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This article introduces visualization examples using a high-speed camera for laser welding technology utilizing TRUMPF's fiber laser "TruFiber FD45." In laser welding, capturing phenomena that occur in extremely short time frames, such as the formation of the molten pool and metal spatter, is essential for achieving a high-quality welding process. By using NAC's high-speed camera, it is possible to observe fine phenomena during welding in slow-motion footage, which is difficult to capture with standard imaging. This can aid in evaluating welding quality and optimizing the process. Combining the latest laser technology with high-speed imaging supports further quality improvement and research and development in laser welding.

nac Image Technology introduced high-speed camera solutions for automotive testing and research and development at "Vehicle Tech Week North America 2026," held in Novi, Michigan, USA, from October 27 to 29, 2026. Nac's high-speed camera "MEMRECAM" series is capable of visualizing high-speed phenomena occurring in milliseconds and microseconds, such as automotive crash safety tests, airbag deployment, and the motion analysis of vehicles and various components. Furthermore, by combining with technologies such as 2D and 3D motion analysis, 6 degrees of freedom (6DOF) measurement, and digital image correlation (DIC), the captured footage can be utilized as quantitative measurement data. We support the advancement of testing and measurement through high-speed imaging, from automotive safety evaluations to material testing and combustion analysis.

nac Image Technology held the "AICE Expert Seminar 2026" at our facility. This seminar welcomed experts, researchers, engineers, and university representatives from the industry to introduce the latest high-speed imaging technologies used in automotive research and development. The presentations covered various technologies and application examples, including visualization of engine combustion, fuel injection and spray analysis, observation of flame propagation, high-speed imaging using borescopes, temperature measurement, and fluid visualization (PIV). Additionally, demonstrations using actual equipment were conducted, showcasing combustion imaging and spray visualization using UV light, high-magnification imaging with long working distance lenses, and synchronization of pulse lasers with high-speed cameras. Through technologies such as high frame rates, high resolution, high sensitivity, short exposure, precise synchronization, and quantitative analysis, NAC supports advanced visualization and measurement in automotive research and development as well as combustion analysis. We sincerely thank all participants for attending.

In a column by Nack Image Technology, a hands-on lesson taught by Professor Kazuhiro Kozuka, an emeritus professor at Aichi Institute of Technology, is introduced, focusing on the dangers of "smartphone use while walking" utilizing gaze measurement. When operating a smartphone while walking, a person may feel they are looking around, but in reality, they may not be fully aware of the necessary information. This article introduces efforts to visualize gaze movements and attention direction, which are often difficult to consciously recognize, through gaze measurement technology, and to consider the dangers lurking in "smartphone use while walking." Gaze measurement is an effective technology for understanding human behavior and cognitive characteristics. Its application is expected in various fields such as safety education and ergonomics.

In TIG welding, the flow of shielding gas that protects the weld area from the atmosphere plays a crucial role in ensuring stable welding quality. In this article, Dr. Reiji Tamaki from Daihen Corporation explains the physical and quantitative relationship between the flow of shielding gas and welding current in TIG welding. During welding, complex phenomena such as arcs and gas flows occur, which are difficult to grasp visually. Visualizing and quantitatively evaluating these phenomena contributes to a better understanding of the welding process and improvements in quality. Observing high-speed phenomena with high-speed cameras plays an important role in the research and development of welding technology and phenomenon analysis.