Company Filing History:
1 out of 180 
1 out of 11 
1 out of 25,560 
Years Active: 1982-1987
Title: Yasumasa Ohba: Innovator in Optical Systems
Introduction
Yasumasa Ohba is a notable inventor based in Numazu, Japan. He has made significant contributions to the field of optical systems, particularly in copying machines. With a total of 3 patents, his work has advanced the technology used in these devices.
Latest Patents
One of his latest patents is a method of controlling a stop position of an optical system in a copying machine. This invention involves an optical system that is movable by a motor, which operates in both a feed direction and a return direction. The optical system is returned to a predetermined home position at a speed that is higher than the feed speed. A countercurrent braking mechanism is employed to decelerate the motor as it approaches the home position, ensuring accurate stopping. Another significant patent is a method of controlling a lens stop position in a copying apparatus. This method detects the amount of lens movement and corrects it if necessary when the lens passes the home position. This innovation allows for the correction of errors in pulse counting, enhancing the reliability of the system.
Career Highlights
Yasumasa Ohba has worked with prominent companies in the industry, including Kokusan Denki Co., Ltd. and Sharp Corporation. His experience in these organizations has contributed to his expertise in optical systems and their applications in copying technology.
Collaborations
Throughout his career, Yasumasa Ohba has collaborated with talented individuals such as Michihiro Matsuoka and Norihide Kunikawa. These collaborations have likely enriched his work and led to innovative solutions in the field.
Conclusion
Yasumasa Ohba's contributions to optical systems in copying machines demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to improving technology and enhancing user experience in copying devices.