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Emerging Image Sensor Tech for FM

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04 August 2021

 

A new report from IDTechEx, “Emerging Image Sensor Technologies 2021-2031: Applications and Markets”, comprehensively explores the market for emerging image sensors, covering a diverse range of technologies that span from thin-film flexible photodetectors to event-based vision. 

Image sensing is an essential capability, utilised across multiple applications that range from webcams and smartphone cameras to autonomous vehicles and industrial inspection. The FM industry is reaching for new heights of technological integration and looking to adopt innovations like this. Despite a reluctance from some in the sector to engage with digital transformation, leading services and installations are employing the latest in smart tech for fit-outs. Image sensor technology upgrades have the potential to improve a multitude of monitoring faculties, such as security surveillance, or maintenance identification.

 

Motivation for Emerging Image Sensor Technologies

 

While conventional CMOS detectors for visible light – semiconductor devices that serve as “electronic eyes” – are well established and somewhat commoditised, at least for low-value applications, there is an extensive opportunity for more complex image sensing hardware that offer capabilities beyond simply acquiring red, green, and blue intensity values at each pixel. This largely stems from the ever-increasing adoption of machine vision, in which image analysis is performed by computational algorithms. Machine learning requires as much input data as possible to establish correlations that can facilitate object identification and classification, so acquiring optical information over different wavelength ranges, or with spectral resolution, for example, is highly advantageous.

Of course, emerging image sensor technologies offer many other benefits. This can include similar capabilities at a lower cost, increased dynamic range, improve temporal resolution, spatially variable sensitivity, global shutters at high resolution, reducing the unwanted influence of scattering, flexibility/conformity, and more.

 

Avenues of Development and Innovation

 

Emerging image sensor technologies within the IDTechEx report include:

 

  • Hybrid image sensors – Adding an additional light-absorbing layer on top of a CMOS read-out circuit is a hybrid approach that utilises either organic semiconductors or quantum dots to increase the spectral sensitivity into the short-wave infrared (SWIR) region. Currently dominated by expensive InGaAs sensors, this new technology promises a substantial price reduction and hence the adoption of SWIR imaging for new applications such as autonomous vehicles.
  • Extended-range silicon – Given the very high price of indium gallium arsenide (InGaAs) sensors, there is considerable motivation to develop much lower-cost alternatives that can detect light towards the lower end of the SWIR spectral region. Such SWIR sensors could then be employed in vehicles to provide better vision through fog and dust due to reduced scattering. 
  • Thin-film photodetectors – Detection of light over a large area, rather than at a single small detector, is highly desirable for acquiring biometric data and, if flexible, for imaging through the skin. Emerging approaches that utilise solution processable semiconductors offer a compelling way to produce large-area conformal photodetectors for applications such as under-display fingerprint detection.
     
  • Event-based vision – Autonomous vehicles, drones, and high-speed industrial applications require image sensing with a high temporal resolution. However, with conventional frame-based imaging, a high temporal resolution produces vast amounts of data that requires computationally intensive processing. Event-based vision is a new way of obtaining optical information that combines greater temporal resolution of rapidly changing image regions with much reduced data transfer and subsequent processing requirements.

 

In summary, the increasing adoption of machine vision provides a great opportunity for emerging image sensing technologies that offer capabilities beyond conventional CMOS sensors. This report offers a comprehensive overview of the market for emerging image sensor technologies, covering a multitude of applications that range from autonomous vehicles to industrial quality control.

Emerging Image Sensor Technologies 2021-2031: Applications and Markets”, outlines the current status and future application for a wide range of emerging image sensors. Also included are highly granular 10-year market forecasts by revenue and volume – split by technology and application – along with multiple application case studies and technological/commercial readiness assessments. The report also includes many company profiles based on interviews with early-stage and established companies.

 

Picture: a light graphic.

Article written by Bailey Sparkes | Published 04 August 2021

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