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The contaminant detection process can be automated more easily with optimal multi-spectral cameras. Discover how the image sensor manufacturer SSS is working to enable this capability.

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Taha, Bakr Ahmed, Norazida Ali, Nurfarhana Mohamad Sapiee, Mahmoud Muhanad Fadhel, Ros Maria Mat Yeh, Nur Nadia Bachok, Yousif Al Mashhadany, and Norhana Arsad. 2021. "Comprehensive Review Tapered Optical Fiber Configurations for Sensing Application: Trend and Challenges" Biosensors 11, no. 8: 253. https://doi.org/10.3390/bios11080253

HCG mode amplifies the signal immediately after light is converted into an electrical signal, at a stage when there is still low noise, thereby reducing noise that occurs afterwards. This allows low-noise images to be obtained even in dark shooting environments, leading to improved recognition precision. In bright conditions where dynamic range is important, it is possible to switch to LCG mode. Dual-read rolling shutter (DRRS) function Furthermore, these Sony's image sensors are equipped with a DRRS function that allows shooting with reduced noise. This can obtain images with noise reduced to approximately 1/4 of the level that typically occurs without this function.When DRRS is on, the image sensor outputs a pair of interchangeable images*2 of two different types. One contains both the imaging signal and the noise components, and the other contains only the noise components. These two images can be synthesized on the camera side to achieve images that largely eliminate the noise components. *2) Because only one of the images contains the image signal, it does not cause artifacts, a phenomenon where the outline of a moving subject is blurred between the two images. These functions make it possible to achieve extremely low-noise images even with small pixel size of 3.45μm. zoom

Furthermore, these Sony's image sensors are equipped with a DRRS function that allows shooting with reduced noise. This can obtain images with noise reduced to approximately 1/4 of the level that typically occurs without this function.When DRRS is on, the image sensor outputs a pair of interchangeable images*2 of two different types. One contains both the imaging signal and the noise components, and the other contains only the noise components. These two images can be synthesized on the camera side to achieve images that largely eliminate the noise components.

We introduce the utilization of SWIR image sensors in firefighting activities with practical demonstration videos. SWIR image sensors can be expected to reduce poor visibility caused by smoke and help identify the location of fires.

Taha BA, Ali N, Sapiee NM, Fadhel MM, Mat Yeh RM, Bachok NN, Al Mashhadany Y, Arsad N. Comprehensive Review Tapered Optical Fiber Configurations for Sensing Application: Trend and Challenges. Biosensors. 2021; 11(8):253. https://doi.org/10.3390/bios11080253

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Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.

*1) Among industrial SWIR image sensors based on a compound semiconductor using InGaAs (indium gallium arsenide). According to research by Sony (as of November 2023).

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Taha, B.A.; Ali, N.; Sapiee, N.M.; Fadhel, M.M.; Mat Yeh, R.M.; Bachok, N.N.; Al Mashhadany, Y.; Arsad, N. Comprehensive Review Tapered Optical Fiber Configurations for Sensing Application: Trend and Challenges. Biosensors 2021, 11, 253. https://doi.org/10.3390/bios11080253

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The IMX992 and IMX993 have approximately 5.32 and 3.21 megapixels respectively, making them the highest-resolution SWIR image sensors in the industry.*1 To achieve this, Sony has used its original SenSWIR technology to develop a new small pixel size of 3.45 μm. The 5-megapixel-class resolution and cell-sized 3.45-μm pixel specifications are widely used in C-mount-sized general global shutter image sensors, these are the first industrial SWIR image sensors to achieve equivalent specifications.Through high-resolution photography, these sensors offer vivid imaging even of tiny subjects, greatly improving precision in inspection and measurement applications that use SWIR-range light. They can also expand the imaging area while maintaining the same resolution, which is expected to improve efficiency through one-time large-scale imaging.

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*1) Tj=15℃ *2) F8、1/30 second accumulation *3) λ=1200 nm *4) Operability means the percentage of pixels free of defects. *5) When DRRS is on, the maximum frame rate may differ from the values in the table above. TBD: Not yet determined as the product is still under development.

Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world. Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal.

