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Intel Corporate VP Sagi Ben Moshe responsible for Realsense is leaving the company, according to his LinkedIn message:
MIPI Cleans Out Offensive Terminology
August 4, 2021 By Leave a Comment
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MIPI BoD directed its working groups to replace the offensive terms in MIPI documents. While the primary examples were “master” and “slave,” the groups were also asked to identify any other problematic words, such as “blacklist” and ”whitelist” for example, and work to replace them till the end of 2022.Although working groups can propose additional terms, the following replacements have been made available as options:
- For master: active, central, controller, default, host, initiator, leader, main, manager, parent, primary, principal, requester, supervisor
- For slave: auxiliary, child, client, completer, device, follower, peripheral, proxy, replica, responder, secondary, standby, subordinate, supporter, target, worker
Imec Spin-Off Spectricity Raises €14M Series B Funding
August 3, 2021 By Leave a Comment
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BusinessWire: An Imec spin-off Spectricity announces a €14M ($16M US) Series B funding round to accelerate the development and mass production of hyperspectral sensors and imagers for high-volume, low-cost applications from wearables to smartphones and IoT devices.
“I am pleased to see Spectricity growing and closing their second financing round, three years after its creation as imec spin-off,” said Luc Van den hove, President and CEO of imec. “Spectricity’s products are based on unique imec technology, and we will continue to maintain a strong link between our R&D and Spectricity’s development to enable a lasting competitive edge for Spectricity’s products.”
Following more than 10 years of research at imec, Spectricity was founded in 2018 by a team including research engineers of imec. CEO Vincent Mouret who joined the company last April and Chairman of the Board, Pieter Vorenkamp, ex-SVP of Broadcom, helped to productize the technology and scale the company.
57 Slides about Sony Stacked Sensors
August 3, 2021 By Leave a Comment
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Sony ISSCC 2021 Forum 5 presentation "Evolving Image Sensor Architecture through Stacking Devices" by Yusuke Oike is published on-line. A small subset is below:
Sony Officially Warns about CIS Laser Damage
August 2, 2021 By Leave a Comment
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Sony publishes an official warning of possibility of CIS damage from laser pointer and laser displays:
Assorted Videos: Omnivision, Aeye, HK University
August 1, 2021 By Leave a Comment
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Omnivision continues publishing a series of short interviews with its CEO Boyd Fowler:It turns out that Aeye automotive LiDAR happens to have has a bullet tracking capability with no HW modifications needed. Not sure what is the use cas for that:
Yang Chai from Hong Kong University presents "Near-/in-sensor computing for neuromorphic machine vision."
A Positive Effect of Image Sensor Noise
July 30, 2021 By Leave a Comment
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There is one positive consequence of image sensor noise - it helps to prevent forgeries. Université Paris-Saclay, France, and Universidad de la República, Uruguay, publish a paper "Noisesniffer: a Fully Automatic Image Forgery Detector Based on Noise Analysis" by Marina Gardella, Pablo Musé, Jean-Michel Morel, and Miguel Colom."Images undergo a complex processing chain from the moment light reaches the camera’s sensor until the final digital image is delivered. Each of these operations leave traces on the noise model which enable forgery detection through noise analysis. In this article we define a background stochastic model which makes it possible to detect local noise anomalies characterized by their number of false alarms. The proposed method is both automatic and blind, allowing quantitative and subjectivity-free detections. Results show that the proposed method outperforms the state of the art."
Quantum Dots Thesis
July 30, 2021 By Leave a Comment
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Universidad de Sevilla, Spain, publishes a BSc Thesis "Quantum dots: concept and application for image sensors" by Adri´an Romero Campelo."In the first part of this work (Chapter 2), a general outline of what quantum dots are and how they are manufactured (materials, techniques employed) will be provided. Besides, a complete description of the band structure of quantum dots, with an emphasis on their optoelectronic features, will be given too. In the second part of the thesis (Chapter 3), photodetection technologies are covered. After an introduction to the state of art of image sensors, the latest advances in quantum dot photodetection will be presented, considering their figures of merit and possible adaptation to current available production methods."
Another interesting recent thesis is from CEA-Leti and devoted to the modern microlens fabrication techniques, in French: "Étude d’une méthode de microfabrication 3D pour des applications de microlentilles d’imageurs" by Pierre Chevalier.
Samsung Paper on Under-Display Camera
July 29, 2021 By Leave a Comment
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EI publishes Samsung paper "Under Display Camera Image Recovery through Diffraction Compensation" by Jeongguk Lee, Yunseok Choi, Han-Sol Lee, Eundoo Heo, Dongpan Lim, Geunyoung Lee, and Seongwook Song presented at EI conference in January 2021."Under Display Camera(UDC) technology is being developed to eliminate camera holes and place cameras behind display panels according to full display trend in mobile phone. However, these camera systems cause attenuation and diffraction as light passes through the panel, which is inevitable to deteriorate the camera image. In particular, the deterioration of image quality due to diffraction and flares is serious, in this regard, this paper discusses techniques for restoring it. The diffraction compensation algorithm in this paper is aimed at real-time processing through HW implementation in the sensor for preview and video mode, and we've been able to use effective techniques to reduce computation by about 40 percent."
