Koji Tsutsumi

Title: Innovations by Koji Tsutsumi

Introduction

Koji Tsutsumi is a notable inventor based in Kobe, Japan. He has made significant contributions to the field of object sensor systems, particularly for automatic doors. With a total of three patents to his name, Tsutsumi's work showcases his expertise and innovative spirit.

Latest Patents

One of Tsutsumi's latest patents is an object sensor system for automatic swing doors. This system includes swing-side and approach-side sensors, each equipped with light-emitters and light-receivers mounted on the swing door. The light-emitters project light toward the floor, while the light-receivers detect the reflected light, creating a rectangular object sensing zone. This zone is designed to be wider than the door itself, ensuring effective detection of objects. The sensing zone consists of a main area closer to the door and an auxiliary area that is disabled when the door is in motion.

Another patent by Tsutsumi is an object sensor system for doors. In this design, a light-emitter projects light onto the floor near a door, establishing a sensing area. A plano-convex condenser lens focuses the emitted light, while a plano-convex light-receiving lens captures the reflected light. The light-receiver then processes this focused light, allowing for accurate object detection.

Career Highlights

Koji Tsutsumi is currently employed at Nabco Limited, where he continues to develop innovative solutions in the field of sensor technology. His work has been instrumental in enhancing the functionality and safety of automatic doors.

Collaborations

Tsutsumi collaborates with talented individuals such as Ye Zengguang and Masahiro Sai, contributing to a dynamic team focused on advancing sensor technology.

Conclusion

Koji Tsutsumi's contributions to the field of object sensor systems demonstrate his innovative approach and commitment to improving automatic door technology. His patents reflect a deep understanding of sensor mechanics and their practical applications.