February 2009

Glenn Rakow, SpaceWire Development Lead, Goddard Space Flight Center, Greenbelt, MD

Glenn Rakow is the Development Lead for SpaceWire, a high-speed communications protocol for spaceflight electronics originally developed in 1999 by the Euro - pean Space Agency (ESA). Under Rakow’s leadership, the SpaceWire standard was developed...

Briefs : Physical Sciences
Measuring Low Concentrations of Liquid Water in Soil

An apparatus has been developed for measuring the low concentrations of liquid water and ice in relatively dry soil samples. Designed as a prototype of instruments for measuring the liquid-water and ice contents of Lunar and Martian soils, the apparatus could also be applied similarly to...

Briefs : Physical Sciences
Compact Microwave Fourier Spectrum Analyzer

A compact photonic microwave Fourier spectrum analyzer [a Fourier-transform microwave spectrometer, (FTMWS)] with no moving parts has been proposed for use in remote sensing of weak, natural microwave emissions from the surfaces and atmospheres of planets to enable remote analysis and determination of...

Briefs : Physical Sciences
Non-Contact Measurement of Density and Thickness Variation in Dielectric Materials

This non-contact, single-sided terahertz electromagnetic measurement and imaging method characterizes micro-structural (e.g., spatially-lateral density) and thickness variation in dielectric (insulating) materials. This method was demonstrated for space shuttle...

Briefs : Physical Sciences
The Mars Science Laboratory Touchdown Test Facility

In the Touchdown Test Program for the Mars Science Laboratory (MSL) mission, a facility was developed to use a full-scale rover vehicle and an overhead winch system to replicate the Skycrane landing event. A driving requirement for the testing facility was the need to support a load of 5,000 lb...

Briefs : Software
Combinatorial Generation of Test Suites

Testgen is a computer program that generates suites of input and configuration vectors for testing other software or software/hardware systems. As systems become ever more complex, often, there is not enough time to test systems against all possible combinations of inputs and configurations, so test...

Briefs : Semiconductors & ICs
InP Heterojunction Bipolar Transistor Amplifiers to 255 GHz

Two single-stage InP heterojunction bipolar transistor (HBT) amplifiers operate at 184 and 255 GHz, using Northrop Grumman Corporation’s InP HBT MMIC (monolithic microwave integrated circuit) technology. At the time of this reporting, these are reported to be the highest HBT...

Briefs : Electronics & Computers
In-Phase Power-Combined Frequency Tripler at 300 GHz

This design starts with commercial 85- to 115-GHz sources that are amplified to as much as 250 mW using power amplifiers developed for the Herschel Space Observatory. The frequency is then tripled using a novel waveguide GaAs Schottky diode frequency tripler. This planar diode produces 26 mW...

Briefs : Electronics & Computers
Smaller But Fully Functional Backshell for Cable Connector

An improved design for the backshell of a connector for a shielded, multiple-wire cable reduces the size of the backshell, relative to traditional designs of backshells of otherwise identical cable connectors. Notwithstanding the reduction in size, the design provides all the...

Briefs : Electronics & Computers
Electronic System for Preventing Airport Runway Incursions

The figure is a block diagram of a proposed system of portable illuminated signs, electronic monitoring equipment, and radio-communication equipment for preventing (or taking corrective action in response to) improper entry of aircraft, pedestrians, or ground vehicles onto active airport...

Briefs : Electronics & Computers
Glove-Box or Desktop Virtual-Reality System

The figure depicts salient features of the optical layout of a desktop-scale virtual-reality system that is specialized for simulating a glove-box work space. The system generates stereoscopic left- and right-eye images of the interior of the work space that show (1) a user extension (defined here as...

Briefs : Manufacturing & Prototyping
Composite Layer Manufacturing With Fewer Interruptions

An improved version of composite layer manufacturing (CLM) has been invented. CLM is a type of solid freeform fabrication (SFF) — an automated process in which a three-dimensional object is built up, point-by-point, through extrusion of a matrix/fiber composite-material precursor. The...

Briefs : Manufacturing & Prototyping
Improved Photoresist Coating for Making CNT Field Emitters

An improved photoresist-coating technique has been developed for use in the fabrication of carbon-nanotube- (CNT)- based field emitters of the type described in “Fabrication of Improved Carbon- Nanotube Field Emitters” (NPO-44996), NASA Tech Briefs, Vol. 32, No. 4 (April 2008), page...

