Hsi-Fu Shih

Title: Innovations of Hsi-Fu Shih

Introduction

Hsi-Fu Shih is a notable inventor based in Chang-Hua Hsien, Taiwan. He has made significant contributions to the field of optical devices, holding a total of six patents. His work focuses on enhancing the functionality and efficiency of optical systems, particularly in high-density disk reading and writing technologies.

Latest Patents

One of Hsi-Fu Shih's latest patents is the "Planar integrated micro-optical pickup head including two planar cylindrical collimators." This invention is designed to perform reading and writing operations on high-density disks. The pickup head comprises a set of optical elements, including a beam splitter, several 45-degree-oriented folding mirrors, and two planar collimators. Additionally, it features a photo-detector, a laser source that emits a short-wavelength laser beam, and an objective lens with a high numerical aperture. The optical elements are fabricated on lower and upper substrates using semiconductor processes, allowing for a compact and efficient design.

Another significant patent is the "Optical device with variable numerical apertures." This invention utilizes the unique optical properties of a liquid crystal medium. By designing external electrodes and a circuit control unit, the refraction index of the liquid crystal can be modulated through external voltage. This innovation allows for the creation of an optical device with variable focal points, enabling it to read optical disks of various specifications.

Career Highlights

Hsi-Fu Shih is affiliated with the Industrial Technology Research Institute, where he continues to develop cutting-edge optical technologies. His work has been instrumental in advancing the capabilities of optical devices, making them more versatile and efficient.

Collaborations

Hsi-Fu Shih has collaborated with notable colleagues, including Mark O Freeman and Tzu-Ping Yang. Their combined expertise has contributed to the successful development of innovative optical solutions.

Conclusion

Hsi-Fu Shih's contributions to the field of optical technology are significant and impactful. His patents reflect a commitment to innovation and excellence in optical device design. Through his work, he continues to push the boundaries of what is possible in high-density disk technology.