Kyung-Il Joo

Title: Kyung-Il Joo: Innovator in Active Random Refraction Devices

Introduction

Kyung-Il Joo is a prominent inventor based in Daegu, South Korea. He has made significant contributions to the field of optical technology, particularly in the development of innovative devices that manipulate light. With a total of 3 patents to his name, Joo's work showcases his expertise and creativity in addressing complex challenges in optics.

Latest Patents

One of Joo's latest patents is the "Field of View and Coherence Active Control Random Refraction Device and Manufacturing Method Therefor." This active random refraction device features a random structure that maintains consistent refractive index characteristics, regardless of the polarization direction of light. It incorporates a liquid crystal polymer that alters its refractive index based on the polarization of light, along with a polarization switching device and a refractive surface with a randomly distributed inclination angle. This innovative device can switch between transmission and refractive modes, enhancing its versatility in optical applications.

Another notable patent is the "Holographic Writing Method and Holographic Writing Apparatus." This invention allows for the rewriting and efficient writing of holographic information. The method involves emitting a beam at a holographic recording medium containing a photo-responsible polymer material. This material undergoes photoisomerization, changing its molecular structure upon absorbing light energy. The method utilizes a writing wavelength that differs from the maximum absorption wavelength, optimizing the writing process and improving efficiency.

Career Highlights

Kyung-Il Joo has held significant positions at various esteemed institutions. He has worked with the Kyungpook National University Industry-Academic Cooperation Foundation, where he contributed to bridging the gap between academia and industry. Additionally, he has been associated with the Korea Research Institute of Chemical Technology, further enhancing his expertise in chemical and optical technologies.

Collaborations

Throughout his career, Joo has collaborated with notable colleagues, including Hak-Rin Kim and Jae-Won Ka. These collaborations have likely enriched his research and development efforts, leading to innovative solutions in the field of optics.

Conclusion

Kyung-Il Joo's contributions to optical technology through his patents and career highlights demonstrate his commitment to innovation. His work in active random refraction devices and holographic writing methods positions him as a key figure in advancing optical technologies.