Company Filing History:
Years Active: 2010-2013
Title: Innovations of Hongzhi Zhao in Polarization Imaging
Introduction
Hongzhi Zhao is a notable inventor based in Malden, MA (US). He has made significant contributions to the field of polarization imaging, holding a total of 2 patents. His work focuses on developing advanced imaging apparatuses that enhance the measurement of Stokes images.
Latest Patents
Zhao's latest patents include a polarization imaging apparatus with auto-calibration. This innovative apparatus measures the Stokes image of a sample and consists of an optical lens set, a first variable phase retarder (VPR) with its optical axis aligned at 22.5°, a second variable phase retarder aligned at 45°, a linear polarizer, an imaging sensor, a controller, and a computer. The two variable phase retarders are controlled independently by a computer through a controller unit, which generates a sequence of voltages to manage the phase retardations of the VPRs. The apparatus incorporates an auto-calibration procedure to correct any misalignment of the VPRs and the half-wave voltage of the VPRs. A set of four intensity images of the sample is captured by the imaging sensor when the phase retardations of the VPRs are set at (0,0), (π,0), (π,π), and (π/2,π). Subsequently, four Stokes components of a Stokes image are calculated using these intensity images.
Career Highlights
Hongzhi Zhao is currently employed at Boston Applied Technologies, Incorporated. His work at this company has allowed him to further develop his expertise in imaging technologies and contribute to innovative solutions in the field.
Collaborations
Zhao collaborates with talented coworkers, including Yingyin Kevin Zou and Qiushui Chen. Their combined efforts enhance the research and development of advanced imaging technologies.
Conclusion
Hongzhi Zhao's contributions to polarization imaging through his innovative patents and collaborations highlight his significant role in advancing this field. His work continues to impact the way we measure and analyze Stokes images, showcasing the importance of innovation in technology.