日本CCS方形照明灯OPF-S77x77R-DF  OPF Series [Not available in Japan] High-accuracy contour extraction and foreign object detection of transparent and metal workpieces Product Lineup Features Applications Features [An industry first!] Narrow directivity angle type and diffuse type available The OPF Series is available as a narrow directivity angle type or as a diffuse type, allowing for selection of the directivity angle that best suits the target. Using the industry’s first prism sheet, the narrow directivity angle type allows for clear contour extraction with transparent workpieces and metal workpieces that cause glares, targets that were conventionally difficult to handle.