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 MediaARTICLESDeep-UV LEDs Could Help Eliminate Coronavirus from SurfacesResearchers at the University of California, Santa Barbara (UC Santa Barbara) are developing ultraviolet (UV) LEDs for decontaminating surfaces and potentially air and water that have come in contact...BioPhotonics Jul/Aug 2020 IssueIntegrated Optical System Helps Contain COVID-19 in AirportsWill automated infection tracking become standard procedure in airports around the world? Real-time thermal monitoring combined with biometric data that could be immediately extracted and analyzed...Photonics Spectra June 2020 IssueVirus Testing Kits to Be Developed Using RNA Imaging TechnologyA Simon Fraser University (SFU) research team will be using RNA imaging technology it has created to develop coronavirus testing kits. The decision to apply the technology, called Mango, to COVID-19...BioPhotonics May/Jun 2020 IssueAR Rapid-Deployment Kits Aid Training, Response to COVID-19To help organizations collaborate and quickly train workers in R&D and manufacturing environments, augmented reality company Apprentice.io is sending dozens of its Tandem Rapid Deployment Kits to...BioPhotonics May/Jun 2020 IssuePRODUCTSOptical Filters for Point of CarePoint of Care (PoC) instruments have various uses in medical diagnostics, including the detection of infectious diseases such as Covid-19. These types of tests only require a single drop of blood,...Promoted Content March 2020 IssueFever Detection SystemA fever detection system from Optris GmbH is based on the 382 × 288-pixel optical resolution PI 450i IR camera and PIX Connect Software to measure the surface temperature of a person’s...BioPhotonics Sep/Oct 2020 IssueFluorescence Filter SetsThe ULTRA SERIES of Fluorescence Filter Sets from Alluxa Inc. was developed for use in real-time quantitative polymerase chain reaction applications such as COVID-19 testing. The series...Photonics Spectra August 2020 IssueThermal Smart SensorThe A400/A700 Thermal Smart Sensor and Thermal Image Streaming Fixed Camera Solutions from FLIR Systems are designed for monitoring equipment, production lines, critical infrastructure, and screening...Photonics Spectra July 2020 IssuePHOTONICS HANDBOOK ARTICLESAcousto-Optic Devices: Charts showing the characteristics of acousto-optic scanning devices, acousto-optic figures of merit, and solutions for common problems with acousto-optic processor devices.ACOUSTO-OPTIC SCANNING DEVICES: CHARACTERISTICS MODULATORS Material Bandwidth (MHz) Rise Time (ns) Acousto Input Power (W) (Saturation) Material Wavelength Range...Photonics HandbookDigital Still Cameras: The Changing Face of Imaging: The digital camera reflects a sea change in the compact camera market. While the 20th was the century of film cameras, the 21st belongs to the digital camera.The 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 HandbookAspheric Lenses: Design Considerations: This first of two articles will cover design and manufacturing options for aspheres; the second will include more detail on manufacturing and testing processes. These articles will provide the tools optics designers need to tailor their designs to the appropriate manufacturing process and to optimize the cost of component fabrication.Aspheric surfaces are powerful tools that combine the optical corrections of multiple lenses into a single element (Figure 1) and affect performance in ways that spherical optics cannot. For example,...Photonics HandbookLens Aberrations: Avoiding Defects in Imagery: A perfect lens can produce a perfect image. But seven primary lens aberrations can blur or distort the image instead, and they should be considered when creating an optical system.A lens collects light from a point on an object and focuses it to a corresponding conjugate point on an image. Under most conditions, the lens fails at this task because of some error in the...Photonics HandbookWHITEPAPERSHealth and Sanitization through UV LightingWith increased awareness and necessity for rapid disinfection methods due to the current coronavirus pandemic, ultraviolet disinfection has become a viable method to achieve it. Determining the...Photonics.com 6/30/2020Methods for Measuring Display Defects and Mura as Correlated to Human Visual PerceptionHuman vision and perception are the ultimate determinants of display quality, however human judgment is variable, making it difficult to define and apply quantitatively in research or production...Photonics.com 1/14/2021Cassegrain Telescope with Fold MirrorThe following document will cover the analysis of a Cassegrain Telescope system. The polarization properties of the system will be measured with the Polaris-M software and the effects on imaging will...Photonics.com 9/17/2019Five Signs that a Photometry-Based Imaging System is the Right Choice for Your Inspection ApplicationPhotometric imaging solutions bridge the gap between machine vision systems and true human vision, offering consistent, quantifiable data for automated processes that matches the visual acuity of...Photonics.com 1/14/2021WEBINARS3D 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 1/22/2021Automation 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 4/9/2015Intracoronary NIRF Molecular Imaging - Translatable ApproachesPlease join us for a FREE webinar. Dr. Farouc Jaffer of Harvard Medical School and Massachusetts General Hospital will present on his lab’s use of cutting-edge fluorescence molecular...Photonics.com 10/24/2016PHOTONICS DICTIONARY TERMSoptogenetic defibrillationAn optogenetic technique that embeds genetically-engineered proteins to the heart to aid in terminating arrhythmias. After the proteins are embedded in the heart, it can be defibrillated by pulses of...EDU.photonics.com 3/5/2018synchrotron radiation (SR)Radiation emitted by electrons when they travel in circular orbits at speeds close to that of light. Synchrotron radiation occurs in the x-ray and ultraviolet regions of the spectrum. Once considered...EDU.photonics.com 9/8/2009Doppler-spread imagingAn imaging process, similar to specific Doppler mapping radar techniques, that utilizes a laser, an optical imaging system, and a line array of photodetectors and spectrum analyzers. The laser...EDU.photonics.com 9/8/2009photoacoustic imagingAbbreviated PAI. An imaging modality with a hybrid technique based on the acoustic detection of optical absorption from endogenous chromophores or exogenous contrast agents. Light is absorbed by the...EDU.photonics.com 6/18/2019MEDIAPhotonic 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 9/4/2013Light Matters Extra: Weird and Strange: Quantum Photonics - 03.2018In this month's Light Matters Extra, we take you to the Quantum Photonics Laboratory at MIT run by Dr. Dirk Englund. Dr. Englund's group, the Quantum Photonics Group, is made up of postdocs and...Photonics.com 3/29/2018Supporting the Photonics Industry from the Laboratory - LIGHT MATTERS 01.2018On this month's episode of Light Matters, we take you to central Massachusetts as Worcester Polytechnic Institute and Quinsigamond Community College take on a comprehensive joint photonics laboratory...Photonics.com 1/18/2018PHOTONICS BUYERS' GUIDE CATEGORIESContrast Enhancement FiltersOptical AssembliesMicrofilm LensesTelephoto LensesTelephoto lenses is a compound lens so constructed that its overall length is equal to or less than its effective focal length.COMPANIESA.R.W. Optical CorporationARW Optical is your reliable manufacturer of quality optics and coatings. Beamsplitters • Prototyping through volume-production quantities • High-performance and durable optical...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' 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' GuideCascade Optical CorporationCascade Optical Corporation has more than 35 years of expertise in custom vacuum-deposited thin-film coatings, specializing in IAD, low temp, low stress coatings for laser crystals and fiber optics....Photonics Buyers' Guide