Samsung Paper on Under-Display Camera
July 29, 2021 By Leave a Comment
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EI publishes Samsung paper "Under Display Camera Image Recovery through Diffraction Compensation" by Jeongguk Lee, Yunseok Choi, Han-Sol Lee, Eundoo Heo, Dongpan Lim, Geunyoung Lee, and Seongwook Song presented at EI conference in January 2021."Under Display Camera(UDC) technology is being developed to eliminate camera holes and place cameras behind display panels according to full display trend in mobile phone. However, these camera systems cause attenuation and diffraction as light passes through the panel, which is inevitable to deteriorate the camera image. In particular, the deterioration of image quality due to diffraction and flares is serious, in this regard, this paper discusses techniques for restoring it. The diffraction compensation algorithm in this paper is aimed at real-time processing through HW implementation in the sensor for preview and video mode, and we've been able to use effective techniques to reduce computation by about 40 percent."
IDTechEx Forecasts Event-Based Sensor Sales of $20M in 10 Years from Now
July 29, 2021 By Leave a Comment
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PRNewswire: IDTechEx analyst Matt Dyson says: "IDTechEx forecast the market for the event-based vision sensor chips alone rising from its primarily pre-revenue status today to $20 million per year over the next 10 years. Furthermore, much of the value is likely to be captured by the software facilitated by event-based vision hardware, leading to a much greater total market."Regarding the potential markets and applications, IDTechEx thinks: "Event-based vision is highly relevant to recording rapidly changing situations that require immediate data processing (since the volume of data produced is much less). Applications that require high temporal resolution or high dynamic range are especially relevant.
IDTechEx, therefore, perceives the most promising applications as collision avoidance and navigation for autonomous vehicles/ADAS and unmanned aerial vehicles (drones). These markets have huge potential but will require substantial software development and data collection to fully interpret the event-based vision data. As such, IDTechEx believes that smaller markets with much more predictable input data, such as iris-tracking for AR/VR goggles and laser beam profiling, will see the earliest adoption of event-based vision."
IDTechEx Forecasts Event-Based Sensor Sales of $20M in 10 Years from Now
July 29, 2021 By Leave a Comment
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PRNewswire: IDTechEx analyst Matt Dyson says: "IDTechEx forecast the market for the event-based vision sensor chips alone rising from its primarily pre-revenue status today to $20 million per year over the next 10 years. Furthermore, much of the value is likely to be captured by the software facilitated by event-based vision hardware, leading to a much greater total market."Regarding the potential markets and applications, IDTechEx thinks: "Event-based vision is highly relevant to recording rapidly changing situations that require immediate data processing (since the volume of data produced is much less). Applications that require high temporal resolution or high dynamic range are especially relevant.
IDTechEx, therefore, perceives the most promising applications as collision avoidance and navigation for autonomous vehicles/ADAS and unmanned aerial vehicles (drones). These markets have huge potential but will require substantial software development and data collection to fully interpret the event-based vision data. As such, IDTechEx believes that smaller markets with much more predictable input data, such as iris-tracking for AR/VR goggles and laser beam profiling, will see the earliest adoption of event-based vision."
Ams Releases NanEyeM Module
July 28, 2021 By Leave a Comment
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ams OSRAM has first announced NanEyeM camera module for single-use medical endoscopy almost 3 years ago. Over the past time, the company "made a few packaging changes to the module for improved robustness." Now ams fully releases NanEyeM to production. The small dimensions of 1.0 mm x 1.0 mm x 2.7 mm allow the module to be used in the smallest of areas.
“Thanks to its space-saving size, the NanEyeM is made for use in areas of severe size restrictions, which includes single-use applications in bronchoscopy, urological endoscopy or endoscopic procedures in the kidney,” says Dina Aguiar, Marketing Manager at ams OSRAM. “The combination with the requisite high image quality makes the camera module a unique and attractive solution for the fast growing disposable endoscope market.”
The module uses a so-called "chip on tip" approach. Here, the image sensor and the optics are placed at the tip of the device (distal end). This results in significantly better image quality than when the camera module is located at the other, proximal end. The NanEyeM offers a fully integrated imaging module with a wafer level multi-element optics. It was specifically designed for optimal performance at close range distances. The lens combines a wide FoV with an extended depth of field (EDOF), reducing distortions and delivering a sharp and accurate image. The camera has LVDS interface to transmit over long lengths of cable without loss of signal integrity. NanEyeM boasts a frame rate of up to 49 fps, while maintaining low power consumption.
