Accession Number:

ADA135014

Title:

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

Descriptive Note:

Semi-annual technical rept. 30 Sep 1977-30 Mar 1978

Corporate Author:

STANFORD UNIV CA

Personal Author(s):

Report Date:

1978-03-30

Pagination or Media Count:

11.0

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.

Subject Categories:

  • Acoustics
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE