This inventor holds 6 USPTO granted patents. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 1996-2006.
Company Filing History:
Years Active: 1996-2006
Title: Hiroshige Hirajima: Innovator in Optical Technology
Introduction
Hiroshige Hirajima is a notable inventor based in Tenri, Japan. He has made significant contributions to the field of optical technology, holding a total of 6 patents. His work primarily focuses on advancements in optical pickups, which are essential for the recording and playback of optical disks.
Latest Patents
Hirajima's latest patents include innovative designs for optical pickups. These optical pickups are capable of recording and playback of a plurality of optical disks that have different specifications. They utilize light beams of varying wavelengths and are designed to integrate semiconductor lasers and light receiving elements into a single package. Key features of his patents include the use of first and second semiconductor lasers that are adjacently disposed, a three-beam diffraction grating for generating three beams for tracking control, and a complex polarization beam splitter (PBS) that reflects only light from the first semiconductor laser.
Career Highlights
Hirajima is currently employed at Sharp Kabushiki Kaisha Corporation, where he continues to innovate in the field of optical technology. His work has been instrumental in enhancing the performance and efficiency of optical devices.
Collaborations
Hirajima has collaborated with notable coworkers such as Hiroshi Fuji and Noboru Fujita. Their combined expertise has contributed to the successful development of advanced optical technologies.
Conclusion
Hiroshige Hirajima's contributions to optical technology through his patents and collaborations highlight his role as a leading inventor in this field. His innovative designs continue to influence the industry and improve optical devices.