Location History:
- Koto-ku, JP (2002)
- Chiba, JP (1998 - 2014)
Company Filing History:
Years Active: 1998-2014
Title: Isamu Fujii: Innovator in Proximity Sensors and Light Receiving Circuits
Introduction
Isamu Fujii is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of sensor technology, particularly in the development of proximity sensors and light receiving circuits. With a total of 7 patents to his name, Fujii continues to push the boundaries of innovation in his field.
Latest Patents
Fujii's latest patents include a proximity sensor using a photosensor. This invention is designed to be user-friendly and energy-efficient. The proximity sensor utilizes a first photosensor to detect changes in ambient light caused by a finger approaching the sensor. A detection signal is then output based on this detection. The photosensor may consist of one or multiple PN junction elements connected in parallel.
Another significant patent is a light receiving circuit that detects changes in light intensity. This circuit features a compact and cost-effective input circuit with low current consumption. It includes a photoelectric conversion element that supplies current corresponding to the amount of incident light, an N-channel MOS transistor, and a control circuit that manages the gate voltage of the NMOS transistor. The control circuit outputs a control state output signal based on the delay amount of the gate voltage control.
Career Highlights
Isamu Fujii is currently employed at Seiko Instruments Inc., where he applies his expertise in sensor technology. His work has led to advancements that enhance the functionality and efficiency of various electronic devices.
Collaborations
Fujii has collaborated with notable coworkers such as Shinichi Idomukai and Yuji Hishiki. Their combined efforts contribute to the innovative projects at Seiko Instruments Inc.
Conclusion
Isamu Fujii's contributions to sensor technology exemplify the spirit of innovation. His patents reflect a commitment to creating efficient and effective solutions in the field. As he continues to develop new technologies, his work will undoubtedly influence the future of electronic devices.