Briefs : Information Technology
Integrated System Health Management Development Toolkit

This software toolkit is designed to model complex systems for the implementation of embedded Integrated System Health Management (ISHM) capability, which focuses on determining the condition (health) of every element in a complex system (detect anomalies, diagnose causes, and predict...

Briefs : Information Technology
TCP/IP Interface for the Satellite Orbit Analysis Program (SOAP)

The Transmission Control Protocol/Internet protocol (TCP/IP) interface for the Satellite Orbit Analysis Program (SOAP) provides the means for the software to establish real-time interfaces with other software. Such interfaces can operate between two programs, either on the same...

Briefs : Software
Autonomous Instrument Placement for Mars Exploration Rovers

Autonomous Instrument Placement (AutoPlace) is onboard software that enables a Mars Exploration Rover to act autonomously in using its manipulator to place scientific instruments on or near designated rock and soil targets. Prior to the development of AutoPlace, it was necessary for...

Briefs : Software
Mission and Assets Database

Mission and Assets Database (MADB) Version 1.0 is an SQL database system with a Web user interface to centralize information. The database stores flight project support resource requirements, view periods, antenna information, schedule, and forecast results for use in mid-range and long-term planning of Deep Space...

Briefs : Software
Trajectory Calculator for Finite-Radius Cutter on a Lathe

A computer program calculates the two- dimensional trajectory (radial vs. axial position) of a finite-radius-of- curvature cutting tool on a lathe so as to cut a workpiece to a piecewise-continuous, analytically defined surface of revolution. (In the original intended application, the...

Briefs : Materials
A Simplified Diagnostic Method for Elastomer Bond Durability

A simplified method has been developed for determining bond durability under exposure to water or high humidity conditions. It uses a small number of test specimens with relatively short times of water exposure at elevated temperature. The method is also gravimetric; the only equipment...

Briefs : Materials
Very High Output Thermoelectric Devices Based on ITO Nanocomposites

A material having useful thermoelectric properties was synthesized by combining indium-tin-oxide (ITO) with a NiCoCrAlY alloy/alumina cermet. This material had a very large Seebeck coefficient with electromotive- force-versus- temperature behavior that is considered to be...

Briefs : Materials
Complex Multifunctional Polymer/Carbon-Nanotube Composites

A methodology for developing complex multifunctional materials that consist of or contain polymer/ carbon-nanotube composites has been conceived. As used here, “multifunctional” signifies having additional and/or enhanced physical properties that polymers or polymer- matrix...

Briefs : Mechanical & Fluid Systems
Ultrasonic/Sonic Anchor

The ultrasonic/sonic anchor (U/S anchor) is an anchoring device that drills a hole for itself in rock, concrete, or other similar material. The U/S anchor is a recent addition to a series of related devices, the first of which were reported in “Ultrasonic/Sonic Drill/Corers With Integrated Sensors” (NPO-20856), NASA...

Articles : Medical
Medical Design Advances Provide New Diagnostic and Treatment Options

Advances in medical design are paving the way for diagnostic and treatment options that previously were thought to be impossible. Today, surgeons, emergency medical personnel, and other healthcare professionals have a myriad of tools and techniques at their fingertips to help...

Briefs : Physical Sciences
Grooved Fuel Rings for Nuclear Thermal Rocket Engines

An alternative design concept for nuclear thermal rocket engines for interplanetary spacecraft calls for the use of grooved-ring fuel elements. Beyond spacecraft rocket engines, this concept also has potential for the design of terrestrial and spacecraft nuclear electric-power plants.

Briefs : Physical Sciences
Pulsed Operation of an Ion Accelerator

Electronic circuitry has been devised to enable operation of an ion accelerator in either a continuous mode or a high-peak-power, low-average-power pulsed mode. In the original intended application, the ion accelerator would be used as a spacecraft thruster and the pulse mode would serve to generate small...

Application Briefs : Communications
Communications and Tracking Services Support Near-Earth Missions
Telemetry, tracking, and command services
ITT Corporation
White Plains, NY

ITT Corporation has been selected by the NASA Goddard Space Flight Center to perform telemetry, tracking, and command services for near-Earth...

Application Briefs : Test & Measurement
Measurement Systems Aid NASA in Study of Space Station Solar Array Anomaly
Surface and roundness measurement systems
Taylor Hobson
West Chicago, IL

NASA’s Marshall Space Flight Center in Alabama is using the Form Talysurf PGI 1230 Surface Measurement and the Talyrond 295...

