The design and characterisation of an optical VLSI processor for real time centroid detection

Boon Hean Pui, B. Hayes-Gill, M. Clark, Michael Geoffrey Somekh, C. See, J. F. Piéri, S. Morgan, A. Ng

Research output: Journal article publicationConference articleAcademic researchpeer-review

3 Citations (Scopus)


The integration of photo-detectors onto a standard CMOS integrated circuit is presented. This device provides the optical front end for a real time centroid detection system to be used as part of a larger system for implementing a Shack-Hartmann wavefront sensor. A hardware emulation system containing a Field Programmable Gate Array is used to prototype suitable algorithms prior to IC fabrication. Data is presented on the performance of photodetectors and the ability to extract in real time a centroid coordinate.
Original languageEnglish
Pages (from-to)73-80
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Jan 2001
Externally publishedYes
EventDesign, Test, Integration, and Packaging of MEMS/MOEMS 2001 - Cannes, France
Duration: 25 Apr 200127 Apr 2001


  • Active pixel
  • Centroid detection
  • FPGA
  • Integrated detector
  • Photodiodes
  • Wavefront sensor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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