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lenses Features
Gas Purging Keeps UV Systems Healthy
Photochemical deposition of organic films is a significant cause of performance loss in ultraviolet systems; when feasible, it can be reduced or eliminated with inert gas purging. Ultraviolet photons are highly energetic – enough to break bonds and reorganize molecules. They can efficiently reduce silver salts in photographic emulsions and damage DNA by dimerizing thymine bases. UV spectroscopy yields insight into high-energy processes in planetary atmospheres, stars and fusion
Photonics Spectra, October 2014
Micro Thermal Camera Opens Applications to Consumers
Personal thermal imaging just got affordable – but the technology can be used in various industries, too. Thermal imaging is hardly new, but most of us don’t carry thermal imagers in our pockets. Not yet. But it could happen soon, thanks...
Photonics Spectra, October 2014
Additive Manufacturing: The Laser Source Is Critical
Laser beam power, spot size and focal point must be measured and controlled to produce parts to specification through 3-D printing. Laser-based additive manufacturing (AM) involves the deposition of a precise amount of material in a layer- by-layer...
Photonics Spectra, October 2014
Lens-Free Microscopes Offer Real-Time Bio Imaging
A totally different type of microscope will be much smaller and less complex than traditional microscopes, but more powerful. Two years ago, a customer handed Richard Stahl and the imec team a challenge: one year to develop a microscope that could...
Photonics.com, September 2014
Dual-Band Monitoring Keeps Trains Running in Winter
Keeping critical parts of the railroad infrastructure free of snow, sleet, hail and ice – and even detecting unauthorized persons walking the rails – is essential for a safe and uninterrupted transportation service. Dual-band monitoring...
Photonics Spectra, September 2014
Understanding Actively Q-Switched Solid-State Lasers
With an increased quantitative understanding of the operation of Q-switched lasers come huge benefits for laser design. This first article in a two-part series focuses on actively Q-switched lasers; the second part, in a later issue, will cover...
Photonics Spectra, September 2014
Mergers, Acquisitions and More
June 2013 through May 2014 Just a few short months ago, our January issue included a feature titled “Where the Jobs Are Now” by Howard Rudzinsky, who noted that the U.S. had experienced 44 months of continuous job growth with a comeback...
Photonics Spectra, August 2014
Laser-Power Measurement Solves Challenges for Materials Processing
The days of finicky, unstable, high-maintenance laser systems are quickly becoming a thing of the past. Legacy laser systems are being replaced with better sources, components and total systems, bringing more robust laser processes to production...
Photonics.com, July 2014
Scanning Vision Continues to Improve Manufacturing Standards
The future of scanning vision systems is to make the underlying technology more accessible, robust and foolproof. From semiconductor manufacturing to the display industry, scanning vision technology is widely found along production lines. In fact,...
Photonics Spectra, June 2014
Transparent Ceramics Enable Large, Durable, Multifunctional Optics
Aluminum oxynitride and magnesium aluminate spinel are mechanically strong, hard and scratch resistant; they are also chemically durable. Both exhibit broadband transmittance from near-UV to mid-IR. Single-crystal sapphire has been the material of...
Photonics Spectra, June 2014
Light Sources, Filters Enable 3-D Sensing Advances
Improving the manufacturability, reliability and size of hardware components for 3-D sensing systems opens up new applications for the technology. Today, a growing number of smart TVs and operating systems respond to gestured commands by changing...
Photonics Spectra, May 2014
'Wheel Service' Relies on Imaging Technology
Image-based bar-code reader helps NASCAR race teams feel more secure on their wheels. NASCAR teams go through a lot of wheels. A single team typically owns about 260 wheels, consisting of both single- and double-stem versions of the 15-in. steel...
Photonics Spectra, April 2014
The Better to See You With
Advances in manufacturing and materials will help the military spot targets faster – and from farther away. For the military, the name of the game is to see first and farthest, which makes optics vital. The length of an optical path can set...
Photonics Spectra, April 2014
InGaAs SWIR Cameras Open New Opportunities
Shortwave infrared imaging is finding new applications by improving spectroscopy, inspection and more. A whole new waveband of the electromagnetic spectrum has been opened up for exploitation in the past few years – the shortwave infrared...
Photonics Spectra, March 2014
Materials Evolving for Lighter, Stiffer Optics
Building better optical materials will impact applications in high-energy lasers, consumer devices and more. For optical materials, less can be more: Coatings that reflect less could lead to displays that are brighter and can be seen over a wider...
Photonics Spectra, March 2014
New Approaches Improve Beam Expansion
Afocal beam expansion systems based on the basic principles of Kepler and Galileo telescopes can be improved in terms of wavefront quality by using additional optical surfaces or aspherizing them using monolithic beam expansion elements. Everyday...
Photonics Spectra, March 2014
Covert IR Optical Taggants Enhance Identification
Covert IR taggants represent a strong photonic tool in identifying key personnel and materials in both military and civilian applications. Covert infrared taggants are embedded markers that can emit coded optical signals outside of the visual...
Photonics Spectra, February 2014
Real-Time 3-D Replays Bring Fans Closer to Action
Imaging technology is a real game changer for Dallas Cowboys fans and refs at AT&T Stadium. Figuring out which team came up with the football during a postfumble player pileup has gotten a whole lot easier – at least, it has for Dallas...
Photonics Spectra, February 2014
Selecting Industrial Laser Optics
Lasers are one of the most significant and prevalent inventions of the 20th century. They have created entire industries, optimized many processes and enabled thousands of applications ranging from CD players to nuclear fusion research. It is...
Photonics.com, January 2014
Trends in Optics
Advances in optics in the past year or two have ranged from promising new optical materials to innovations in existing technologies. From optical coatings and add-on kits to quantum dots and metadevices, the scope of progress is as extensive as it...
Photonics Spectra, January 2014
Silica-Based Fiber Boosts Broad-Spectrum Spectroscopy
Fibers with a broad optical spectrum are useful in spectroscopic applications because they enable the collection and analysis of more information over a greater wavelength range. A variety of spectroscopic applications require light transmission...
Photonics Spectra, November 2013
GDD Measurements Boost Ultrafast Laser Performance
Easy group delay dispersion measurements improve results in applications such as laser amplifiers, optical coatings, harmonic generation, bioimaging and microscopy. “Dude, where’s my pulse width?!” Anybody working with an ultrafast...
Photonics Spectra, October 2013
How Wedge and Decenter Affect Aspheric Optics
A look at the geometric parameters of aspheres and how they differ from those of spherical optics as well as the metrology techniques required to quantify those parameters in manufacturing Driven by the ever-increasing resolution and field size of...
Photonics Spectra, October 2013
Wafer-Scale Micro-Optics Fulfill Promise
Early inventions in the field of planar diffractive and refractive micro-optics date back more than a century. In 1891, Gabriel Lippmann invented “interference color photography,” later called Lippmann holograms. This invention was made...
Photonics.com, September 2013
Faster Mold Coating Tests Make Glass Processing More Efficient
Bypassing the time-consuming wear stages of heating and cooling allows quick testing of mold coating lifetimes while increasing efficiency for precision glass molding. Optical components that fulfill complex functions by using complex-shaped...
Photonics Spectra, August 2013
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