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SenSWIR image sensors have generally used analog output, but Sony’s SWIR image sensors are compatible with digital output and boast functionality equivalent to industrial CMOS image sensors. Also, analog output has conventionally required camera-side functionality that is suitable for a digital conversion circuit or industrial machinery, but Sony’s SWIR image sensors incorporate these functions within the product. This reduces hours of required development work on the camera side and contributes to a more multifunctional camera.Furthermore, the IMX992 and IMX993 are compatible not only with the SLVS interface, like most industrial cameras, but also with the MIPI, improving flexibility in camera settings and parts selection.

Through interviews on the development of SWIR image sensors, we will approach the strength of SSS's development capabilities to create something that is not in the world.

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Abstract: Understanding environmental information is necessary for functions correlated with human activities to improve healthcare quality and reduce ecological risk. Tapered optical fibers reduce some limitations of such devices and can be considerably more responsive to fluorescence and absorption properties changes. Data have been collected from reliable sources such as Science Direct, IEEE Xplore, Scopus, Web of Science, PubMed, and Google Scholar. In this narrative review, we have summarized and analyzed eight classes of tapered-fiber forms: fiber Bragg grating (FBG), long-period fiber grating (LPFG), Mach–Zehnder interferometer (MZI), photonic crystals fiber (PCF), surface plasmonic resonance (SPR), multi-taper devices, fiber loop ring-down technology, and optical tweezers. We evaluated many issues to make an informed judgement about the viability of employing the best of these methods in optical sensors. The analysis of performance for tapered optical fibers depends on four mean parameters: taper length, sensitivity, wavelength scale, and waist diameter. Finally, we assess the most potent strategy that has the potential for medical and environmental applications. Keywords: tapered optical fiber; optical sensors; Bragg grating; microstructure; refractive index sensor

Click here for the overview page on our SWIR image sensors that use SenSWIR short-wavelength infrared image sensor technology.

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Both of these high-performance SWIR image sensors offer precision and meet a variety of needs in industrial inspection, identification, and measurement applications, helping to boost productivity.

SWIR (short-wavelength infrared) band light is increasingly used for inspection, measurement, and monitoring applications that aim to make the invisible world visible.

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Click here for product information on SXGA/VGA SWIR image sensors. IMX990 (1/2" 1.34MP), IMX991 (1/4" 0.34MP)

In addition to equivalent resolution, they also offer vivid imaging of clusters of remote buildings.SWIR imaging is not affected by fine airborne particles.

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IMX992 and IMX993 SWIR image sensors are equipped with Sony’s original SenSWIR™ technology to offer even higher resolution and higher performance than comparable sensors. The small pixel size of 3.45μm achieves high resolution even with their compact size. Noise reduction mode can be enabled as the environment requires, allowing for vivid imaging even of tiny objects. These sensors use digital output to achieve high functionality and, as they are compatible with both SLVS and MIPI interfaces, camera settings are simplified and excellent flexibility in parts selection is possible.

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Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive positive feedback from the reviewers.

*2) Because only one of the images contains the image signal, it does not cause artifacts, a phenomenon where the outline of a moving subject is blurred between the two images.

Just a single Sony's SWIR image sensor can perform imaging across a wide range of wavelengths, from the visible band to SWIR light (400 nm to 1700 nm). This means that inspections that used to require separate cameras for visible light and SWIR can now be performed with just a single camera, so these sensors can be expected to reduce system costs and improve throughput by achieving faster image processing.The IMX992 and IMX993 offer the higher sensitivity performance, which is a feature of Sony’s SWIR image sensors, and improve the sensitivity in the visible light and NIR ranges. As a result, they achieve uniform sensitivity across a wide range of bands from visible light to SWIR. These image sensors minimize quality variations when switching wavelengths, enabling higher reliability and recognition precision.

The IMX992 and IMX993 are equipped with shooting modes that can be selected according to each purpose. By selecting optimal mode, high-quality images with low noise can be obtained, regardless of the brightness or darkness of the environment. These sensors demonstrate their power in scientific measurement, outdoor observation, and other applications where image quality in low-light environments is important.