Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Laser Doppler blood flow complementary metal oxide semiconductor imaging sensor with analog on-chip processing

Not Accessible

Your library or personal account may give you access

Abstract

A 4×4 pixel array with analog on-chip processing has been fabricated within a 0.35μm complementary metal oxide semiconductor process as a prototype sensor for laser Doppler blood flow imaging. At each pixel the bandpass and frequency weighted filters necessary for processing laser Doppler blood flow signals have been designed and fabricated. Because of the space constraints of implementing an accurate ω0.5 filter at the pixel level, this has been approximated using the “roll off” of a high-pass filter with a cutoff frequency set at 10kHz. The sensor has been characterized using a modulated laser source. Fixed pattern noise is present that is demonstrated to be repeatable across the array and can be calibrated. Preliminary blood flow results on a finger before and after occlusion demonstrate that the sensor array provides the potential for a system that can be scaled to a larger number of pixels for blood flow imaging.

© 2008 Optical Society of America

Full Article  |  PDF Article
More Like This
Laser Doppler perfusion imaging with a complimentary metal oxide semiconductor image sensor

Alexander Serov, Wiendelt Steenbergen, and Frits de Mul
Opt. Lett. 27(5) 300-302 (2002)

Holographic laser Doppler imaging of microvascular blood flow

C. Magnain, A. Castel, T. Boucneau, M. Simonutti, I. Ferezou, A. Rancillac, T. Vitalis, J. A. Sahel, M. Paques, and M. Atlan
J. Opt. Soc. Am. A 31(12) 2723-2735 (2014)

Laser Doppler field sensor for high resolution flow velocity imaging without camera

Andreas Voigt, Christian Bayer, Katsuaki Shirai, Lars Büttner, and Jürgen Czarske
Appl. Opt. 47(27) 5028-5040 (2008)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved