Optical Correlation Receiver

Goddard Space Flight Center, Greenbelt, Maryland

Precise distance, time, and pulse width measurements are required for many areas of science and engineering. Time-of-flight methods are often used to measure remote distances. Optical signals are attractive because the small wavelength allows small transmit and receive telescopes. Short pulsed lasers are attractive sources that can provide high-distance measurement precision. Fast optical detectors are typically used at the receiver. Measurement precision is usually limited by the detectors’ temporal bandwidth. Picosecond and sub-picosecond pulses are difficult to measure and resolve. Optical autocorrelators have been used that employ nonlinear crystals. The optical autocorrelators require strong optical signals that can limit or preclude their use for remote, long-distance measurements.

Posted in: Briefs, Tech Briefs, Imaging, Software, Measurements, Lasers, Lasers

Exploration Visualization Environment

A system was designed to integrate engineering data with a virtual environment in support of the design and planning of space-based missions.

Langley Research Center, Hampton, Virginia

The Exploration Visualization Environment (EVE) is a simulation, visualization, and analysis system designed to integrate engineering data with a virtual environment in support of the design and planning of space-based missions. Through the integration of time-dependent data with detailed graphical models within a full-scale three-dimensional solar system or independent reference frame, the analyst can gain valuable insight into the correlation of data with simulation events. EVE provides a rich set of navigation tools (both in time and space) to enable the user to analyze the data. EVE has been developed to run crossplatform under Linux, Windows, and Mac OS X, and draws upon the experience and use of the Synergistic Engineering Environment (SEE).

Posted in: Briefs, Tech Briefs, Imaging, Software, Computer simulation, Imaging, Imaging and visualization, Imaging, Imaging and visualization

Ultrasound Competence Test Metrics

Lyndon B. Johnson Space Center, Houston, Texas

Diagnostic medical ultrasound requires psychomotor skill in image acquisition and cognitive skill in image interpretation. There is a lack of an objective, quantitative, and standardized method to assess psychomotor skill. In traditional radiology and cardiology training programs, physicians are certified based on duration of training and number of procedures performed. However, assessment of trainee skill is now mandated by the worldwide shift toward competencebased medical education. The benefits of skill assessment are: 1) it provides trainees with feedback on their progress, 2) faculty can identify which trainees require additional help, and 3) hospitals have a standard for credentialing.

Posted in: Briefs, Tech Briefs, Imaging, Medical, Patient Monitoring, Software, Imaging, Imaging and visualization, Imaging, Imaging and visualization, Diagnosis, Medical equipment and supplies, Education, Education and training

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, Measurements, Fiber optics, Fiber optics, Terminology, Test equipment and instrumentation, Test procedures

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, Optics, Optics, Emissions measurement, Methane

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, Computer software / hardware, Computer software and hardware, Imaging, Imaging and visualization, Computer software / hardware, Computer software and hardware, Imaging, Imaging and visualization, Autonomous vehicles

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, Optics, Optics, Supply chain management, Counterfeit parts

Miniature Single-Axis Mirror Positioning System

New Scale Technologies, Inc. (Victor, NY) has announced a new developer’s kit in its M3 micro-mechatronic product line. The DK-M3-RS-U-1M-20 is a complete piezoelectric mirror positioning system with a familiar galvo-scanner form factor, but a drastically smaller size – only 12 mm diameter including the embedded closedloop controller.

Posted in: Products, Imaging, Photonics

Medical-Grade Video Cameras

The IK-HD5UM HD video camera from Toshiba Imaging Systems Division (Irvine, CA) meets IEC 60601-1 medical design standards for surgical imaging applications. The 3- CMOS high-definition camera has a 1920 × 1080 pixel format, with both DVI-D and USB 3.0 outputs. Other features include C-mount lens mount, remote control via RS232, switchable formats between 1080p and 1080i, up to 1,000 TV lines resolution, 5 user-configurable scene files, and a binning mode for a 4x increase in sensitivity.

For Free Info Visit:

Posted in: Products, Imaging, Photonics

Radiation Hard Lens for Color Sensors

The new Model 346 non-browning lens from Resolve Optics Ltd. (Chesham, UK) has been designed to operate with color sensors in areas subject to radiation. For any camera lens to survive even quite low levels of radiation, without degradation, they should be produced from non-browning ceriumdoped glass. Unfortunately most non-browning glasses are yellow tinted, which gives color images acquired by CMOS cameras a yellow appearance.

Posted in: Products, Imaging, Photonics

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.