Thermal imaging & vision systems
TOP TRENDS IN INDUSTRIAL CAMERAS AND OPTICS
Faster and higher-resolution image sensors, interfaces that support ever increasing bandwidths, simpler integration, miniaturisation and high on-board processing power are driving innovation in machine and embedded vision applications. Paul Wilson, managing director of Scorpion Vision, charts the current trends in cameras and components.
ULTRA HIGH RESOLUTION IMAGE SENSORS
Image sensor megapixel counts are continuing to climb, enabling industrial cameras to capture more picture detail. This not only means that microscopic defects can be detected, but also that a single camera can cover a larger area. Applications that have historically required multiple cameras may be carried out using just one high resolution camera, introducing huge potential for cost savings through reduced complexity, processing, management and capital outlay. Using a single camera eliminates the need to stitch together multiple images - driving performance improvements by shortening image processing time.
LARGER LENSES
The bigger the sensor, the larger the pixel area and the better the image quality…higher resolution sensors go hand in glove with larger lenses if a ‘tunnel effect’ is to be avoided. This is a major consideration when designing machine vision systems, as c-mount lenses are designed for sensors of up to a little more than one inch - anything bigger and a large diameter aperture lens is needed.
MICRO LENSES
At the opposite end of the lens size spectrum there is a surge in demand for M12 miniature lenses for use in embedded cameras, drones, robotics and autonomous vehicles. One of the reasons for this rise in popularity is that the quality of these lenses has improved dramatically in recent years, enabling them to be deployed in applications that were previously the preserve of c-mount lenses. Miniature lenses can be now incorporated into machine vision cameras, resulting in highly compact systems. This is particularly advantageous where space is at a premium and there is a cost benefit.
70 April 2023 Instrumentation Monthly
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