Cmos Light Field Image Sensor Building Block For Detection Of Multicolor Led Blink Sequence From Heterogeneous Locations

• doi: 10.1109/JSEN.2018.2886599
• title: CMOS Light Field Image Sensor Building Block for Detection of Multicolor LED Blink Sequence From Heterogeneous Locations
• publisher: IEEE
• isbn:
• issn: 2379-9153
• rank: 1785
• access_type: LOCKED
• content_type: Journals
• abstract: A light field image sensor is fabricated on a standard complementary metal-oxide-semiconductor (CMOS) process. The sensor uses two grating layers of various layer-tolayer distances to take advantage of Talbot effect. The horizontal placement of the upper grating relative to the lower one has three types of configurations. By shifting the upper grating to the left or right or aligned position relative to the lower grating, light incident from left, right, and center can be differentiated. Furthermore, color selectivity is analyzed by varying grating slit spacing to favor a particular color's wavelength to reach Talbot depth. We designed photodiodes each having area of 14 × 15 um2. We used a 180-nm five-metal CMOS process and achieved an angle differentiation accuracy error within 1.8° for the direct incidence on aligned configuration and within 3.6° of the expected angle for the leftand right-shifted configurations. In addition, we experimented with applying various wavelengths of light even to sensor structures favoring other wavelengths to analyze their effects. Combining these sensor characteristics, we show that red, green, and blue lights, clustered together at three different locations, can be recognized by a set of light field sensors. The sensor set can differentiate 6 different combinations of 3 different color blink sequences per cluster location, thus totaling 18 types of spatial temporal signals. Moreover, repeated measurements showed good immunity to noise. The standard deviation of the measured results between each repetition was less than 5 mV.
• article_number: 8574970
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8574970
• html_url: https://ieeexplore.ieee.org/document/8574970/
• abstract_url: https://ieeexplore.ieee.org/document/8574970/
• publication_title: IEEE Sensors Journal
• conference_location:
• conference_dates:
• publication_number: 7361
• is_number: 8662729
• publication_year: 2019
• publication_date: 1 April1, 2019
• start_page: 2525
• end_page: 2532
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 356
• insert_date: 20181213
• index_terms:
  • ieee_terms:
    • Gratings
    • Metals
    • Photodiodes
    • Logic gates
    • Image sensors
    • Diffraction gratings
  • author_terms:
    • CMOS image sensor
    • incident light angle detection
    • light wavelength detection
    • spatial-temporal signal detection
    • angle sensitive pixels
    • parallel optical communication
    • parallel chip to chip interface
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Light Field
    • Multicolor Light-emitting Diodes
    • Multicolor Light Emitting Diodes
    • Photodiode
    • Blue Light
    • Wavelength Of Light
    • Wavelengths Of Light
    • Photodetector
    • Red Light
    • Green Light
    • Metal Oxide Semiconductor
    • Metal-oxide-semiconductor
    • Metal-oxide Semiconductor
    • Light Images
    • Set Of Sensors
    • Light Source
    • Light Intensity
    • Incident Angle
    • Lower Layer
    • Light Signal
    • Traffic Signal
    • Codeword
    • Incident Wavelength
    • Incident Wavelengths
    • Range Of Incident Angles
    • Readout Circuit
    • Analog Voltage
    • Angle Of Light
    • Diffraction Grating
    • Diffraction Orders
    • P-n Junction
    • Wavelength Of The Incident Light
    • Sensor Configuration
    • Wooden Board
• authors:
  • Author Name: Wei Chao
    Affiliation: Department of Electronic Engineering, Kyung Hee University, Yongin, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37085630941
    ID: 37085630941
    Order: 1
    Author Affiliations:
    • Department of Electronic Engineering, Kyung Hee University, Yongin, South Korea
  • Author Name: Vivek Soni
    Affiliation: Department of Electronic Engineering, Kyung Hee University, Yongin, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37086701022
    ID: 37086701022
    Order: 2
    Author Affiliations:
    • Department of Electronic Engineering, Kyung Hee University, Yongin, South Korea
  • Author Name: Sang Hoon Hong
    Affiliation: Department of Electronic Engineering, Kyung Hee University, Yongin, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37597658800
    ID: 37597658800
    Order: 3
    Author Affiliations:
    • Department of Electronic Engineering, Kyung Hee University, Yongin, South Korea

Image Sensor

• sensor_type: CMOS
• resolution: not specified
• dynamic_range: not specified
• pixel_size: 14 x 15 µm
• dark_current: not specified

Optical Data

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

Performance Metrics

• noise: standard deviation less than 5 mV in measurements

Applications & Benefits

• cell_imaging: 2D color light sequence communication
• benefits: Ability to distinguish colored light signals from multiple locations, reducing noise impact.

Supporting Organizations

• supported_by: National Research Foundation of Korea

Manuscript Details

• publication_date: 1 April1, 2019

Relevancy Score

• score: 9
• missing_fields:
  • resolution
  • dynamic_range
  • frame_rate
  • signal_to_noise_ratio
  • sensitivity
  • aperture
  • focal_length
  • field_of_view
  • distortion
  • power_consumption
  • readout speed
  • noise sources

Processed JSON Filename

request_29f6c855-a9a9-4f0c-b2da-ad18b23de3df-cmos_light_field_image_sensor_building_block_for_detection_of_multicolor_led_blink_sequence_from_heterogeneous_locations.json