This inventor holds 14 USPTO granted patents and 2 EPO patents, primarily in Light Reflectors. Top assignees: Yupo Corporation, Oji Yuka Goseishi Co., Ltd.. Active years: 1995-2015.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kashima-gun, JP (2003 - 2005)
- Kamisu-machi, JP (2007)
- Ibaraki, JP (1995 - 2013)
- Kamisu, JP (2015)
Company Filing History:
Years Active: 1995-2015
Areas of Expertise:
Title: Hiroshi Koyama: Innovator in Light Reflector Technology
Introduction
Hiroshi Koyama is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of light reflector technology, holding a total of 14 patents. His innovative designs have advanced the efficiency and effectiveness of lighting devices.
Latest Patents
Koyama's latest patents include a light reflector and a planar light source device that utilizes this reflector. The first patent describes a light reflector that features a multilayer film, which includes a substrate layer and an emission line preventing layer with a scale-like light reflecting section. This design ensures that the reflection angle light quantity ratio ranges from 1.5 to 6.5, effectively preventing the generation of emission lines when integrated into a planar light source device or an illuminating device. The second patent details a light reflector with a bidirectional reflectance ranging from 90 to 120% at a light entrance angle of 15° and a light acceptance angle of 0°. This reflector also achieves a bidirectional reflectance of 85 to 110% at a light entrance angle of 75° and a light acceptance angle of 0°. These innovations contribute to high reflectivity and brightness improvement, particularly in underlight-type backlights.
Career Highlights
Throughout his career, Koyama has worked with notable companies such as Yupo Corporation and Oji Yuka Goseishi Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in lighting technology.
Collaborations
Koyama has collaborated with talented individuals in the field, including Takahiko Ueda and Tomotsugu Takahashi. These partnerships have fostered a creative environment that has led to the development of innovative solutions in light reflector technology.
Conclusion
Hiroshi Koyama's contributions to light reflector technology have made a significant impact on the industry. His innovative patents and collaborations highlight his dedication to advancing lighting solutions. His work continues to influence the development of efficient lighting devices.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile