| 
      
        | Company | 3D Scope | Function |  
        | Olympus | Flexible type 10 mm | HD system    Articulating scope |  
        | Shinko Optical | 0, 30 degrees    rigid type 5 mm, 10mm | 3CCCD HD system    Giro function |  
        | KARL STORZ | 0, 30 degrees    rigid type 10 mm | HD system |  
        | Viking Systems | 0, 30 degrees    rigid type 10 mm | HD system |  |