NASA Tech Needs
NASA Geostationary Coastal and Air Pollution Monitoring

The Geostationary Coastal and Air Pollution Events (GEO-CAPE) mission has been recommended for launch in the 2013-2016 time frame by the National Research Council. The mission’s purpose is to gather science that identifies human versus natural sources of aerosols and ozone precursors,...

An Innovative Approach to Shaker Testing

When it comes to testing products for long-term durability, shock exposure survival, or accelerated life testing, the classic technique most engineers turn to is vibration testing with a shaker table. These controlled experimental tests have been successfully employed in the worlds of automotive,...

Model RPM10 Photo/Contact Tachometer

Extech Instruments, Waltham, MA, has introduced the Model RPM10 photo/contact tachometer that includes a built-in, noncontact infrared thermometer with laser pointer that provides surface temperature measurement ranging from -4 to 572°F in locations that are unsafe or hard to reach. It features a 6:1 field...

Who's Who
Glenn Rakow, SpaceWire Development Lead, Goddard Space Flight Center

Glenn Rakow is the Development Lead for SpaceWire, a high-speed communications protocol for space-flight electronics originally developed in 1999 by the European Space Agency (ESA). Under Rakow’s leadership, the SpaceWire standard was developed into a network of nodes and...

Techs for License
Lossy Compression Technique Varies Data Quality in Response to Bandwidth or Time

Looking at ways to encode an image as a file, one byte in the file contributes information to one pixel (PPM files) or a small group of pixels (GIF, JPEG). In other image technologies such as wavelets, certain bytes contribute much more information than others....

Techs for License
Emissions Control System Provides up to 100% Removal

This emissions control system effectively reduces up to 100% of hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx) from fossil fuel combustion engines. It is suitable for gasoline, natural gas, propane, syngas, and diesel engines. The Emission Reduction System technology is...

NASA Tech Needs
Delivery System to Modify Release of Organic Agricultural Compound

A company’s current product is applied in granular or prill form, and a coating acts to inhibit the release of the product within. The company is looking for a method to modify the release of the organic compound. The compound becomes active when it comes into contact with...

NASA Tech Needs
Technology to Convert, Concentrate, or Dry Oil-Based Emulsions, Dispersions, or Liquids Into a Dry Powder Form

A company supplies a variety of chemicals, including inverse emulsions that consist of a very-high-molecular weight, water-soluble polymer dispersed in a continuous oil phase. The typical ratio of the key components is approximately...

Articles : Robotics, Automation & Control
Magnetostrictive Sensing Ensures Accurate Level Monitoring

For process industries, one of the greatest challenges plant operators face is finding a sensor technology that will provide reliable measurement of liquid levels in tanks while requiring minimal attention and maintenance.

Articles : Motion Control
Multi-turn Encoders Find Home in Industrial Applications

Single-turn encoders have long been used in industrial automation to gauge angular displacement in a broad range of applications, ranging from steering control on a mobile equipment vehicle to boom extensions. A single-turn encoder is a transducer that precisely measures angular...

Articles : Motion Control
Safely Stopping Motion Using Discrete Wiring

Functional machine safety using discrete wiring is an established way to protect workers from injury, and protect companies from the expense associated with accidents and downtime.

Application Briefs : Robotics, Automation & Control
Yaskawa Controllers Help Echo Hill Upgrade Grinding Operation

Echo Hill Automation Inc., a Beamsville, Ontario, Canada company founded by mechanical engineers and brothers Dan and Harry Schellenberg, has grown from a small two-man operation to a successful manufacturer of centerless grinding automation, with the help of servomotors and...

Application Briefs : Robotics, Automation & Control
Renishaw Encoder Improves Positional Accuracy for CNC Optical Maker

When a leading manufacturer of CNC optical manufacturing technology needed ultra-accurate and stable positioning for a new system to measure conformal optics, it turned to ABTech Manufacturing Inc., specialists of custom- made ultra-precision air bearings and motion systems. In...

Products : Robotics, Automation & Control

The KXTE9 accelerometer from Kionix (Ithaca, NY) has embedded algorithms for orientation and activity monitoring. The algorithms simplify the adoption of motion-based functionality in consumer electronics, while reducing operating power consumption.

