DOUG FARMER, SENIOR EDITOR [email protected]An optical mapping system has demonstrated that hydroxychloroquine (HCQ) can cause arrhythmia in animals, so researchers and clinicians are cautious about its effectiveness as a treatment of COVID-19 in people. Previously, HCQ, a less toxic form of chloroquine (CQ), has been prescribed to those with malaria and various autoimmune conditions and has showed some promise in reducing COVID-19 symptoms in a limited number of cases. Images show the voltage surface on a rabbit heart with and without HCQ. Without the drug (normal), the electrical activation spreads homogeneously, while with HCQ,...Read full articleRelated content from Photonics MediaArticlesLight Therapy Could Soon Treat Cardiac ArrhythmiaHeart disease is the leading cause of death in the developed world. Sudden cardiac death is triggered by the breakdown of a normal periodic heart rhythm, also known as the sinus rhythm. The emergence...BioPhotonics May/Jun 2023 IssueFlow Cytometry Uncovers Predictive Biomarker for Severe COVIDUsing image-based flow cytometry, researchers at the Technical University of Munich (TUM) identified a biomarker for predicting how serious a COVID-19 infection will be. They also developed a rapid...BioPhotonics.com December 2023 IssueLabel-Free Imaging Shows Dynamics of Intracellular Cargo TransportUntil now, scientists have relied on fluorescence microscopy techniques to study intracellular cargo transport, a vital process to maintaining essential cellular functions. However, the effects of...BioPhotonics Jan/Feb 2024 IssueImaging Method Lights up Brain OxygenationResearchers at the University of Rochester and University of Copenhagen’s Center for Translational Neuromedicine developed a bioluminescence imaging technique that tracks the movement of oxygen...BioPhotonics.com April 2024 IssueProductsShortpass FiltersThe SP870 and SP910 from Midwest Optical Systems, Inc. are shortpass optical filters designed for passing multiple wavelengths with a broad-spectrum camera. The SP870 filters can be used in...Photonics.com 6/20/2024Bandpass FiltersThe ADVANTECH™ hard coat bandpass filters from Andover Corp. offer steep slopes, high light transmission, durability, and long life for demanding applications. The filters provide...BioPhotonics May/Jun 2023 IssueLEDiL Optics KitThe New Energy LEDiL Optics Kit (NELOK) from NewEnergy consists of a single LED mounted on a printed circuit board and attached to a heatsink along with 15 lenses, three each from five lens families....Photonics Spectra November 2023 IssueCamera-optimized IR LEDsThe OSLON® P1616 family of high-power IR LEDs with new camera-optimized emitters from ams OSRAM AG produces homogeneous illumination to fit square or rectangular fields of view. An...Photonics.com 12/6/2022Photonics Handbook ArticlesDigital Still Cameras: The Changing Face of ImagingThe digital camera represents an integration of optics, mechanics and electronics consisting of three layers (Figures 1a, b and c). The top and the middle layers are printed circuit boards (PCBs),...Photonics HandbookThin-Film Coatings: A Buyers' GuideWhat are thin-film coatings? The purpose of any optical thin-film coating is to modify the transmittance and reflectance properties of the substrate material to which they are applied. Most coatings...Photonics HandbookUltraviolet Filters: Past and PresentIn their earliest forms, UV bandpass filters that were optimized for wavelengths less than 400 nm, such as the Schott UG or the Hoya U-series, were constructed of absorbing compounds in glass. Such...Photonics HandbookAspheric Lenses: Optimizing the DesignWith the understanding of aspheric lens manufacturing provided in part one of this article, designers have the tools to optimize their aspheres; the next step is to understand how to specify and...Photonics HandbookWhite Papers“Fingerprint” vs Handheld Raman Applications and the Different Optical Filters That Enable ThemRaman spectroscopy is a powerful non-invasive, non-contact tool capable of identifying molecular constituents of samples. Wavelength selective optical filters are used to block the dominant Rayleigh...Photonics.com 4/28/2023Cricket™² - Advanced Image Intensifier AdapterThe Cricket™² is a plug & play camera image intensifier attachment enabling low light level imaging and extreme high shutter speeds for CMOS and CCD cameras. The Cricket™² fitted with a single MCP...Photonics.com 5/6/2024Telops New HD and Super HD Infrared CamerasHIGH-DEFINITION THERMAL INFRARED CAMERAS WITH UP TO 3 MEGAPIXELS. The HD and Super HD Series are high-performance thermal infrared cameras designed to provide unprecedented image