Company Filing History:
Years Active: 1998-2002
Title: Isao Yoneda: Innovator in Laser Diode Technology
Introduction
Isao Yoneda is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of laser technology, holding a total of 5 patents. His work primarily focuses on advancements in semiconductor laser modules and array type laser diodes.
Latest Patents
One of his latest patents is for an array type laser diode. This invention includes an active layer, a cathode electrode, and bonding electrodes. The active layer is formed in a substrate into a stripe shape to serve as an emission portion. The cathode electrode is formed on a mounting surface of the substrate into a stripe shape to be close to the active layer. The bonding electrodes are formed on the mounting surface of the substrate to be physically separated from the drive electrode.
Another notable patent is related to a pitch-converting substrate used in semiconductor laser modules. The objective of this invention is to effectively use semiconductor laser elements by suppressing difficulties caused by heat generated during mounting and light emission. The semiconductor laser module comprises a light source-mounting section, where multiple semiconductor laser elements are mounted, and an optical fiber-fixing section that supports multiple optical fibers at a predetermined lateral pitch. A pitch-converting section is provided between these two sections to guide lights emitted from the semiconductor laser elements to the corresponding optical fibers. The light source-mounting section, pitch-converting section, and optical fiber-fixing section are all formed on the same substrate.
Career Highlights
Isao Yoneda is currently associated with NEC Corporation, a leading technology company in Japan. His work at NEC has allowed him to push the boundaries of laser technology and contribute to various innovative projects.
Collaborations
Throughout his career, Isao has collaborated with notable colleagues, including Junichi Sasaki and Masataka Itoh. These collaborations have further enriched his work and led to advancements in the field.
Conclusion
Isao Yoneda's contributions to laser diode technology and semiconductor laser modules have made a significant impact in the industry. His innovative patents and collaborations highlight his dedication to advancing technology in this field.