Products : Robotics, Automation & Control
Optical Encoder

The TONIC optical encoder from Renishaw (Hoffman Estates, IL) packs advanced optics and electronics into a compact read-head measuring 35 × 13.5 × 10 mm. Available in both linear and rotary versions, it supports applications from standard motion control to ultra-high precision stages.

Products : Robotics, Automation & Control
24Vdc Gearmotor

The Model No. MMP-TM55-24V GP52-059 dc gearmotor from Midwest Motion Products (Watertown, MN) produces 60in.-lb. of torque at 78 rpm. Designed to operate on 24 Vdc, it measures 2.14in. diameter × 7.75in. long, and has a keyed output shaft 12mm diameter × 25mm long. Mounting is via four M5 threaded holes.

Products : Robotics, Automation & Control
Ball Valve

A miniature ball valve from Beswich Engineering (Greenland, NH) comes in two configurations. The MBV-1010-303 is for applications requiring an on/off valve, while the MBVT-1010-303 is for applications requiring selecting one of two possible flow paths. The valves weigh 9 and 12 grams, respectively.

Products : Robotics, Automation & Control
Hydraulic Power Pack

The KA power pack from HAWE Hydraulics (Charlotte, NC) can supply pressure up to 10,000 psi utilizing a radial piston pump, or up to 2,900 psi utilizing a gear pump.

Products : Robotics, Automation & Control
Servo Motors

The SM2315D-PLS2 and SM2315DT-PLS2 integrated servo motors from Animatics Corp. (Santa Clara, CA) have a built-in controller, encoder, and amplifier, and can be programmed to control several machines. They achieve resolution up to 4,000 counts/rev. to offer smoother velocity and tighter position control.

Products : Robotics, Automation & Control
Clean Room Motor

The Clean Motors from HaydonKerk Motion Solutions (Waterbury, CT) are designed to limit contaminants and outgassing in vacuum environments. The motors operate in vacuum down to 10-9 Torr.

Products : Robotics, Automation & Control
Micro Manipulator

The MT 105-50-LM micro manipulator stage from Steinmeyer (Burlington, MA) provides a positional accuracy of 1 micrometer, straightness/flatness runout of +/1 micrometer, and repeatability of +/0.2 micrometers. It measures 105 × 151 × 25 mm and weighs 1.0 kg. Features include preloaded cross roller bearings, fixed stops, and...

Products : Robotics, Automation & Control
Position Sensor

The TRACKER TRK-1TO2 position sensor from New Scale Technologies (Victor, NY) measures 8.5 × 11.5 × 1.61 mm and provides 2-micrometer resolution. It can be used as a linear encoder or off-axis rotary encoder and unlike optical encoders, does not require a light source and is suited for optical imaging.

Products : Robotics, Automation & Control
Voice Coil Actuators

A family of linear voice coil actuators from BEI Kimco Magnetics (Vista, CA) include two spring designs based on magnetic rather than mechanical technology. This technology ensures constant and precise valve position in either the open or closed setting when electrical power is off.

Products : Robotics, Automation & Control
Choke Coil

The CM01H900 common-mode choke coil from Taiyo Yuden (U.S.A.) Inc. (Schaumburg, IL) measures 1.2(L) × 1.0(W) × 0.9(H) mm, reportedly the industry’s smallest. The coil’s common-mode impedance is 65 ohms at 100 MHz.

Products : Robotics, Automation & Control
Integrated Motor/Drive

The MDrive14Plus Microstepping and MDrive14Plus Half/Full Step motor/drives from Intelligent Motion Systems (Marlborough, CT) use a NEMA size 14 brushless 1.8in. stepping motor and measure just 1.9 × 1.4 × 2.0 in. The microstepping version is capable of full microstepping, while the Half/Full Step version is for...

Products : Robotics, Automation & Control
Rod Clamp

The AMLOK(R) Hydraulic Series RCH Rod Clamp from Advanced Machine & Engineering (Rockford, IL) is designed to clamp components after the motion has stopped and to hold the position securely as long as the forces do not exceed table values. The clamp’s mounting is designed to apply to heavy-duty NFPA style MF1 cylinders.

Products : Robotics, Automation & Control
Smart Motor Controller

The AH5792 smart motor controller from Diodes Inc. (Hauppauge, NY) integrates a Hall sensor and amplifier, complete digital circuitry, and a full bridge output driver in an SOT553 package. These features eliminate the need for external components such as a timing capacitor, and suit the controller for low-voltage micro...

