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Performance scaling in flat imagers.

Michael W Haney1

  • 1Department of Electrical and Computer Engineering, University of Delaware, Newark 19716, USA. haney@ee.udel.edu

Applied Optics
|April 28, 2006
PubMed
Summary

Flat cameras require significant physical size and sampling to match conventional imaging performance. This study analyzes performance scaling for thin imagers, considering optical constraints and aspect ratios.

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Area of Science:

  • Optical engineering
  • Image sensor technology

Background:

  • Low-profile imaging sensors present unique geometric and sensitivity constraints.
  • Evaluating performance scaling in flat-form-factor cameras is crucial for design optimization.

Purpose of the Study:

  • Introduce a performance scaling formulation for flat-form-factor cameras.
  • Estimate performance cost scaling based on optical aspect ratio in thin imagers.

Main Methods:

  • Developed a capacity metric to analyze performance cost scaling.
  • Considered two classes of flat imaging sensors: annular telescope folding and spatial multiplexing arrays.
  • Focused on optical signal collection level for computation-independent comparisons.

Main Results:

  • Thin imagers face substantial physical size and sampling requirements.
  • Achieving parity with conventional cameras in field of view, resolution, dynamic range, and sensitivity is challenging.
  • Performance scaling is directly influenced by the width-to-height aspect ratio of the optics.

Conclusions:

  • Flat-form-factor cameras incur significant trade-offs to achieve comparable performance to conventional designs.
  • Future research should focus on mitigating these scaling costs for thin imager applications.
  • The proposed formulation provides a basis for comparing different thin imager architectures.

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