Yifan Dai

Title: Yifan Dai: Innovator in Aspheric Surface Measurement

Introduction

Yifan Dai is a prominent inventor based in Changsha, China. He has made significant contributions to the field of optical engineering, particularly in the measurement of aspheric surfaces. His innovative work has led to the development of advanced technologies that enhance precision in optical measurements.

Latest Patents

Yifan Dai holds a patent for a "Near-null compensator and figure metrology apparatus for measuring aspheric surfaces by subaperture stitching and measuring method thereof." This invention features a variable near-null compensator that utilizes a pair of counter-rotating CGH phase plates. Each phase plate incorporates two terms, Z5 and Z7, of Zernike polynomials. The design includes precision rotary center-through tables that align with the optical axes of the phase plates. The figure metrology apparatus integrates a wavefront interferometer, a test mirror mount, and mechanical adjustment components. The method for measuring aspheric surfaces involves mounting the test mirror, measuring subapertures, and processing data through stitching.

Career Highlights

Yifan Dai is affiliated with the National University of Defense Technology, where he continues to advance research in optical engineering. His work has garnered attention for its innovative approach to solving complex measurement challenges in the field.

Collaborations

Yifan has collaborated with notable colleagues, including Shanyong Chen and Shengyi Li. Their combined expertise contributes to the ongoing development of cutting-edge technologies in optical measurement.

Conclusion

Yifan Dai's contributions to the field of optical engineering, particularly through his patented innovations, demonstrate his commitment to advancing measurement techniques for aspheric surfaces. His work continues to influence the industry and inspire future innovations.