quality with crisp...Photonics.com 7/12/2023Calibration Makes The DifferenceAs a leading manufacturer of light measurement technology, measurement quality has top priority at Instrument Systems. To this end, we operate an DAkkS accredited testing laboratory. There are hardly...Photonics.com 11/6/2023Webinars3D Printing Enables Agile Design for OCT Systems and ApplicationsOptical coherence tomography (OCT) is a biomedical optical imaging technique that uses low coherence interferometry to resolve backscattered light by depth. It has become a widely used technique for...Photonics.com 1/22/2021Get More Out of Your Optical MeasurementsMaximizing the information captured within optical measurements is the key to discovering smaller effects and observing faster processes. Both scales are at the heart of optical measurements, whether...Photonics.com 11/16/2021Automation in Microscopy Captures the Whole SampleKevin McCarthy explores recent advancements in motion control technology that improve the image quality, throughput, size, and cost of digital imaging systems. At the heart of many life science and...Photonics.com 1/22/2021Novel SWIR Detectors and Imagers Approaching the Thermodynamic Detection LimitPhoton detectors are now at the heart of many modern scientific, medical, industrial and security systems. These detectors, whether single-element or imaging arrays, are often the performance...Photonics.com 4/9/2015Photonics Dictionary Termson-board opticsOn-board optics refers to optical systems integrated into devices or platforms for various purposes, such as imaging, navigation, communication, and sensing. These systems are crucial in a wide range...Photonics Dictionaryintensified charge-coupled device cameraAn intensified charge-coupled device (ICCD) camera is an advanced imaging device that combines the capabilities of both an image intensifier and a charge-coupled device (CCD) sensor to achieve...Photonics Dictionaryexcimer laser coronary angioplastyExcimer laser coronary angioplasty (ELCA) refers to a medical procedure used in the treatment of coronary artery disease. This technique involves the use of an excimer laser to perform angioplasty, a...Photonics Dictionaryelectron multiplication charge-coupled device cameraAn EMCCD (electron-multiplying charge-coupled device) camera is a type of scientific camera specifically designed for low-light imaging applications that require high sensitivity and fast readout...Photonics DictionaryMediaPhotonic Silicon & 3-D Printable Optics - LIGHT MATTERS 04.03.2013-Shrinking OCT -Photonic Logic Gate -Intravascular OCT This week on Light matters: bulk silicon emits visible light, 3-D printable optics are open sourced, a European project aims to shrink light...Photonics.com 4/3/2013Laser Classroom & Spaghetti SERS - LIGHT MATTERS 09.04.2013-Spaghetti SERS -Light Heart -Laser Classroom This week on Light Matters: a spaghetti-like surface makes for stronger SERS sensors, light might replace electricity blasts to restore healthy...Photonics.com 9/4/2013Optolong Fluorescence Filter Set Comparation FITC/DAPI/TexasRed - Optolong Optics Co. Ltd.Fluorescent filter is a key component of biomedical and life science instruments, and its main function is to separate and select the characteristic band spectra of excitation light and emission...Photonics.com 4/19/2022Fluorescence Filter Images - Optolong Optics Co. Ltd.Optolong Optics Co. Ltd., brand owner of Optolong, is a manufacturer of fluorescence filters and astronomy filters. We also offer other interference filters including UV filters, visible filters, and...Photonics.com 4/19/2022Photonics Buyers' Guide CategoriesContrast Enhancement FiltersX-Ray FiltersMicroscope AccessoriesMicroscope LensesCompaniesShanghai Optics Inc.ISO 9001 & ISO 13485 certified and D&B DUNS # 113515303 Shanghai Optics is an unparalleled custom system solution provider offering advance precision custom optical design, engineering,...Photonics Buyers' GuideReynard CorporationReynard Corporation has been a premier supplier of custom optics and thin-film coatings to a global customer base since 1984. Reynard focuses on manufacturing the highest quality products with...Photonics Buyers' GuideAvantier Inc.Avantier Inc. is an unparalleled leader in providing innovative imaging systems solutions and optical systems solutions. We offer advance precision custom optical design, optical engineering...Photonics Buyers' GuideMLD Technologies LLCExperts In Thin-film Coating Design We practice a design-before-quote approach to help customers refine specifications and minimize technical risk. We understand how coated optical elements...Photonics Buyers' Guide