NanEyeM is the second generation of the NanEye2D from ams OSRAM. The camera module has been released to production and is available for ordering.
3D-Stacked SPAD Image Sensor
July 28, 2021 By Leave a Comment
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University of Edinburgh, University of Glasgow, and Heriot-Watt University publish a SPIE paper "High-speed vision with a 3D-stacked SPAD image sensor" by Istvan Gyongy, Germán Mora Martín, Alex Turpin, Alice Ruget, Abderrahim Halimi, Robert Henderson, and Jonathan Leach."We here consider an advanced direct ToF SPAD imager with a 3D-stacked structure, integrating significant photon processing. The device generates photon timing histograms in-pixel, resulting in a maximum throughput of 100's of giga photons per second. This advance enables 3D frames to be captured at rates in excess of 1000 frames per second, even under high ambient light levels. By exploiting the re-configurable nature of the sensor, higher resolution intensity (photon counting) data may be obtained in alternate frames, and depth upscaled accordingly. We present a compact SPAD camera based on the sensor, enabling high-speed object detection and classification in both indoor and outdoor environments. The results suggest a significant potential in applications requiring fast situational awareness."
ON Semi Announces 16MP Global Shutter Sensor for Machine Vision Applications
July 27, 2021 By Leave a Comment
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BusinessWire: ON Semiconductor expands its XGS series of CMOS sensors. The XGS 16000 is a 16MP global shutter sensor for factory automation applications including robotics and inspection systems. Consuming 1W at 65fps, the XGS 16000 is said to be one of the best in class for power consumption, among 29 x 29 mm sensors.
The XGS 16000 shares a common architecture and footprint with other XGS CMOS image sensors. This enables manufacturers to use a single camera design to develop products in different resolutions.
The XGS 16000 is designed in a unique 1:1 square aspect ratio, which helps maximize the image capture area within the optical circle of the camera lens and ensure optimal light sensitivity.
ON Semi offers color and mono versions of the XGS 16000 X-Cube and X-Celerator developer kits.
Sharp Image Sensor Lineup
July 27, 2021 By Leave a Comment
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2021 Sharp catalog reveals that its image sensor linup is still dominated by CCDs, although CMOS sensors section is expanding. Sharp CCDs are quite fast by CCD standards with 8MP one reaching 25fps frame rate:
e2v iToF Sensor Demos
July 26, 2021 By Leave a Comment
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Teledyne e2v publishes 3 video demos of its iToF Hydra3D sensor announced a year ago (1, 2, 3):
Photomultiplication in NIR Organic Diodes
July 26, 2021 By Leave a Comment
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Nature publishes a paper "Enhancing sub-bandgap external quantum efficiency by photomultiplication for narrowband organic near-infrared photodetectors" by Jonas Kublitski, Axel Fischer, Shen Xing, Lukasz Baisinger, Eva Bittrich, Donato Spoltore, Johannes Benduhn, Koen Vandewal, and Karl Leo from Technische Universität Dresden (Germany), Leibniz-Institut für Polymerforschung Dresden (Germany) and Hasselt University (Belgium)."Photomultiplication-type organic photodetectors have been shown to achieve high quantum efficiencies mainly in the visible range. Much less research has been focused on realizing near-infrared narrowband devices. Here, we demonstrate fully vacuum-processed narrow- and broadband photomultiplication-type organic photodetectors. Devices are based on enhanced hole injection leading to a maximum external quantum efficiency of almost 2000% at −10 V for the broadband device. The photomultiplicative effect is also observed in the charge-transfer state absorption region. By making use of an optical cavity device architecture, we enhance the charge-transfer response and demonstrate a wavelength tunable narrowband photomultiplication-type organic photodetector with external quantum efficiencies superior to those of pin-devices. The presented concept can further improve the performance of photodetectors based on the absorption of charge-transfer states, which were so far limited by the low external quantum efficiency provided by these devices."
