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Thermomechanical Methodology for Stabilizing Shape Memory Alloy (SMA) Response
Space Optical Communications Using Laser Beams
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Spectrum Analyzer

Siglent Technologies (Solon, OH) has introduced a new line of digital spectrum analyzers. The SSA3000X Series includes two new models with frequency ranges from 9 kHz to 2.1 GHz and 9 kHz to 3.2 GHz. These new spectrum analyzers incorporate all-digital Intermediate Frequency (IF) technology for higher measurement accuracy and frequency resolution. With IF technology, the frequency conversion and filtering is accomplished with digital signal processing earlier in the signal path for more accurate and stable values.

Posted in: Products, Imaging, Photonics

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3D AOI Inspection System

Saki Corporation (San Jose, CA) has debuted its 3rd-generation 3D automated optical inspection (AOI) line that accommodates dual lanes, XXL sizes, and increases throughput by 15%. Saki’s new BF- 3Di-D (dual lane) and BF-3Di-Z (extra-large platform) 3D AOI equipment provides measurements of components with a height range between 0 and 20 mm, achieving 1-micron height resolution, a false call rate of less than 100 ppm with 0 escapes, and an increased positioning speed of 50%. The new camera and lighting systems capture extremely clear, detailed images with no shadowing for inspection of the most difficult defects, such as lifted leads, tombstones, reverses, and height variations. For Free Info Visit http://info.hotims.com/61059-221

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Defining and Measuring “LOOSE TIGHT BUFFER” in Fiber Optic Cables

As the optical fiber and cable industry unfolded, several terms were coined to describe specific properties that were new and different from conventional wire processing. One of those that stayed around was the term “Loose Tight Buffer.”

Posted in: Articles, Imaging, Photonics

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Advanced Infrared Camera Maps Methane "Hot Spots"

Methane often appears in the atmosphere at an irregular rate, puzzling researchers challenged with the task of tracking the gas’s sources in the landscape. An advanced infrared camera developed by Linköping University and Stockholm University researchers, in collaboration with the infrared imaging manufacturer Telops, allows users to both film and photograph methane emissions.

Posted in: Articles, Imaging, Photonics

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Cambridge Researchers Take Computer Vision for Test Drive

Google's driverless car, like many autonomous vehicles in development, is packed with sensors, radars, lasers, and cameras. To lighten the load of sensing devices in self-driving autos, researchers at Cambridge University have hit the streets with a system that uses only computer vision.

Posted in: Application Briefs, Imaging, Photonics

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Using Optical Imaging to Combat Counterfeit Components

Counterfeit parts and materials pose a serious threat to the United States defense supply chain. The National Defense Authorization Act (NDAA) of 2012 (Section 818) laid out strict guidelines for DoD prime contractors for detection and avoidance of counterfeit electronic parts1. The Defense Logistics Agency (DLA) identified six federal supply groups in their supply chains that are at high risk for counterfeiting including electrical and electronic components, bearings, hardware and abrasives, pipes and fittings, engine accessories, and vehicle components2. DLA is championing development of anti-counterfeiting technologies that also provide traceability for the parts in its supply chain. A solution called QuanTEK developed by Chromo Logic LLC, involves novel optical imaging methods and has been found to work on a broad class of the DLA identified high-risk federal supply groups.

Posted in: Application Briefs, Imaging, Photonics

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Continental-Scale Mapping of Adélie Penguin Colonies from Landsat Imagery

Remote sensing is used for biological conservation. Goddard Space Flight Center, Greenbelt, Maryland The Adélie penguin has a circum-Antarctic distribution and is widely considered a useful indicator of status and change in the Antarctic and Southern Ocean ecosystems. Breeding distribution of the Adélie penguin was surveyed with Landsat-7 Enhanced Thematic Mapper Plus (ETM+) over the entire continent of Antarctica. An algorithm was designed to minimize radiometric noise and to retrieve Adélie penguin colony location and spatial extent from the ETM+ data. In all, 259 ETM+ scenes were selected from the Lansdat archive from the 1999–2003 era and were used in the retrieval. Pixel clustering identified a total of 244 individual Adélie penguin colonies, ranging in size from a single pixel (900 m2) to a maximum of 875 pixels (0.788 km2). The Landsat retrievals successfully located Adélie penguin colonies that accounted for ≈96 to 97% of the regional population used as ground truth, with errors of omission and commission on the order of only 1 to 2%.

Posted in: Briefs, Tech Briefs, Environmental Monitoring, Imaging, Photonics

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