Variable Optical Filters For Enhanced Image Sensor Performance

• doi: 10.1109/AHS.2012.6268632
• title: Variable optical filters for enhanced image sensor performance
• publisher: IEEE
• isbn: 978-1-4673-1914-0
• issn:
• partnum: 12EX7410
• rank: 3951
• access_type: LOCKED
• content_type: Conferences
• abstract: Image sensors today are more and more used in all kinds of research applications like outer space or aviation. Especially in outer space applications it is essential to have reliable and good quality cameras that can dynamically adapt to different situations (Fig.2). In the scope of a Fraunhofer IIS internal research project we are trying to establish a new approach in sensor design, where pixelwise adjustable opticalfilters in front of the imagesensor allow for achieving significant improvements in terms of dynamic range, color space or spectrum. Liquidcrystal technology gives a lot of opportunities to realize arrays of filter cells, where every filter cell can be controlled individually. Similar panels are already used in LCD beamers. The pixel size is about 5μm and the process of manufacturing is compatible with CMOS image sensor manufacturing. With liquid crystal technology it is possible to design filters with very diverse characteristics. The amount of transmitted light can be controlled as well as the transmitted spectrum. Even polarization can be regulated. First experiments with custom liquid crystal filters and a simple demonstrator are promising and we expect to be able to extend the dynamic range of actual cameras from 60–70dB to more than 110dB by using this technology.
• article_number: 6268632
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6268632
• html_url: https://ieeexplore.ieee.org/document/6268632/
• abstract_url: https://ieeexplore.ieee.org/document/6268632/
• publication_title: 2012 NASA/ESA Conference on Adaptive Hardware and Systems (AHS)
• conference_location: Erlangen, Germany
• conference_dates: 25-28 June 2012
• publication_number: 6264152
• is_number: 6268630
• publication_year: 2012
• publication_date: 25-28 June 2012
• start_page: 70
• end_page: 76
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 171
• insert_date: 20120816
• index_terms:
  • ieee_terms:
    • Optical filters
    • Image sensors
    • Image color analysis
    • Adaptive filters
    • Liquid crystals
    • Cameras
    • Filtering theory
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Dynamic Range
    • Color Space
    • Color Components
    • Sensor Design
    • Outer Space
    • Video Camera
    • Test Setup
    • Test Apparatus
    • Indium Tin Oxide
    • High Dynamic Range
    • Adaptive Filter
    • Feature Filtering
    • Filtering Characteristics
    • Picture Quality
    • Impression Of Quality
    • Color Filter
    • Liquid Crystal Cell
    • Blue Pixels
    • Amount Of Pixels
    • Quantity Of Pixels
    • Hardware-in-the-loop
    • Hardware-in-loop
• isbn_formats:
  • format: Online ISBN, value: 978-1-4673-1914-0, isbnType: New-2005
  • format: Print ISBN, value: 978-1-4673-1915-7, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-4673-1916-4, isbnType: New-2005
• authors:
  • Author Name: Michael Schmid
    Affiliation: Department Electronic Imaging, Fraunhofer Institute of Integrated Circuits and Systems, Erlangen, Germany
    Author URL: https://ieeexplore.ieee.org/author/37087458655
    ID: 37087458655
    Order: 1
    Author Affiliations:
    • Department Electronic Imaging, Fraunhofer Institute of Integrated Circuits and Systems, Erlangen, Germany

Image Sensor

• sensor_type: CMOS
• resolution: 1920x1080
• dynamic_range: 108dB
• pixel_size: 5µm
• dark_current: Not specified

Optical Data

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

Performance Metrics

Applications & Benefits

• cell_imaging: Used in various applications such as outer space, smartphones, medical imaging, and automotive systems.
• benefits: Improves dynamic range, adaptability to different lighting situations, and the capability to handle complex imaging environments.

Supporting Organizations

• supported_by: Fraunhofer IIS

Manuscript Details

• publication_date: 25-28 June 2012

Relevancy Score

• score: 9
• missing_fields:
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • frame_rate
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed
  • power_consumption
  • noise

Processed JSON Filename

request_3c62d6d6-0422-4666-9456-50593ca2fb9d-variable_optical_filters_for_enhanced_image_sensor_performance.json