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Broadband Achromatic Waveplate and Polarization Camera for Visible, SWIR, MWIR and LWIR

This invention uses broadband achromatic waveplates for a wide bandwidth polarimeter and polarization camera to covers visible, short-wave infrared (SWIR), mid-wave infrared (MWIR), and long-wave infrared (LWIR) regions. The design uses low loss optical materials to operate over a large bandwidth range for higher light collection efficiency, which leads...

Published: 3/3/2026 | Inventor(s): Stanley Pau, Yufei Gao, Alaa Hamdoh

Keywords(s):

Category(s): Technology Classifications > Imaging & Optics > Lens & System Design, Technology Classifications > Imaging & Optics > Medical Imaging, Technology Classifications > Imaging & Optics > Microscopy, Spectroscopy, Polarimetry, Technology Classifications > Imaging & Optics > Optical Fab / Metrology, Technology Classifications > Imaging & Optics > Sensors and Detection > Remote Sensing

Application of Polarization Imaging in Identification and Metrology of Gemstone

This invention presents a method and instrumentation for gemstone identification and metrology using polarization imaging. It is a simple and cost-effective metrology system that distinguishes gemstones of various materials and cuts. The invention uses a combination of filters, a polarization camera, and other elements to form an image of the gemstone,...

Published: 7/23/2025 | Inventor(s): Stanley Pau, Alaa Hamdoh, Linan Jiang, Yufei Gao

Keywords(s):

Category(s): Technology Classifications > Imaging & Optics > Sensors and Detection > Inspection, Technology Classifications > Imaging & Optics > Microscopy, Spectroscopy, Polarimetry, Technology Classifications > Imaging & Optics > Optical Fab / Metrology