With the wide application of image sensors in various fields such as consumer, medical and industrial applications, the performance of image sensors and the corresponding solution requirements are also increasing. Recently, ams focused on the sensor field introduced its high-resolution global shutter image sensor CMV50000, providing higher performance sensors for the design and development of automatic optical inspection systems, machine vision applications and professional consumer video applications. Industrial and medical industry demand continues to grow As can be seen from Figure 1, the average annual compound growth rate of the sensor market is expected to be 30% between 2017 and 2021, of which the medical industry will grow by 13% and the industrial market will increase by 6%, as shown in Figure 1. Figure 1 Sensor Market and Growth Forecast in Various Fields In the medical industry, as the global population ages, the demand for medical diagnostics continues to grow, including medical endoscopy and medical imaging. In medical endoscopy, disposable endoscopy requires a low-cost, miniaturized solution; while medical imaging requires a clearer image with a minimal radiation dose and lower system cost. In the industrial field, with the introduction of Industry 4.0, the demand for image sensors in the industrial market is continuously increasing. This is mainly manifested in the following four aspects: 1) Increased demand for high-speed/high-resolution machine vision systems; 2) Automate growth with collaborative robots; 3) Accelerate the use of smart meters; 4) Increased demand for customized and off-the-shelf sensor interface solutions. Imaging and Optical Fusion Technology Trends With regard to the current application trends of imaging and sensing technologies, imaging has not only been used to capture images, but has also applied different combinations of sensing technologies including 3D sensing and spectral sensing. Among them, under the trend of machine vision and machine learning, gradually realize the mixed reality function by applying 3D sensors; in terms of general user interaction, the touch sensor was introduced ten years ago, and now we can see that it has gradually been replaced by face recognition. In the future, we will see more applications such as human eye tracking and gesture control. In addition, we will also use event triggers to capture images and data, and always send online data about the latest developments in the field. It is mainly used in smart homes, smart buildings and other applications that require intelligent processing, such as using cameras to capture images and identifying how many people are in the house. Ams aims at the current development trend of imaging and visual sensing technology, through the integration of imaging and optics, the development of 3D and hyperspectral image sensing technology to achieve differentiated applications. In the medical field, the application of ams to medical transmission includes 3D CT technology, low-cost CT technology, and low-cost X-ray technology that can achieve a clear image with a small radiation dose. In addition, the smallest NanEye solution for a single-use endoscope can also be used. Achieve smaller package size, smaller distortion rate and higher resolution. Figure 2 ams medical endoscope solution In the industrial field, ams has high-performance global shutter CMOS imaging solutions, including high-speed machine vision and inspection, and the CMV50000 highlighted here is the latest solution for this. CMV50000 performance analysis The CMV50000 is a 35mm optical size image sensor with a resolution of 7920 x 6002 effective pixels, a pixel size of 4.6μm, and a patented 8T pixel structure of ams. The structure has advanced noise reduction and excellent electronic shutter efficiency. Due to the use of a global shutter instead of a rolling shutter, the sensor captures fast-moving object images without distortion or motion artifacts. Figure 3 CMV50000 sensor The CMV50000 offers a high-resolution 48 megapixel global shutter CMOS image sensor. It enables camera manufacturers that require UHD resolution applications to use CMOS image sensors with comparable performance instead of CCD sensors. Compared to CCD sensors, CMOS image sensors are easier to integrate in camera designs, with higher frame rates and lower power consumption. With a frame rate of 30 fps at 12-bit full resolution, the CMV50000 is ideally suited for use in high-speed machine vision systems, such as automated optical inspection (AOI) equipment used in liquid crystal display plants. In addition, it is also suitable for television broadcasting equipment and video cameras. The CMV50000 has a serial peripheral interface for parameter configuration and software control, and 22 LVDS channels for image data output. Each channel has a bandwidth of up to 830 Mbps. The on-chip PLL only needs to input a clock signal to generate all the internal clock signals. Stephane Curral, senior vice president and general manager of Ams Image Sensor Solutions Division (ISS), said that the CMV50000 has 48 million pixels and supports 30 fps at 8K resolution. The solution's low noise, high frame rate, and high dynamic range make it ideal for automated optical inspection systems, machine vision applications, and professional consumer video applications. AI: Machine Learning Combined with 3D Images Speaking about AI and machine learning, Stephane Curral pointed out that ams is investing heavily in software solutions. When the image needs to be read out, the 3D image needs to have a depth-related data. This data must be processed using machine learning, which is efficient. Among them, machine learning and 3D images should be combined to work better. In this 3D imaging field, VCSELs can capture the 940 nm spectrum due to the need for high sensitivity to near-infrared light, such as lasers. In addition, BSI back-illumination technology is also used in 3D imaging. Therefore, ams's global shutter technology is quite promising. Many companies say that they have a lot of related IP, but these IPs are actually related to the charge area. The technical matching of the IP and BSI in the charge area is not very good. Ams acquired the patented technology through the acquisition of CMOSIS, which enabled them to have unique advantages in this regard. Of course, BSI will further develop the stacking technology in the future, and at the same time, it can also put more wafers on the ams original sensor to enhance the data processing capability of the sensor, making the logic processing more efficient and faster. Ams is committed to providing differentiated solutions Stephane Curral said that ams has a variety of differentiated products in the fields of optics, imaging, environment, and audio. Among them, active noise reduction technology covers 80% to 90% of headset manufacturers in the market. In addition, ams also has a variety of advanced sensor technologies including pressure sensors, gas sensors, environmental sensors, temperature and humidity sensors, and even future particle sensors. In terms of image sensors, ams has strengthened its capabilities in CMOS, 3D and optical sensing by acquiring CMOSIS and Heplagon, two companies focused on sensor technology, to provide the industry with richer differentiated solutions.
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