A Lightfield Image Sensor In 180 Nm Cmos

• doi: 10.1109/JSSC.2011.2164669
• title: A Light-Field Image Sensor in 180 nm CMOS
• publisher: IEEE
• isbn:
• issn: 1558-173X
• rank: 762
• access_type: LOCKED
• content_type: Journals
• abstract: This paper presents a CMOS image sensor which captures local incident angle and intensity information from the light it records. The 400×384 pixel array employs 7.5 μm angle-sensitive pixels, which use pairs of local diffraction gratings above a photodiode to detect incident angle. The gratings are implemented with the metal interconnect layers of CMOS manufacturing technology and therefore require no post-processing or external optics. Fabricated in a 180 nm mixed-mode CMOS process, the sensor requires only a single lens to create a light-field image. Using the information contained in a single image, we demonstrate range finding with 2.5 mm precision at 1 m and post-capture refocus on complex visual scenes.
• article_number: 6031780
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6031780
• html_url: https://ieeexplore.ieee.org/document/6031780/
• abstract_url: https://ieeexplore.ieee.org/document/6031780/
• publication_title: IEEE Journal of Solid-State Circuits
• conference_location:
• conference_dates:
• publication_number: 4
• is_number: 6109882
• publication_year: 2012
• publication_date: Jan. 2012
• start_page: 257
• end_page: 271
• citing_paper_count: 47
• citing_patent_count: 9
• download_count: 3407
• insert_date: 20110929
• index_terms:
  • ieee_terms:
    • Gratings
    • Diffraction gratings
    • Image sensors
    • Diffraction
    • Arrays
    • CMOS integrated circuits
    • Cameras
  • author_terms:
    • Angle-sensitive pixel
    • CMOS image sensor
    • computational imaging
    • light field
    • rangefinding
    • synthetic refocus
    • Talbot effect
    • 3D imaging
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Light Field
    • Light Field Images
    • Single Image
    • Incident Angle
    • Local Intensity
    • Local Volume
    • Intensity Information
    • Volume Of Information
    • Visual Scene
    • Diffraction Grating
    • Diffraction Orders
    • Incident Intensity
    • Pixel Array
    • Angle Information
    • Interconnecting Layer
    • Spatial Resolution
    • Wavelength Of Light
    • Image Intensity
    • Focal Plane
    • Back Focal Plane
    • Angle Range
    • Unfocused
    • Out Of Focus
    • Intensity Pattern
    • Individual Pixels
    • Depth Of Field
    • Angular Resolution
    • Output Pixel
    • Angular Response
    • Vertical Separation
    • Lens Aperture
    • Aperture Lenses
    • Complement Response
    • Finite-difference Time-domain
    • FDTD
    • Finite-difference Time-domain Method
    • Gain Stage
• authors:
  • Author Name: Albert Wang
    Affiliation: Cornell University, Ithaca, NY, USA
    Author URL: https://ieeexplore.ieee.org/author/37713168100
    ID: 37713168100
    Order: 1
    Author Affiliations:
    • Cornell University, Ithaca, NY, USA
  • Author Name: Alyosha Molnar
    Affiliation: Cornell University, Ithaca, NY, USA
    Author URL: https://ieeexplore.ieee.org/author/37282515600
    ID: 37282515600
    Order: 2
    Author Affiliations:
    • Cornell University, Ithaca, NY, USA

Image Sensor

• sensor_type: CMOS
• resolution: 400x384
• dynamic_range: Not specified
• pixel_size: 7.5 µm
• dark_current: Not specified

Optical Data

• focal_length: 50 mm
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• frame_rate: 200 fps
• signal_to_noise_ratio: 53.6 dB (8.6 ENOB)
• power_consumption: 80 mA at 1.8 V (approximately 144 mW)
• noise: 3 LSBs at 10-bit level

Applications & Benefits

• cell_imaging: The sensor allows for capturing local incident angle and intensity information, enabling applications such as computational refocus and range finding.
• benefits: Offers a rich description of light field information allowing for multifaceted imaging capabilities.

Supporting Organizations

• supported_by: None specified

Manuscript Details

• publication_date: Jan. 2012

Relevancy Score

• score: 10

Processed JSON Filename

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