Toru Shikano

Title: Toru Shikano: Innovator in Lens Technology

Introduction

Toru Shikano is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of lens technology, holding a total of 2 patents. His work focuses on improving the functionality and efficiency of lens systems, particularly in the context of camera equipment.

Latest Patents

Shikano's latest patents include a travel-limit circuit having a direct current motor for a lens. This innovative circuit enhances the endurance of the motor while reducing rebound caused by inertia at travel extremities. The design incorporates a lens motor that drives zoom lens groups and features limit switches that detect when the lens group has reached its mechanical stoppers. Upon detection, the motor driving circuit activates a short break by short-circuiting the input terminals on the lens motor, effectively cutting current flow to prevent damage.

Another significant patent is for a concentric ND filter. This design features multi-layered circular ND filter elements that decrease in diameter stepwise toward the uppermost layer. The surrounding space between the transparent substrate and the central ND filter layer is filled with a transparent adhesive, enhancing the filter's performance and usability.

Career Highlights

Toru Shikano is currently employed at Asahi Seimitsu Kabushiki Kaisha, where he continues to innovate in lens technology. His work has garnered attention for its practical applications in various optical devices.

Collaborations

Shikano has collaborated with notable coworkers, including Masayuki Arai and Eijiroh Tada. Their combined expertise contributes to the advancement of lens technology and the development of new inventions.

Conclusion

Toru Shikano is a prominent figure in the field of lens technology, with a focus on enhancing the performance and reliability of optical systems. His innovative patents reflect his commitment to advancing technology in this area.