Photonics/Optics

Four Ways to Enable Automated SAE Standard HUD Measurement

Manufacturers of test equipment for automotive head-up displays (HUDs) have partnered with the Society of Automotive Engineers (SAE) Committee to define standard measurement criteria to assess HUD quality. The new standard (SAE J1757-2 “Optical Metrology for Automotive HUD”) will outline optical measurement geometries and requirements for determining HUD performance using light measurement systems. Although no single system is specified, there are several differentiating features among SAE-compliant systems that greatly reduce HUD evaluation time, enabling automated production-level measurement, ensuring compliance, and limiting cost and time to market.

Posted in: On-Demand Webinars, Optics, Instrumentation, Measuring Instruments
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Prototype Shows How Tiny Photodetectors Can Double Their Efficiency

Physicists at the University of California, Riverside have developed a photodetector by combining two distinct inorganic materials and producing quantum mechanical processes that could revolutionize the way solar energy is collected.

Posted in: INSIDER, Materials, Optics, Photonics, Detectors, Sensors
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‘Twisted’ Light Could Illuminate New Path for Wireless Communications

Scientists have taken an important step towards using ‘twisted’ light as a form of wireless, high-capacity data transmission which could make fiber optics obsolete.

Posted in: INSIDER, Communications, Wireless, Optics, Photonics
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Scientists Develop Extreme Light Trapping Technology

A silicon solar cell harvests the energy of the sun as light travels down through light-absorbent silicon. To reduce weight and cost, solar cells are thin, and while silicon absorbs visible light well, it captures less than half of the light in the near-infrared spectrum, which makes up one-third of the sun’s energy. The depth of the material limits absorption. But what if light within the cell could be channeled horizontally so that silicon could absorb its energy along the width of the cell rather than its depth?

Posted in: INSIDER, Nanotechnology, Optics, Photonics
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New Products: November 2017 Photonics & Imaging Technology

High-Energy UV lamp

McPherson, Inc. (Chelmsford, MA) introduces the flow-controlled windowless, hollow cathode UV lamp Model 629. This broad-spectrum source emits ionized gas emission lines with little or no absorption by neutral gas. Computer controlled gas flow and constant current power supply improve stability.

Posted in: Products, Photonics
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An Electron Caught in the Act

How fast is an electron? Australian scientists were able to measure it. Australia's fastest camera, located at the Attosecond Science Facility, has revealed the time it takes for molecules to break apart. The experimental research, conducted by Griffith University's Centre for Quantum Dynamics, aims to help in the design of new molecules for materials science or drug discovery.

Posted in: Briefs, Photonics
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Scientists Demonstrate New Real-Time Technique for Studying Ionic Liquids at Electrode Interfaces

Ionic liquids—salts made by combining positively charged molecules (cations) and negatively charged molecules (anions) that are liquid at relatively low temperatures, often below room temperature—are increasingly being investigated for uses in batteries, supercapacitors, and transistors. Their unique physical and chemical properties, including good ionic conductivity, low flammability and volatility, and high thermal stability, make them well suited for such applications. But thousands of ionic liquids exist and exactly how they interact with the electrified surfaces of electrodes remains poorly understood, making it difficult to choose one for a particular application.

Posted in: Briefs, Photonics
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Optical Probing Deep into the Eye

Optical coherence tomography (OCT) is a scanning technology commonly used by ophthalmologists to check for eye diseases. A team of scientists has figured out how to retrofit these high-performance machines with off-the-shelf components, increasing OCT's resolution by several-fold, promising earlier detection of retinal and corneal damage, incipient tumors, and more.

Posted in: Briefs, Photonics
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CoaXPress Blazes Trail for Faster, Higher Quality Machine Vision

Introduced in 2010, CoaXPress (CXP) has become a leading standard for high-end machine vision, as well as life sciences, security, and defense applications. The CXP standard enables sending high-speed asymmetric serial data over long distances using standard 75-ohm coaxial cable. It currently supports speeds up to 6.25 Gb/S per link. However, the use of multiple links allows scaling up of bandwidth to meet the needs of a specific application. In addition, CXP enables control of the camera and supply of 24V at up to 13W of power per cable — all over the same coaxial cable.

Posted in: Application Briefs, Photonics
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Novel Techniques Examine Solar Cells with Nanoscale Precision

Researchers at the National Institute of Standards and Technology (NIST) have for the first time examined, with nanometer-scale precision, the variations in chemical composition and defects of widely used solar cells. The new techniques, which were used to investigate a common type of solar cell made of the semiconductor material cadmium telluride, promise to aid scientists to better understand the microscopic structure of solar cells and may ultimately suggest ways to boost the efficiency with which they convert sunlight to electricity.

Posted in: Briefs, Photonics
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