R. Winn HardinROSKILDE, Denmark -- A new process that impresses holographic optical elements onto polymer rolls could significantly reduce the cost of keeping roads safe at night. According to Ibsen Micro Structures developmental engineer Michael Rasmussen, street signs and reflectors embedded along roads depend on retroreflection as a passive light source. Retroreflection is the process of turning a light ray around and sending it back to its source -- in this case the headlights of an automobile. The results are highly reflective road signs, paint or clothing that keep both drivers and pedestrians safer...Read full articleRelated content from Photonics MediaArticles"Nonlocal" Metasurface Enables High-Performing AR EyeglassesWith conventional AR glasses, there is a trade-off in terms of quality and brightness between the external scene that a wearer actually sees and the contextual information that the wearer wants to...Photonics Spectra December 2022 IssueMetamaterial’s Magnetoelectric Response Could Enable New ApplicationsAn optical metamaterial from Aalto University has the potential to enable applications that would otherwise need a strong external magnetic field to work. The 3D metamaterial demonstrates an...Photonics.com 2/21/2024Acoustic Imaging Aims to Reduce Tissue Damage from Radiation TherapyThe need to deliver the intended, optimal radiation dose to a tumor while sparing the healthy tissue surrounding the cancer is critical to cancer treatments using radiation therapy. Now, with a...Photonics.com 1/18/2023One-Camera Method Reveals Added Insights in Additive ManufacturingThermodynamic insights into the laser powder bed fusion process in additive manufacturing are critical to ensuring the production of quality parts. For example, if too much of the material vaporizes,...Photonics Spectra October 2023 IssuePhotonics Handbook ArticlesVibration Control: Limiting Mechanical NoiseIn general, there are three common approaches to reducing mechanical excitation of photonic systems. The first is identifying the sources of vibration and implementing ways to eliminate or reduce...Photonics HandbookMediaLight Matters Extra: styropyro - 02.2018In this month's Light Matters Extra, we introduce you to Drake Anthony, aka styropyro. Drake, 25, has been building his own lasers since he was 12 years old. He's got quite the following on his...Photonics.com 2/21/2018Capasso Group's Optical Harmonic Combs Could Operate as THz SourceResearchers at Harvard's John A. Paulson School of Engineering and Applied Sciences (SEAS) have discovered a new phenomenon of quantum cascade laser frequency combs, which would allow the devices to...Photonics.com 8/10/2018Jim Kafka, Newport Corporation, USAJim Kafka, Newport Corporation, USA, recounts his memory of joining The Optical Society as a college student.Photonics.com 10/5/2016Light Matters Extra: Optifab 2017 - 10.2017In this month's Light Matters Extra, we give you an in-depth look at North America's largest optical fabrication exhibition and show – Optifab 2017. 188 companies filled the showroom floor of the...Photonics.com 10/26/2017