A metamaterial has been designed with a switchable metasurface that allows it to either block or transmit light waves in response to light pulses. Developed by researchers at the University of Southampton, the optically switchable metamaterial uses the phase-change medium germanium antimony...Read full articleRelated content from Photonics MediaARTICLES3D Images Created on 2D Nanostructured SurfaceA new 2D nanostructured surface has been created that can produce 3D images that are more realistic than holograms and 3D cinema. This could bring a new functionality to small camera lenses, as well...Photonics Spectra September 2017 IssueUltrathin Optical Cavities Could Streamline, Enhance On-a-Chip Color ProductionA Purdue University-led research team has simplified the manufacturing process that allows utilizing multiple colors at the same time on an electronic chip. By embedding silver metasurfaces —...Photonics Spectra December 2018 IssueComplex States of Light Generated via MetasurfaceResearchers have designed a method for converting arbitrary spin angular momentum (SAM) states of light into total angular momentum states. This method is characterized by the superposition of...Photonics Spectra March 2018 IssueMetasurface for Nonlinear Manipulation Could Simplify Wireless CommunicationScientists have developed a metasurface that enables efficient manipulation of spectral harmonic distribution, and have proposed a novel architecture for wireless communication systems based on this...Photonics Spectra March 2019 IssuePRODUCTSFast-Axis Collimator LensesFast-axis collimator (FAC) lenses from LIMO GmbH are designed for all types of diode-pumped laser sources. 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Paulson School of Engineering and Applied Sciences have developed a single flat lens that can focus the entire visible spectrum of light in the same spot and in...Photonics.com 7/5/2018Photonics on the Showroom Floor and in the Lab - LIGHT MATTERS 02.2018On this month's episode of Light Matters, we take you on a brief tour of the Higgins Laboratories at Worcester Polytechnic Institute (WPI). Quinsigamond Community College and WPI received a $4M grant...Photonics.com 2/21/2018WHITEPAPERSKey Considerations when Designing and Implementing an Outdoor-Ready Smart Imaging SystemThe key to a successful all-in-one imaging system is the use of embedded systems – especially when it comes to designing a custom proprietary system. 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The event will feature several 15-minute online presentations on the use of light-based...Photonics.com 6/9/2016PHOTONICS DICTIONARY TERMSmetamaterialA material engineered from artificial matter not found in nature. The artificial makeup and design of metamaterials give them intrinsic properties not common to conventional materials that are...EDU.photonics.com 2/15/2013micro-opticsTiny (less than 2 mm in diameter) lenses, beamsplitters and other optical components used, for example, in endoscopes or microscopes or to focus light from semiconductor lasers and optical fibers.EDU.photonics.com 3/24/2016plastic opticsThe integration of plastic materials into optical applications. When the materials are refined into lenses, prisms and mirrors, they serve the purpose of glass optics at a lower cost and a...EDU.photonics.com 3/24/2016lens mountThe metal tube that maintains the optical components of a lens in proper relationship. Some lenses are mounted in metal cells, which in turn are screwed to the front and rear of a shutter or lens...EDU.photonics.com 9/8/2009PHOTONICS HANDBOOK ARTICLESOptical Objective Systems: A Schematic GuideSimple Meniscus Lens The simple meniscus lens is almost universally used in inexpensive cameras. To get an image of good quality it must be used with a separate aperture stop, reducing the...Photonics HandbookCamera Resolution: Combining Detector and Optics Performance: Most image-quality discussions center on resolution, which is thought to uniquely determine system performance. Resolution, however, is a more complex concept.Camera resolution depends upon the optical blur diameter and the detector size. Schade combined these to create an equivalent resolution that is a function of Fλ/d where F is the focal ratio,...Photonics HandbookCommon Lens Formulas: Formulas for lens focal length, magnification, relative aperture (f/#), object-to-image distance, object-to-lens distance, lens-to-image distance and numerical aperture.Photonics HandbookComponent Choices: Avoiding Tolerancing Mistakes: Designing an optical system involves more than simply understanding the theory behind optics. To design a system efficiently and economically, it is important to understand the capabilities of an optical shop and the interaction of the specifications involved in ordering and designing components.To the novice or casual user of optics, the acquisition of an optical system can be a very difficult experience. 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Specializing in grinding and polishing of hard, durable materials such as...Photonics Buyers' GuideFOCtek Photonics Inc.FOCtek provides customers with all types of custom manufactured lenses, Precision Optical Components, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Laser Crystals, Nonlinear...Photonics Buyers' Guide