Using Aspheres To Increase Optical System Performance

In a perfect imaging system, light exists as a spherical wave that converges to form a point image. However, in practice wavefront aberrations act to perturb the wavefront from its ideal spherical shape, which can degrade image quality. The appropriate use of ashperical lenses in an optical system can improve performance with a minimum addition of optical elements.

Posted in: Articles, ptb catchall


Monitoring Carbon Composite Structures With Optical Fiber Sensors

Fiber reinforced polymer composites are revolutionizing the design of large, high-performance structures in the aerospace, marine and power generation industries due to their advantages in areas such as corrosion resistance, specific strength and tailorability. The use of carbon fiber reinforced composites, the most common and lightest of the “non-exotic” composite materials, is now very widespread. The maiden flight of The Boeing Company’s new 787 Dreamliner, the first commercial aircraft to use composites for most of its construction in December of 2009, is a stark example of just how far carbon fiber composite materials have come in the last 50 years: from hockey sticks, tennis rackets and R&D labs, to carrying us from here to there at 500+ mph.

Posted in: Articles, ptb catchall


Meeting the Demand for Complex Communications Design

Communications engineers today must design to accommodate changing missions, shorter product lifecycles, and increasing computer power. As a result, they create hybrid systems that include RF, high-speed signal processing, lower-speed signal processing, and controls logic and control systems.

Posted in: Semiconductors & ICs, Articles


Reducing Risk With Model-Driven Development

Stories abound of cost overruns, schedule delays, low reliability, and product failures related to development of large-scale systems and platforms. Despite focused efforts to reduce development risk through disciplined and rigorous development programs, a number of factors in today’s development ecosystem make it increasingly challenging to achieve consistent quality and cost-effectiveness throughout the development lifecycle.

Posted in: Articles


Reducing Electromagnetic Interference in Motion Systems

EMI (Electromagnetic Interference) comes in different forms, frequencies, and levels. Electronic equipment has different categories for both emissions and susceptibility. Under normal circumstances, elimination is not possible so reduction to acceptable levels is what can be reasonably achieved. Coupling factors, rise time, emissions, and susceptibility are phrases that must be understood with confidence.

Posted in: Features, Articles


Evolution of the Solid-State Lighting Connector

Keeping pace with emerging solid-state lighting (SSL) applications can be difficult for design engineers, not only from an end-product standpoint, but at the component level as well. Design engineers are challenged to combine their optical expertise with thermal management, power, electronic, and mechanical packaging properties.

Posted in: Features, Articles, Energy Efficiency


Why All The Talk About High-Power LED Technology?

It is in the headlines worldwide. Cities, states, and countries around the globe are transitioning away from traditional lighting and towards newer technologies such as high-power LEDs for traffic, street, and other public lighting applications.

Posted in: Features, Articles, Energy Efficiency, Government Initiatives


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