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Holographic Combiners Improve Head-Up Displays
Combiners are semitransparent surfaces used in head-up display (HUD) and augmented reality (AR) systems to overlay an image presented by a projector on top of the viewer’s physical world. The combiner is transparent and lets the viewer see through it, while simultaneously reflecting dynamic digital information. Over the years, combiners have evolved from simple semitransparent flat surfaces that passively reflected light from projectors to sophisticated conformational holograms that
Photonics Spectra, May 2019
Optical Advancements Enable High-Precision 3D Imaging
As robotics and automation change the face of manufacturing, demands on industrial inspection have increased. Advancements in engineered point spread function (E-PSF) technology are now allowing manufacturers to incorporate high-resolution 3D...
Photonics Spectra, April 2019
Positioning Technology Gets Smart
Over the span of 40 years, the field of precision positioning has vaulted forward in deeply beneficial ways. Submicron-resolution linear encoders, for example, once available only in the costliest stages, are now affordably integrated into...
Photonics Spectra, April 2019
3D Optical Profiling in Automotive Manufacturing
The automotive industry has undergone major changes over the past couple of decades because of a combination of internal and external factors that include competitive cost-reduction actions and increased environmental regulations. These factors have...
Photonics Spectra, April 2019
Member Exclusive
Imaging in the Blink of an Eye
CMOS cameras and sensors are getting faster. That’s good news for researchers and for the autonomous vehicles market, among others. For researchers, faster imaging enhances spectroscopy, improves resolution, and makes it easier to capture...
Photonics Spectra, April 2019
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Hollow-Core Optical Fibers Offer Advantages at Any Wavelength
Conventional optical fibers are fabulously successful, but they have profound limitations. These include a finite spectral transparency, susceptibility to optical damage, dispersion — which restricts the ability to deliver short and ultrashort...
Photonics Spectra, April 2019
Smart Structures on the Rise
Futuristic smart cities are having their day, with numerous announcements in the past year of plans to begin developing high-tech urban endeavors all over the globe. Developers have revealed ambitious plans for smart cities in the U.S., Canada,...
Photonics Spectra, April 2019
Prism Award Winners Take Center Stage
Amid the bustle of Photonics West, some of the industry’s top innovators gathered on Feb. 6 to honor the best products and advancements at the “Oscars of the photonics industry” — the Prism Awards for Photonics Innovation....
Photonics Spectra, March 2019
Designing Large Fizeau Interferometers
Laser Fizeau interferometers are the workhorses of optical testing. With proper configurations and accessories, these instruments enable characterization of flats, prisms, concave and convex lenses, and even aspheric elements. While many laser...
Photonics Spectra, March 2019
Micro-LEDs Could Have a Big Impact on Displays
Small, as in microscopic, LEDs promise brighter displays and longer-running mobile devices, but only after manufacturers overcome several challenges. Known as micro-LEDs, these semiconductor chips are generally 10× smaller in width and length...
Photonics Spectra, March 2019
CMOS Imaging: From Industry to Consumer and Back Again
Technology often advances unnoticed. Incremental improvements may only be seen by insiders in industries that a technology already calls home. Sometimes it achieves a breakthrough point and whole societies can change as a result. This often happens...
Photonics.com, March 2019
All-Diamond Metamaterial Optics
The strongly bound and tightly packed crystal lattice that comprises diamond makes it an ideal candidate for extreme optical and photonic devices. Thanks to the unique combination of its outstanding thermal, mechanical, and optical properties,...
Photonics Spectra, March 2019
Chalcogenide Aspherical Lenses in IR Imaging
As the thermal imaging market continues to rapidly expand, a broad array of commercial applications has placed an increased emphasis on balancing cost and performance. While some still perceive conventional materials and manufacturing methods of...
Photonics Spectra, March 2019
Optics Improvements Prompt Enhanced Component Parameters
For defense and security applications, size matters. So do weight, power, and cost. These four parameters are often referred to as SWaP-C, a key concept that drives the manufacture of defense and security systems, sensors, and optical components....
Photonics.com, March 2019
Growing Developments with NIR Spectroscopy
The growing number of health-conscious consumers has accelerated the market for wearables and smart mobile devices, enabling almost everyone to monitor their vital signs. A next goal for such technology is to help consumers monitor ingredients in...
Photonics.com, March 2019
Measuring NIR Sources for Safe and Accurate 3D Sensing
3D sensing with NIR wavelengths has taken off in the past several years, with use in such applications as facial and gesture recognition, eye tracking, and automotive vision systems such as lidar. The market for these optical sensing systems is...
Photonics Spectra, March 2019
Member Exclusive
Cannabis Industry Boom is a Boon for Spectroscopic Detection
Despite remaining illegal at a federal level and in about one-third of states, the legal cannabis industry in the U.S. has become a nearly $11 billion business — a figure that is predicted to double by 2022. The boom of the industry, which...
Photonics Spectra, March 2019
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Testing Optical Fiber: Undersea and Downhole Applications
Many land and undersea oil operations rely heavily on temperature sensing for improved safety and functionality in harsh environments. Silica-based optical fibers have been increasingly used for distributed temperature and acoustic sensing...
Photonics Spectra, February 2019
Measuring Optics with Spectrally Controlled Interferometry
Measuring flat and prismatic optics with a traditional laser interferometer is difficult to impossible. Optical engineers, scientists, and technicians struggle to obtain accurate measurements on optics with two or more flat and parallel optical...
Photonics Spectra, February 2019
Fiber Optics for High-Power Applications
Specialty fiber components are an increasingly important part of generating and transmitting high-power laser beams for applications ranging from materials processing to laser surgery to lidar. These applications require precision — with...
Photonics Spectra, February 2019
Li-Fi Adds Data to Light the Way
In the late 1800s, Thomas Edison’s incandescent light bulb glowed for the first time. Within the next decade or so, Guglielmo Marconi’s wireless telegraph ushered in the era of radio frequency (RF) communication. But it wasn’t...
Photonics Spectra, February 2019
For Scientific Ultrashort-Pulse Lasers, the Sky Is Not the Limit
The 2018 Nobel Prize in physics, awarded jointly to Gérard Mourou and Donna Strickland for their chirped pulse light-amplification tech­nique, confirmed that ultrashort-pulse laser technology has reached a widespread prominence. Their work in...
Photonics Spectra, February 2019
Member Exclusive
Data Needs Drive Underwater Fiber Developments
Data traffic will nearly double in the next three years, according to analysts. Many bits will travel between data centers over land, and many will make the long journey across the ocean, moving through fiber optic cables that sit on the seafloor....
Photonics Spectra, February 2019
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The Shrinking Green Gap: Trends in Solid-State Green Emitters
Human eyes are most sensitive to light in the yellow-green region of the visible spectrum. This well-known fact is a result of the way mammalian eyes, and for that matter the eyes of all land-dwelling animals, have evolved from those of aquatic...
Photonics Spectra, January 2019
2019 Prism Awards Recognize Finalists
Retinal projection laser eyewear, the world’s first cloud-based AI hand-held Raman spectrometer, and the first accurate stereo photogrammetry device that fits in the palm of a hand will all converge at the 2019 Prism Awards for Photonics...
Photonics Spectra, January 2019
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