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Related Experiment Videos

Ultrathin cameras using annular folded optics.

Eric J Tremblay1, Ronald A Stack, Rick L Morrison

  • 1Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA 92093, USA. etremblay@ucsd.edu

Applied Optics
|January 19, 2007
PubMed
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We developed a novel reflective imaging technique for thin, high-resolution cameras. This multi-fold approach reduces size and weight while enhancing image quality for advanced optical systems.

Area of Science:

  • Optical Engineering
  • Camera Technology

Background:

  • Conventional cameras face limitations in balancing high resolution, large aperture, and compact size.
  • Miniature cameras often compromise on image quality and light-gathering capabilities.

Purpose of the Study:

  • To introduce a reflective multiple-fold imaging approach for creating thin, high-resolution, large-aperture cameras.
  • To analyze the properties, design, fabricate, and test a prototype based on this novel approach.

Main Methods:

  • Development of a reflective multiple-fold optical path.
  • Design and fabrication of an eightfold prototype camera.
  • Characterization of the prototype's optical performance.

Main Results:

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  • Demonstrated a significantly reduced camera thickness.
  • Achieved high resolution and a large effective aperture within a compact form factor.
  • An eightfold prototype camera with 35 mm focal length, 0.7 NA, and 27 mm effective aperture was realized within 5 mm thickness.

    • Conclusions:

    • The reflective multiple-fold approach enables the creation of ultra-thin, high-performance cameras.
    • This technology offers advantages in reduced bulk and weight compared to traditional systems.
    • Potential applications in space-constrained or weight-sensitive imaging systems.