With the case and fiber sheath made of PFA, Panasonic chemical/oil resistant fiber can be used with various types of chemical liquids. Since no metal components are used, there is no need to worry about metal contamination, even if the protective tube is damaged. It is ideal for use in applications such as semiconductor front-end equipment where a clean environment is required. A built-in lens achieves narrow-view detection with an aperture angle of 30 degrees. The protective tube features a bending radius of R30 mm R1.181 in, which improved the cable arrangement compared to previous (R40 mm R1.575 in) designs. A dedicated fiber cutter is included which is designed to cut the protective tube easily. The protective tube length can be adjusted as required, which helps to reduce installation labor cost.