This inventor holds 5 USPTO granted patents. Top assignee: Fuji Photo Optical Co., Ltd.. Active years: 2002-2005.
Location History:
- Omiya, JP (2002 - 2003)
- Saitama, JP (2005)
Company Filing History:
Years Active: 2002-2005
Title: The Innovations of Toshihisa Ishijima
Introduction
Toshihisa Ishijima is a notable inventor based in Omiya, Japan. He has made significant contributions to the field of optical technology, holding a total of 5 patents. His work primarily focuses on enhancing the accuracy and stability of optical devices.
Latest Patents
One of Ishijima's latest inventions is a laser range finder. This device features a sending portion that emits laser light to a target and a receiving portion that captures the reflected laser light. Both components are supported on gimbals along with erecting prisms of a binocular optical system. Their attitudes are controlled to secure them to an inertial system, effectively eliminating the influence of shake. This innovation allows for accurate aiming at distant targets and precise distance measurement.
Another significant patent is an image stabilizing apparatus. In this device, an actuator for a pivoting gimbal suspension is controlled by a feedback loop. The gain of the feedback loop, based on the angular position, is enhanced when the angular velocity reaches a first set value or higher. This enhancement continues until the angular velocity drops to a second set value or lower, automatically achieving a panning mode during pan/tilt operations. Additionally, the gain is enhanced when the angular velocity increases until a predetermined time has passed after initiating the pivoting control of the gimbal suspension, stabilizing its behavior.
Career Highlights
Toshihisa Ishijima is currently employed at Fuji Photo Optical Co., Ltd. His work at this esteemed company has allowed him to develop and refine his innovative technologies. His contributions have significantly impacted the optical industry, particularly in the areas of laser technology and image stabilization.
Collaborations
Ishijima has collaborated with notable coworkers, including Kouichi Nagata and Kenichi Takahashi. Their combined expertise has fostered an environment of innovation and creativity, leading to the development of advanced optical solutions.
Conclusion
Toshihisa Ishijima's contributions to optical technology through his patents and innovations have established him as a prominent figure in the field. His work continues to influence advancements in laser range finding and image stabilization, showcasing the importance of innovation in enhancing technological capabilities.