Single Chip Lenses for Ultrasonic Imaging. Effects of Transfer Efficiency on Lens Performance

Abstract

Several theoretical fundamental limits of single chip lenses using charge coupled device technology have been analyzed at Stanford University. This report concentrates the effects of incomplete transfer on lens performance. It is the conclusion of this report that while transfer efficiency may have a pronounced effect on system performance in other applications for the lens being considered: (1) the attenuation effects of transfer efficiency are deterministic and insignificant, (2) the lateral resolution and sidelobe response are to first order not modified, and (3) for moderate values of charge-transfer inefficiency the spatial shifting of the beamsteering angle is minor. Thus the Cascade Charged Coupled device lens is largely insensitive to the major limitation commonly encountered (transfer inefficiency) in charge coupled device applications today.

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Document Details

Document Type
Technical Report
Publication Date
Mar 30, 1978
Accession Number
ADA135014

Entities

People

  • James D. Meindl
  • Roger D. Melen

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Accuracy
  • Attenuation
  • Beam Steering
  • Celestial Brightness
  • Charge Coupled Devices
  • Charge Transfer
  • Delay Lines
  • Digital Images
  • Dispersion Relations
  • Efficiency
  • Errors
  • Frequency
  • Images
  • Sidelobes
  • Steering
  • Transducers

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Defense Acquisition Program Management
  • Optical Physics and Photonics.