Products : Robotics, Automation & Control
Nano Positioner

The Nano-SP30 positioning system from Mad City Labs (Madison, WI) is suited for nano-indentation and nano manipulation applications. It provides 25mm of travel with a step size of 95nm. A piezo-driven stage achieves positioning resolution of 0.1nm over 30 microns.

Products : Robotics, Automation & Control
Robotic Gripper

The LEG long-stroke electric gripper from SCHUNK Inc. (Morrisville, NC) weighs only 8.8 kg. When operated with a single servomotor, it delivers a gripping force of 1140 N and a variable stroke from zero to 568 mm. The gripper is available with pneumatic or electric drives, and servo-electric drives make it possible to measure and...

Products : Robotics, Automation & Control
Oxygen Flow Meter

The Oxyview™ polycarbonate oxygen flow meter from Qosina provides in-line monitoring of oxygen levels from 1 to 6 liters/minute. The flow meter can connect close to the patient in any orientation, providing an advantage over gravity-fed components mounted at the oxygen source.

Products : Robotics, Automation & Control
Servo Coupling

R+W (Bensenville, Il) has developed a series of couplings for mounting to flange output servo gearheads, The BK8 coupling allows for an equally compact flexible interface between gearheads and driven components, protecting bearings and simplifying alignment.

Products : Robotics, Automation & Control
Servo Motor Control

The ADAM-5240 from the Industrial Automation Group of Advantech (Cincinnati, OH) is a 4-axis stepping/ pulse-type servo motor control module for use with the ADAM-5550 series PACs (Programmable Automation Controllers). The module simplifies stepping and pulse-type servo motor control.

Products : Robotics, Automation & Control
Bearing Monitoring Module

The 750-645 2-channel vibration and roller bearing monitoring module from WAGO Corp. (Germantown, WI) tracks machine vibration conditions. Based on ISO’s 10816-3 mechanical vibration standard, it monitors and analyzes vibration severity and shock pulse feedback using WAGO’s 750-925 Tandem-Piezo(R) acceleration...

Products : Robotics, Automation & Control
Motion Card

The Prodigy family of motion cards from Performance Motion Devices Inc. (Lincoln, MA) now gives machine designers the capability to download and run motion programs. This capability off-loads the PC host and increases the flexibility to distribute motion programs throughout the machine. Programs can be downloaded to the Prodigy card...

Products : Robotics, Automation & Control
AC Gearmotor

The VWDIR20 AC gearmotors from Bison Gear & Engineering Corp. (St. Charles, IL) are rated 1/4 hp (186 watts) at 115V, 60 Hz. The compact, integral gear reducers feature a phenolic high speed gear for low noise and steel gearing in subsequent stages, with ratios ranging from 14:1 to 286:1. Continuous torque ratings range from 100...

Products : Robotics, Automation & Control
Linear Drive System

The RPS4014 linear drive system from Nexen (Vadnais Heights, MN) adds two rollers for a total of 14, and a wider rack to double thrust capacity of 14000 Nm. It is available in a standard grade with positional accuracy of +/-50 micrometers and a machine oil finish; a premium grade achieves positional accuracy of +/-30...

Articles : Photonics/Optics
Specialty Fibers Guide Light When the Going Gets Tough

In spectrometry, the more light gathered the better the results. Yet in many applications, both military and commercial, the need to protect instruments or operators from harsh environments, as well as installation constraints, make conventional line-of-sight optics impractical. Specialty...

Application Briefs : Photonics/Optics
Using Vision Sensors to Eliminate Manufacturing Defects

Supplying parts to the world’s leading automotive companies leaves no room for error. That’s why Miniature Precision Components Inc. (MPC) uses three vision sensors to error-proof the automated assembly of oil-caps at its Prairie du Chien, WI facility. With 41 molding machines ranging...

Products : Photonics/Optics
Product of the Month: Infrared Camera

The ICI 7320 infrared camera from Infrared Cameras (Beaumont, TX) operates on 1 watt of power via USB connection. IR Flash software provides real time radiometric data stream directly to a hard drive or portable device. The camera can be mounted in many available ICI enclosures that meet NEMA 4 - NEMA 9...

Products : Photonics/Optics
Large Format MWIR Lens

StingRay Optics (Keene, NH) introduces a 50mm, f/2.3 Midwave Infrared (MWIR) large format lens assembly. The 50mm lens offers flexibility as either a stand alone solution for large format detectors or in conjunction with the enhanced resolution features. The MWIR large format lens assembly offers diffraction limited...