FBK on SPAD IR Sensitivity Enhancement
July 25, 2021 By Leave a Comment
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FBK presents "NIR-sensitive single-photon devices (SiPM and SPADs in custom technologies), for industrial and automotive LIDAR applications" by Fabio Acerbi, G. Paternoster, A. Mazzi, A. Gola, and L. Ferrario:
Elmos iToF Presentation
July 24, 2021 By Leave a Comment
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Elmos publishes a slide deck "3D ToF sensor design and it‘s application in gesture and object recognition" by Sarah Blumenthal:
ST Presentation on Pixel-Level Stacking
July 23, 2021 By Leave a Comment
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ST presentation "Challenges and capabilities of 3D integration in CMOS imaging sensors" by Dominique Thomas, Jean Michailos, Krysten Rochereau, Joris Jourdon, and Sandrine Lhostis presents the company's achievements up to September 2019:
A (Wrong) Attempt to Improve Imaging
July 22, 2021 By Leave a Comment
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University of Glasgow and University of Edinburgh publish a paper "Noise characteristics with CMOS sensor array scaling" by Claudio Accarino, Valerio F. Annese, Boon Chong Cheah, Mohammed A. Al-Rawhania, Yash D. Shaha, James Beeley, Christos Giagkoulovitis, Srinjoy Mitra, David R.S.Cumming. The paper compares SNR of a large single sensor with an array of smaller sensors having the same combined area. The conclusion looks fairly strange:"In this paper we have compared the noise performance of a sensor system made using a single large sensor, versus the noise achieved when averaging the signal from an array of small independent sensors. Whilst the SNR of a smaller physical sensor is typically less than that of a single larger sensor, the properties of uncorrelated Gaussian noise are such that the overall performance of an array of small sensors is significantly better when the signal is averaged.
This elegant result suggests that there is merit in using sensor arrays, such as those that can be implemented in CMOS, even if the application only calls for a single measurement. Given the relatively low cost of CMOS and the wide availability of CMOS sensors, it is therefore beneficial to use arrays in any application where low noise or multiple parallel sensing are a priority."
More about Sony-TSMC Fab in Japan
July 22, 2021 By Leave a Comment
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NikkeiAsia, TaiwanNews: The planned TSMC fab in Kumamoto, on the island of Kyushu in western Japan, would go forward in two phases, according to Nikkei Asia. The board of TSMC is expected to decide on the investment in the current quarter.The plant is expected to start operation in 2023. Once both phases are complete, the new fab will produce about 40,000 wafers per month in 28nm process. The fab is expected to be mainly used to make image sensors for Sony, TSMC's largest Japanese customer. Nikkei has been told that TSMC is open to a collaboration that would give Sony more say in operating the plant and negotiating with the Japanese government.
ElectronicsWeekly presents another view on Sony-TSMC fab project: "Sony has a $7 billion+ revenue business in image sensors which makes the $2.5 billion cost of such a fab a reasonable proposition."
Bloomberg reports that Japan intends to revive its domestic chip design and production industry and reverse the current downward R&D trend:
Image Sensors at In-Person Autosens Brussels
July 21, 2021 By Leave a Comment
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Austosens Brussels is to be held in in-person (!!!) on September 15-16. The agenda has been published and includes a lot of image sensor related stuff:- Sensor technology and safety features to address the challenging needs for reliable and robust sensing/viewing systemsYuichi Motohasi, Automotive Image Sensor Applications Engineer, SonyIn this presentation, the key characteristics of the image sensors will be presented. Also, the state-of-the-art of functional safety and cybersecurity requirement to achieve reliable and robust sensing/viewing system will be discussed.
- Beyond the Visible: SWIR Enhanced Gated Depth Imaging
Ziv Livne, CBO, TriEye
We will introduce a new and exciting SWIR-based sensor modality which provides HD imaging and ranging information in all conditions (“SEDAR”). How it works, its main benefits, and why it is the future. We will then show experimental evidence of SEDAR superiority over sensors of other wavelengths. These include recordings in difficult conditions such as nighttime, fog, glare, dust, and more. Also, show depth map field results. - Automotive 2.1 µm High Dynamic Range Image SensorsSergey Velichko, Sr. Manager, ASD Technology and Product Strategy, ON Semiconductor
This work describes a first generation 8.3 Mega-Pixel (MP) 2.1 µm dual conversion gain (DCG) pixel image sensor developed and released to the market. The sensor has high dynamic range (HDR) up to 140 dB and cinematographic image quality. Non-bayer color filter arrays improve low light performance significantly for front and surround Advanced Driver Assistance System (ADAS) cameras. This enables transitioning from level 2 to level 3 autonomous driving (AD) and fulfilling challenging Euro NCAP requirements. - High Dynamic Range Backside Illuminated Voltage Mode Global Shutter CIS for in Cabin MonitoringBoyd Fowler, CTO, OmniVision TechnologiesAlthough global shutter operation is required to minimize motion artifacts in in-cabin monitoring, it forces large changes in the CIS architecture. Most global shutter CMOS image sensors available in the market today have larger pixels and lower dynamic range than rolling shutter image sensors. This adversely impacts their size/cost and performance under different lighting conditions. In this paper we describe the architecture and operation of backside illuminated voltage mode global shutter pixels. We also describe how the dynamic range of these pixels can be extended using either multiple integration times or LOFIC techniques. In addition, how backside illuminated voltage mode global shutter pixels can be scaled, enabling smaller more cost effective camera solutions and results from recent backside illumi