Search Results - devices

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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: 1/27/2023   |   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: 8/5/2022   |   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: 7/21/2022   |   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: 8/5/2022   |   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: 8/5/2022   |   Inventor(s): William Renninger
Keywords(s):  
Category(s): Devices, Optics
Telecentric and Broadband Achromatic Objective Lens Systems and Method of Use in Optical Coherence Tomography for the Metrology of Freeform Optical Components
ProblemThe application of optical coherence tomography for the metrology of freeform optical components requires objective lens systems that are highly telecentric and broadband achromatic.SolutionTo meet these requirements, two new objective lens designs are invented: a large field-of-view objective, and a large numerical aperture objective. Specifications...
Published: 6/1/2021   |   Inventor(s): Jannick Rolland-Thompson, Di Xu, Romita Chaudhuri
Keywords(s):  
Category(s): Imaging, Optics, Devices
Optical design method and solutions of linear-in-k spectrometers exhibiting extremely low residual nonlinearity
Background A spectrometer is an optical instrument used to measure the intensity of light by wavelength, or wavenumber (k). A conventional spectrometer has intrinsic nonlinearity in k over the pixels due to the nonlinear angular dispersion in k corresponding to the grating or prism used. For spectrometers used in spectral domain optical coherence tomography...
Published: 8/5/2022   |   Inventor(s): Jannick Rolland-Thompson, Aaron Bauer, Changsik Yoon
Keywords(s):  
Category(s): Optics, Devices
Gravitational Camera
This technology describes how a gravimeter may be used as an gravitational imaging device. The pendulum gravimeter may include an interferometer, such as a Sagnac interferometer, to determine a displacement on the pendulum by way of a mirror attached to the pendulum. Scanning of the object may be performed in 1D, 2D, or 3D, and may result in an image...
Published: 6/1/2021   |   Inventor(s): Andrew Jordan, John Howell
Keywords(s):  
Category(s): Devices, Imaging
Hand Held X-Ray Receptor
The present invention is a portable cadmium zinc telluride (CZT), imaging system. It is comprised of a radiation source, a novel sensing mitt (detector), that can be worn or held by the user and a collimator. The collimator is placed in front of the sensing surface of the CZT crystal and a processor converts a representation of the electrical signals,...
Published: 6/1/2021   |   Inventor(s): Frederic Mis
Keywords(s):  
Category(s): Imaging, Devices
A Process for Determination the Radiological Composition of the Corrosion Layers within the Pipes of Light Water Receptors
This invention consists of a cadmium zinc telluride (CZT) gamma spectroscopy system that is highly portable and can be operated by one person. It consists of a multichannel analyzer developed for expected default frequency (EDF).The system along with the novel methods of this technology, allows the device to be used to quantify the level and type of...
Published: 6/1/2021   |   Inventor(s): Frederic Mis
Keywords(s):  
Category(s): Devices, Imaging
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