An Integrated Optical Transient Sensor

• doi: 10.1109/TCSII.2002.807270
• title: An integrated optical transient sensor
• publisher: IEEE
• isbn:
• issn: 1558-125X
• rank: 1589
• access_type: LOCKED
• content_type: Journals
• abstract: The implementation of a compact continuous-time optical transient sensor with commercial CMOS technology is presented. In its basic version, this sensor consists of a photodiode, five transistors and a capacitor. The proposed circuit produces several output signals in parallel. These include a sustained, logarithmically compressed measure of the incoming irradiance, half-wave rectified and thresholded contrast-encoding measures of positive and negative irradiance transients, and a signal that shows a combination of the sustained and the bidirectional transient response. The particular implementation reported in this work responds to abrupt irradiance changes with contrasts down to less than 1% for positive transients and 25% for negative transients. Circuit modifications leading to more symmetric contrast thresholds around 5% are also described. Due to their compactness these transient sensors are suitable for implementation in monolithic one- or two-dimensional imaging arrays. Such arrays may be used to sense local brightness changes of an image projected onto the circuit plane, which typically correspond to moving contours.
• article_number: 1174084
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1174084
• html_url: https://ieeexplore.ieee.org/document/1174084/
• abstract_url: https://ieeexplore.ieee.org/document/1174084/
• publication_title: IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing
• conference_location:
• conference_dates:
• publication_number: 82
• is_number: 26374
• publication_year: 2002
• publication_date: Sept. 2002
• start_page: 612
• end_page: 628
• citing_paper_count: 46
• citing_patent_count: 5
• download_count: 599
• insert_date: 20030129
• index_terms:
  • ieee_terms:
    • Optical sensors
    • Integrated optics
    • Sensor arrays
    • CMOS technology
    • Nonlinear optics
    • Integrated circuit technology
    • Capacitive sensors
    • Photodiodes
    • Capacitors
    • Integrated circuit measurements
  • dynamic_index_terms:
    • Logarithm
    • Log Transformed
    • Logarithmic Transformation
    • Output Signal
    • Transient Response
    • CMOS Technology
    • Changes In Radiation
    • Changes In Irradiance
    • Basic Version
    • Contrast Threshold
    • Image Processing
    • Feedback Loop
    • Time Constant
    • Fold Increase
    • Constant Current
    • Sustained Response
    • Linear Change
    • Parasitic Capacitance
    • Large Gain
    • Capacitive Coupling
    • AC-coupled
    • Electrostatic Coupling
    • Open Loop
    • Resistance Elements
    • Image Compression
    • Gain Stage
    • Basic Circuit
    • Transient Current
    • Ideal Circuit
    • Transient Voltage
    • Weak Inverse
    • Amplifier Output
    • Decay Time Constant
    • Finite Time
    • Additional Gain
• authors:
  • Author Name: J. Kramer
    Affiliation: Institute of Neuroinformatics, University of Zurich, ETH Zurich, Zurich, Switzerland
    Author URL: https://ieeexplore.ieee.org/author/37340309500
    ID: 37340309500
    Order: 1
    Author Affiliations:
    • Institute of Neuroinformatics, University of Zurich, ETH Zurich, Zurich, Switzerland

Image Sensor

• sensor_type: CMOS
• resolution: variable
• dynamic_range: not specified
• pixel_size: not specified
• dark_current: not specified

Optical Data

• focal_length: 8 mm
• aperture: not specified
• field_of_view: not specified
• distortion: not specified

Performance Metrics

Applications & Benefits

• cell_imaging: used for detecting local brightness changes
• benefits: enhancement of local brightness transients for image preprocessing and compression

Supporting Organizations

• supported_by: Swiss National Foundation under Research Grant 5002-57809/1

Manuscript Details

• publication_date: Sept. 2002

Relevancy Score

• score: 9
• missing_fields:
  • resolution
  • dynamic_range
  • pixel_size
  • dark_current
  • frame_rate
  • signal_to_noise_ratio
  • sensitivity
  • power_consumption
  • noise
  • aperture
  • field_of_view
  • distortion

Processed JSON Filename

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