Request InfoVolpi USAVolpi USA’s surface-mount-device LED-based bright-field ringlights are available with either red or white LEDs. The standard version has a working distance from 30 to 80 mm, and the diameter of the illuminated area ranges from 110 to 160 mm. A focused version, which maintains a 90-mm diameter of illumination over a working range of 50 to 100 mm, also is available. The company says that the lights reduce shadows and offer greater brightness and uniformity as well as increased image clarity and life expectancy. The compact devices operate over a temperature range from 0 to 50 °C and are...See full productRelated content from Photonics MediaWEBINARSPhotonics.com 8/19/2020Principles and Applications of Light and Color MeasurementThe properties of light that stimulate the eye and build our visual perception also guide the design of illuminated devices. Thanks to well-established scientific methods, we can quantify the human...Photonics.com 7/8/2015Laser Illuminated Maskless h-line LithographyPower Technology will present new options for h-line lithography. Laser light sources have become a viable alternative to LED illuminated maskless lithography systems. Laser technology has several...Photonics.com 11/18/2021Novel Solutions for XR Optical Testing: Displays, Waveguides, Near-IR, and BeyondExtended reality (XR) devices invoke a host of optical innovations — from micro-LED microdisplays to waveguide optics to near-infrared sensing systems. Combinations of these components have...Photonics.com 11/17/2022Introduction to Display Metrology: Evaluating the Quality of Displays Using Scientific Systems and MethodsDisplay screens — on instruments ranging from smart devices to automotive displays to augmented and virtual reality headsets — influence the way individuals connect to the world....PHOTONICS DICTIONARY+ TERMSPhotonics Dictionaryreconstructed imageAn image that appears when a hologram is illuminated by a suitable light source, generally a laser beam.Photonics Dictionaryautostigmatic microscopeA microscope to which a beamsplitter and illuminated reticle have been added to measure the radius of curvature of a spherical surface by locating both surface and center and calculating the distance...Photonics Dictionaryopposition effectAlso referred to as the opposition surge, the opposition effect is a photometric phenomenon in which a rough retroreflective surface appears brighter when illuminated from directly behind the...Photonics Dictionaryscanning spotThe spot illuminated on a cathode-ray tube by the initial impact of the scanning ray and the screen.PHOTONICS BUYERS' GUIDE CATEGORIESLaser CollimatorsTarget CollimatorsAutocollimatorsAn autocollimator is an optical instrument used for measuring small angular deviations with high precision. It operates on the principle of autocollimation, where a light source is directed onto a...Infrared CollimatorsCOMPANIESPhotonics Buyers' GuideXIMEA GmbHWith offices in Germany and the US, XIMEA develops and manufactures scientific and industrial cameras with CCD, CMOS, and sCMOS that utilize USB, and PCI Express (PCIe) interfaces. Applications...Photonics Buyers' GuidePower Technology Inc.At Power Technology, Inc., we have been a driving force in the laser industry for over fifty years. Since 1969, we have been designing, developing, and manufacturing a comprehensive range of laser...