Search Results - hongxu+ding

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Telecentric and Broadband Achromatic Objective Lens Systems
Achromatic lens systems with telecentric objectives enhance precision in optical coherence tomography for freeform surface metrology Institute Reference: 2-18091 Background Freeform optical components provide high performance but are challenging to measure with low uncertainty due to their complex shapes. Conventional metrology tools like Optical...
Published: 10/21/2024   |   Inventor(s): Jannick Rolland-Thompson, Di Xu, Romita Chaudhuri
Keywords(s):  
Category(s): Imaging, Optics, Devices
Cascade Fourier Domain Optical Coherence Tomography
Advanced OCT system using cascaded interferometers for precise, non-contact measurement of complex freeform optical surfaces Institute Reference: 2-18049 Background High-precision optical metrology is essential for ensuring surface accuracy, particularly in advanced optics manufacturing, where tolerances can reach sub-nanometer scales. Modern optical...
Published: 10/21/2024   |   Inventor(s): Jannick Rolland-Thompson, Di Xu
Keywords(s):  
Category(s): Optics
Two-terminal multicolor photo-detectors (PD) and focal plane arrays (FPA)
The state of the art of two-color focal plane arrays (FPAs) are two or three terminal photo detector pixels integrated with electronic readout circuits (ROICs). However, a multicolor (> 2) photodetector pixel requires many more terminals, making it very difficult, if not impossible, to integrate multicolor pixel arrays to ROICs due to the increase...
Published: 2/13/2025   |   Inventor(s): Yong-Hang Zhang, Ding Ding, Elizabeth Steenbergen
Keywords(s):  
Category(s): Physical Science, Semiconductor Devices