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FUJIFILM Optical Devices Europe GmbH news
Fujifilm announces the update of its popular DF/HF-HA-1B series lenses to ruggedised versions equipped with the unique Fujinon ‘Anti-shock and Vibration’ technology. Demand for quality optics in ruggedised versions continues to increase and the designated DF/HF-HA-1S is designed to meet that demand. The Fujinon HF-HA-1B series lenses are already in wide use across a variety of manufacturing environments, from automotive to electronics to pharmaceutical. These applications often have strict space constraints, making the external diameter of only 29.8 mm an attractive feature. Reliable performance The Fujinon HF-HA-1S upgrade provides vibration mitigation and shock absorption within the existing design, so the compact form factor remains. “A ruggedised Fujinon HF-HA-1S provides mechanical robustness for reliable performance in machine vision applications such as automated assembly, quality inspection, and industrial robots. It expands the base to where quality optics are required but where ruggedised design is also a significant factor, such as unmanned aerial vehicles and mobile applications”, says Nina Kürten, Sales Manager at Fujifilm. These lenses are compatible with image sensors up to 2/3’ in a broad selection of focal lengths (6, 9, 12.5, 16, 25, 35, 50, and 75mm). The optical performance of the upgraded series is identical to that of the Fujinon HF-HA-1B. The Fujinon HF-HA-1S will be available from January and will become the new standard version, eventually replacing the Fujinon HF-HA-1B as current stocks are depleted. Pricing will remain the same.
Industrial imaging systems are frequently subject to strong accelerations, shocks, and vibrations. This is especially true for mobile systems, like robot-guided 3D scanners, but also for fixed installations. Fujifilm has investigated the impact of shocks and vibrations on industrial fixed focal lenses via a dedicated test procedure. In many cases, the procedure leads to a significant reduction of the resolution and to a shift of the optical axis. However, the intensity of the effects depends heavily on the mechanical design of a camera lens—a widely underestimated aspect at the selection of fixed focal lenses. Modern robot arms are so powerful they can move major loads with a multiple of the gravitational acceleration (unit G, 1 G = 9.81 m/s²). Robot-guided machine vision systems, as they are used with welding and assembly robots as well as with 3D scanning stations, need to withstand such accelerations. Additionally, they are exposed to the vibrations at the tip of the robot arms just like camera-lens setups at large machines with rotating elements, e.g. in large offset printing systems.Fujifilm has developed a testing procedure for such lenses to measure their robustness against shocks and vibrations. Shock testing on machine vision cameras Most industrial machine vision solutions utilise industrial cameras and c-mount lenses with fixed focal length, which need to provide constant image quality irrespective of harsh conditions. Therefore, Fujifilm has developed a testing procedure for such lenses to measure their robustness against shocks and vibrations. At first, 10 G shocks impact the lenses from 6 different directions orthogonal to the optical axis. Next, a special vibrating table exposes the lenses to various sinusoidal vibrations according to IEC 60068-2-6 (up to 500 Hz and 100 m/s²). Finally, the shock test is repeated. The results show a shift in the optical axis of a conventional lens by up to 26 µm which corresponds to approx. 7 pixels at Sony Pregius sensors of the second generation. Their resolution power, measured using a contrast chart, deteriorates dramatically (see false colour rendering). For most machine vision applications, where fast accelerations and strong vibrations may occur, these lenses are not suitable. On the other hand, all lenses of the Fujinon HF-12M series, as well as the lenses of the HF-5M series with 6 and 50 mm focal length, withstand the shocks and vibrations showing a shift of the optical axis of just between 4 and 10 µm. This is enabled by the Fujinon Anti-Shock & Vibration design, an elastic and patent pending fixation of the internal lens arrangement.The Anti-Shock & Vibration design of the Fujinon lenses minimises the dependency on adhesives and ensures a constant performance and image quality in the long run. Towards high image quality At conventional camera objectives, the lenses are fixed with adhesives, which does not withstand shocks and vibrations plus it is sensitive to changes in humidity and temperature. The Anti-Shock & Vibration design of the Fujinon lenses, however, minimises the dependency on adhesives and ensures a constant performance and image quality in the long run. Beyond the optical format, resolution power, and focal length, developers of mechanically stressed imaging systems should consider the robustness of their camera objectives against shocks and vibrations. The following lenses are already equipped with the Fujinon Anti-Shock & Vibration design: HF-12M series for pixel sizes from 2.1 µm and sensors up to 1“ HF-5M series for pixel sizes from 3.45 µm and sensors up to 1.1 (focal length: 6 and 50 mm)
FUJIFILM Optical Devices Europe GmbH is responsible at its Kleve location for the sales, marketing and servicing of professional FUJINON lenses for TV and film productions, CCTV and Machine Vision as well as FUJINON Binoculars in Europe, the Middle East and in Africa. Security and industrail image processing For many years, FUJINON has been creating award-winning lenses. It develops and produces innovative, cutting-edge solutions for almost every application in the entertainment industry, security systems, and industrial image processing. The professional lenses for TV and film productions redefine the limits of high resolution, high contrast ratio, and high dynamic range. They create the pin-sharp TV pictures and help camera operator’s film stunning and powerful scenes. Precise machine vision lenses Thanks to the megapixel-zoom and megapixel-varifocal lenses, CCTV systems are featuring high resolution. The steadily growing portfolio of precise machine vision lenses for industrial image processing ensures minimal distortion for highest image quality, even under harsh conditions. FUJINON binoculars are known throughout the world. In particular, the FUJINON binoculars are very much appreciated by users in professional and semi-professional areas.