420785; http://dx.doi.org/10.1117/12.420785

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