Products : Photonics/Optics
Light Measurement System

Labsphere (North Sutton, NH) offers the HalfMoon Total Forward Spectral Flux Measurement System designed for manufacturers of LEDs, light fixtures, and displays. Available in standard 12, 20, and 40 inch diameters, the HalfMoon system provides an alternative to integrating sphere photometer and goniophotometer methods of...

Products : Photonics/Optics
Optical Fibers and Cables

Fiberguide Industries (Stirling, NJ) offers single mode, multimode, graded index, tapered, and metal-coated optical fibers that are suitable for applications in the medical/biomedical and spectroscopy industries, as well as for use by industrial OEMs. The specialized optical cables utilize air gap technology to...

Products : Photonics/Optics
Laser Diode

TRUMPF (Farmington, CT) introduces the next generation of TruDisk lasers. With up to 16 kW of power, the high brightness, fiber delivered laser is ideal for demanding industrial applications. The TruDisk lasers maintain beam quality regardless of increases in power resulting in a scalable design. With the TruDisk’s integrated power...

Products : Photonics/Optics
Video Microscope Sampling System

The BAC151 from B&W Tek (Newark, DE) is a video microscope sampling system compatible with B&W Tek’s laboratory and industrial Raman probes. The system features a color video camera for convenient alignment and viewing of the measurement field. The BAC151 accepts standard microscope objectives and...

Products : Photonics/Optics
Optical Transmittance Spectrometer

For accurate, repeatable, real-time transmittance measurement of optical lenses and other optical components, Ocean Optics (Dunedin, FL) has introduced the Optical Transmittance Spectrometer (OTS). The compact system measures tint color, photopic transmittance, and UV cutoff of ophthalmic lenses, optical...

Products : Photonics/Optics
Laser Beam Shaping Module

StockerYale (Salem, NH) offers the Flat-Top Generator, a laser beam shaping module that converts a Gaussian beam into a focused, collimated, or diverging flat-top profile, using refractive beam shaping optics. The module can maintain a high degree of uniformity, power, and intensity over large distances. The Flat-Top...

Products : Photonics/Optics
Hydrogen Sulfide Gas Analyzer

Picarro, Inc. (Sunnyvale, CA) now offers an analyzer for monitoring trace levels of H2S (hydrogen sulfide) in ambient air, with a low detection limit of 1 ppbv. Based on the company’s WS-CRDS (Wavelength-Scanned Cavity Ring Down Spectroscopy) technology, the Picarro G1104 H2S analyzer provides a large dynamic...

Products : Photonics/Optics
4K Resolution Camera

DALSA Corporation (Waterloo, ON) offers the Spyder3 4K camera with 4K resolution and 14x14um or 10x10 um pixel size. The camera is particularly well-suited for film, glass, 100% print and web inspection, as well as other general machine vision applications. It uses DALSA’s patented dual line scan sensor technology, which...

LED Optometer

UTD Instruments (San Diego, CA) introduces the portable S-471 LED Optometer. Designed and configured for all LED measurement requirements, the instrument features microprocessor control and three measurement data-presentation options: direct display measurement with analog bar, RS-232C computer interface, and analog voltage input....

Corrective Lens

Coastal Optical Systems (West Palm Beach, FL) introduces the CoastalOpt® 60mm UV-VIS-IR 1:4 Apo Macro lens. The 60mm UV-VIS-IR 1:4 Apo Macro provides full apochromatic correction over a broad waveband ranging from the onset of atmospheric ultraviolet transparency at 315nm to the limit of CCD/CMOS sensitivity at 1100nm in the...

Products : Photonics/Optics
White LEDs

OSRAM (Santa Clara, CA) has introduced white LEDs with an operating current of 350 mA, brightness peaked at a value of 155 lm, and efficiency at 136 lm/W. Potential applications for the high-performance LED technology include general illumination, the automotive sector, and any application that requires large, high-power LEDs. These...

Products : Photonics/Optics
Light Source Software

Radiant Imaging (Duvall, WA) has released ProSource 8.0 software for light source near-field data analysis and ray generation. ProSource 8.0 generates ray data that accurately represent the output of the light source and can be exported for use with all popular optical and illumination system design software packages. Users...

Question of the Week
Would You Cook with ‘Julia?’