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optics Features
Back-Illuminated CMOS Image Sensors Come to the Fore
Solid-state image sensors come in two variants: CCD and CMOS. CCDs generally offer superior image quality. However, CMOS dominates in manufacturing volume because it permits an integrated solution in which both the imaging device and processing electronics can be fabricated in a single die. The vast majority of CMOS image sensors are front-side illuminated; i.e., the light from the scene to be imaged falls on the processed face of the semiconductor. Another variety is back-side illuminat...
Photonics Spectra, May 2010
Bending Light at will with Transformation Optics
Invisibility cloaks get all the publicity, but they may just be the beginning if the promise of transformation optics can be realized. The discipline could lead to smaller photonic and electronic devices and more cost-competitive solar cells –...
Photonics Spectra, May 2010
High-Throughput Measurement Speeds Production of Large Optics
Dynamic laser interferometry is an established technique for measuring optical-grade surfaces in the presence of vibration and air turbulence. Unlike traditional laser interferometry, dynamic interferometry does not require expensive vibration...
Photonics Spectra, May 2010
Advantages of Polymer and Hybrid Glass-Polymer Optics
Polymer materials with optical properties are being thrust into the design forefront for new, sophisticated electro-optical applications, enabling commercial markets and applications including medical disposables, bar-code scan/recognition, security...
Photonics Spectra, April 2010
Planar Lightwave Circuits Enable Next-Generation 40G/100G Networks
Many new systems rely on advanced modulation formats such as differential phase shift keying and differential quadrature phase shift keying to complement traditional architectures such as dense wavelength division multiplexing. Each method presents...
Photonics Spectra, March 2010
The Year in Stimulus Funding: The impact of the American Recovery and Reinvestment Act on biomedical research
Dr. Francis S. Collins had, as they say, his work cut out for him. In early August 2009, the former head of the Human Genome Project was sworn in as the 16th director of the NIH and thus was charged with overseeing what President Obama would later...
Photonics Spectra, March 2010
Prism Awards Winners: Photonics West 2010
The photonics industry last month took an evening off from the bustle of the show floor to celebrate innovation at the Photonics West 2010 trade show and conference. Ten companies ...
Photonics Spectra, February 2010
Putting Imaging in the Picture
It is now more than 180 years since the first image was captured by Joseph Nicéphore Niépce from an upstairs window on his estate in France using pewter plates and a camera obscura...
Photonics.com, February 2010
The art of microspectroscopy
Martin noted that both spectra and high-resolution digital images can be acquired with the company’s microspectrophotometers, also known as microspectrometers (including its QDI 2010 model), which are designed to measure the UV-VIS-NIR spectra of...
Photonics Spectra, February 2010
Laser Trends: Lasers set to blaze new trails
As the 50th-anniversary celebration of the invention of the laser begins, the industry itself is making a cautious rebound after months of belttightening, consolidation and reasses...
Photonics Spectra, January 2010
Optics Trends: Optical tech sparkled in 2009
In a year that has seen the biggest recession in decades hit most market segments, you might expect a look back at the optics industry in 2009 to be all gloom and doom. But there a...
Photonics Spectra, January 2010
Other Trends: But wait – there’s more … !
Well, now. You’ve read the previous articles covering the ongoing and upcoming trends in lasers, optics and imaging, but you’re probably thinking that there’s more to photonics than those technologies. You are correct; there is much more to the...
Photonics Spectra, January 2010
Old School Versus New in Optical Topology Testing
For the past 100 years or so, makers of optical components have relied on Fizeau interferometers to check surface quality. These devices have allowed manufacturers to detect defects via deviations from regular fringe patterns. However, Fizeau...
Photonics.com, December 2009
Adaptive Optics in Biological Imaging with Two-Photon Microscopy
Cutting-edge biological microscopy has enabled researchers to explore tissue at the subcellular level in vivo. Having the ability to observe physiological processes in vivo has led to breakthroughs in our understanding of cancer, eye disease and...
Photonics Spectra, December 2009
Photonics Is Heating Up in India
India is the seventh-largest country by geographical area and the second-most populous in the world. With approximately 1.17 billion people, it is second only to China, which has 1.34 billion. Situated in south Asia, between Pakistan, China and...
Photonics Spectra, December 2009
Under an Unblinking Eye
Used for displays in all manner of electronic gadgets, LCD panels are a mainstay of everyday life. Dozens of manufacturers – mainly in China, Taiwan, Japan and South Korea – produce a seemingly endless stream of these liquid crystal...
Photonics Spectra, December 2009
Micro Video Lenses Grow Up
A few years ago, micro video lenses were used in machine vision almost exclusively for limited-space and low-resolution applications. But the ongoing reductions in size and cost of optical sensors, along with increases in pixel count, are allowing...
Photonics Spectra, November 2009
Optics in Space
The origins of free-space optical communications can be traced back to the late 19th century, with the introduction of Alexander Graham Bell’s “photophone” and the optical telegraph. Both of these technologies went the way of the daguerreotype, but...
Photonics Spectra, November 2009
Getting a foot in the door: The role of photonics in modern security systems
In times past, a guard might demand someone entering his domain to “halt and be identified.” Today that job is increasingly done by security ID systems using a variety of techniques, including photonic ones such as lasers, optical media and optic...
Photonics Spectra, October 2009
The Photonics Industry Shines in France
“With more than 400 manufacturers of cutting-edge photonics technologies and a solid R&D base, French [photonics] companies have continuously delivered innovative new products that have ensured their strategic position in the global market,”...
Photonics Spectra, October 2009
The Search for Other Earths
In recent years, astronomers have discovered more than 350 extrasolar planets, or exoplanets. But typical detection techniques are best suited for finding planets that are very dissimilar to Earth in terms of size and orbital characteristics, and it...
Photonics Spectra, October 2009
East Asia Photonics Industry: Rising to Opportunity
Views from China Affected by the global economic downturn, the output of some optical manufacturing enterprises in China hit bottom between the fourth quarter of 2008 and the first quarter of 2009, but production has been going up from the...
Photonics Spectra, August 2009
Multiplexing UV-NIR Spectroscopy Measurements
Optical coating of large areas has become an increasingly important step in materials processing. Achieving the highest possible performance and respective yield from large panes of architectural glass, solar cells and thin-film layers requires...
Photonics Spectra, August 2009
Light at the End of the Tunnel Seen for German Photonics Industry
Whether it refers to microscopes or cars, the phrase “German engineering” is synonymous with quality. Ten percent of all Nobel prizes ever awarded have gone to German scientists. Albert Einstein famously won the prize in 1921 for the law of...
Photonics Spectra, June 2009
Photolithography Improved Without UV Light
As computer chips become smaller and more powerful, it is important that their features remain precise. The fact that smaller light wavelengths create smaller features has demanded that developers and manufacturers use expensive and difficult to...
Photonics.com, April 2009
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