Search Results - devices

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See-through Reflective Metasurface Diffraction Grating
Semi-transparent nanostructured surface applicable to AR/VR technology Institute Reference: 2-19053 Background Dielectric reflective metasurfaces provide a versatile alternative to conventional optics, especially in compact near-eye display systems for augmented reality applications. In typical reflective metasurfaces, there is a non-transparent...
Published: 10/22/2024   |   Inventor(s): Jannick Rolland-Thompson, Anthony (Nick) Vamivakas, Fei Cheng, Aaron Bauer, Daniel Nikolov
Keywords(s):  
Category(s): Optics, Devices
Enhanced VR Battery Life through Perception-Guided Color Encoding
Innovative VR display power reduction using color perception technology, which enhances battery life without sacrificing visual quality Institute Reference: 1-24019 Background The rapid advancement of Virtual Reality (VR) and Augmented Reality (AR) technologies has resulted in a growing demand for higher resolution, faster refresh rates, and improved...
Published: 10/22/2024   |   Inventor(s): Yuhao Zhu, Abhishek Tyagi, Jiayi He, Budmonde Duinkharjav, Kenneth Chen, Qi Sun, Nisarg Ujjainkar
Keywords(s):  
Category(s): Optics, Computer Software, Devices
Exploiting Human Color Discrimination for Memory- and Energy-Efficient Image Encoding in Virtual Reality
A VR image compression algorithm reducing DRAM traffic by 66.9% with minimal perceptual quality loss Institute Reference: 1-24027 Background Virtual Reality (VR) is emerging as a ubiquitous computing platform, with applications spanning healthcare, education, communication, training, and design. Efficient computing substrates are critical to VR’s...
Published: 10/22/2024   |   Inventor(s): Yuhao Zhu, Nisarg Ujjainkar, Ethan Shahan, Kenneth Chen, Qi Sun, Budmonde Duinkharjav
Keywords(s):  
Category(s): Optics, Computer Software, Devices
Optical Display Apparatus and Method for Head-Worn Displays
See-through optical display with freeform mirrors for compact, high-performance augmented reality applications Institute Reference: 2-11150-13008 Background Head-worn displays (HWDs) have become critical in augmented reality (AR) and virtual reality (VR) applications. These devices need to be compact and lightweight, with a minimal number of optical...
Published: 10/22/2024   |   Inventor(s): Jannick Rolland-Thompson, Aaron Bauer
Keywords(s):  
Category(s): Optics, Devices
Rapid Screening and Detection of Microplastic Particles
Background Myriad kinds of plastics have found their way into our environment, including many that either do not degrade or do so on the time scale of a thousand years. As plastics in the environment are subject to weather conditions, they break down into smaller particles, eventually reaching micron and even nanoparticle sizes. The presence of these...
Published: 5/7/2024   |   Inventor(s): James McGrath, Greg Madejski, Wayne Knox, Ian Krout
Keywords(s):  
Category(s): Devices
Fail-safe shutter operation system that safely terminates an electromagnetic wave beam upon interlock action
Background High-power electromagnetic radiation (ER) beams are usually isolated in an enclosed area guarded by a safety interlock. Opening of the entry point into the protected area causes the interlock to activate a safety system, preventing individuals from accidental exposure to the ER beam. In some systems, the interlock de-energizes the source...
Published: 5/7/2024   |   Inventor(s): Astrid Mueller, Jeffrey Lefler
Keywords(s):  
Category(s): Devices
Solid-state refrigeration technique based on repeated adiabatic magnetization/demagnetization cycles of a superconductor
Background A conventional refrigerator operates by doing work to compress a fluid and letting it freely expand in a phase transition where it cools down and absorbs heat from a cold reservoir. The now hot fluid is then re-compressed, liquifying it, and then dumps the excess heat to a hot reservoir, which is usually the environment that allows the fluid...
Published: 5/7/2024   |   Inventor(s): Andrew Jordan, Sreenath Manikandan, Francesco Giazotto
Keywords(s):  
Category(s): Devices
Fiber-optic probe and corresponding optical system to detect, deliver, and analyze fluorescence in target tissue
­Background Photodynamic therapy (PDT) is a promising treatment modality for oncology and antimicrobial applications that relies on the excitation of light-sensitive drugs known as photosensitizers by visible light in order to generate reactive oxygen species. The efficacy of PDT is largely determined by the combination of the absorbed light dose...
Published: 5/7/2024   |   Inventor(s): Timothy Baran
Keywords(s):  
Category(s): Optics, Surgical/Medical Device, Devices
A new type of integrated semiconductor laser that achieves ultrafast tuning and switching
Background Frequency tuning of laser sources in Photonic integrated circuits (PIC) has been based on thermal as well as current changes. Thermal-optic tuning is slow (kHz) and current sweep techniques lead to unwanted intensity modulation. PICs still lack ultra-fast frequency modulation and switching, an essential attribute for the wide adoption of...
Published: 5/7/2024   |   Inventor(s): Qiang Lin, Mingxiao Li
Keywords(s):  
Category(s): Optics, Devices
Non-linear fiber resonators enabling robust, inexpensive, and compact fiber femtosecond lasers, amongst other applications
Background Ultrashort pulsed lasers are multi-disciplinary tools that have enabled powerful new technologies, with prominent examples in biomedicine, neuroscience, immunology, embryology, cancer research, metrology, materials processing, telecommunications, chemistry, and energy research. Unfortunately, directly accessible wavelengths are dependent...
Published: 5/7/2024   |   Inventor(s): William Renninger
Keywords(s):  
Category(s): Devices, Optics
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