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Photonics Spectra - February 1998
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Issue Library
Features
Choosing Lighting for Industrial Imaging: A Refined Art
As industrial imaging has grown in popularity over the past few years, so has the awareness that lighting represents a large part of a vision system's success. The primary function of lighting in industrial imaging is to make an object's features of interest stand out. Depending on the application, however, illumination needs can vary greatly.
Fundamentals of Semiconductor Lasers
Semiconductor laser diodes are the smallest, most reliable, and most efficient light source known to man. For that reason, they are commercially interesting devices. Laser diodes have created...
Industrial Imaging:
Whether it is a simple $10,000 turnkey system, or a $500,000 customized job, the industrial imaging designer faces hundreds of device options, each with a host of suppliers waving fists full of...
Machine Vision's Next Frontier:
As the demands on machine vision continue to increase, the last year has seen two distinct phenomena: The rise of the so-called "smart camera" and the push to develop networked camera systems. These...
Microlasers:
The progressive replacement of gas lasers and flashlamp-pumped solid-state lasers by more efficient diode-pumped solid-state lasers started in laboratories more than a decade ago. Pumped with a 1-W...
Tech Pulse
Lasers Aid in Bacteria Destruction
GLASGOW, Scotland, UK -- Heating bacteria to high temperatures will kill them, but exposing them to Nd:YAG laser light does it better, according to research findings at the University of Glasgow. Ian...
Laser Bursts Strengthen Metal Parts
LIVERMORE, Calif. -- A new high-energy "laser peening" process can improve metal parts by sending a shock wave through the metal, inducing compressive stresses that reduce metal fatigue and boost...
Optical Coating Absorbs in UV Range
Reducing stray light is a problem that engineers often encounter when designing optical instruments. One method of achieving this reduction is to apply absorptive coatings on an instrument's critical...
Crystal Eases Blue Laser Production
TROY, N.Y. -- Researchers at Rensselaer Polytechnic Institute have revived a bit of history in time for the first commercial blue-diode lasers. Companies hoping to manufacture blue lasers face...
Fiber Gratings Affect Noise of Semiconductor Lasers
PASADENA, Calif. -- Researchers at the California Institute of Technology's department of applied physics have found a way to manipulate the noise intensity of a semiconductor laser using fiber Bragg...
High-Power Lasers Send Electrons Flying
PALAISEAU, France -- Scientists from four French and one British laboratories are using high-energy, short-pulse lasers to observe electron acceleration corresponding to an energy gain of 1.6 MeV in...
Holography Accurately Measures Velocity
WEST LAFAYETTE, Ind. -- Scientists at Purdue University have developed a convenient method for measuring the velocity of an object. It could prove particularly useful for remote sensing in...
Light and Sound Reveal Gas Leaks
ANN ARBOR, Mich. -- Automakers are keeping an eye on a technique that uses laser light to detect gas leaks in engine and exhaust parts. Hermetic containers traveling down an assembly line have to be...
Mid-IR Lasers Offer Advantages
Scientists from the Naval Research Laboratory in Washington and Hughes Research Laboratory in Malibu, Calif., reported that a vertical cavity surface-emitting laser (VCSEL) offers a number of...
Moon's Measure Is Old Stuff
AUSTIN, Texas -- When a reporter from the London Daily Telegraph and, later, another from the British Broadcasting Co. phoned Peter Shelus, an astronomer at the McDonald Observatory, to ask about his...
Optics Test Could Affect Future Microchips
A recent test of optical coatings at MIT may lead to increased interest in solid-state light sources for next-generation microchip lithography. MIT staff scientist Vladimir Liberman conducted the...
Fiber Optic Probes Improve UV Raman Spectroscopy
Raman spectroscopy has emerged as an important tool in determining analytical and structural information concerning low concentration aqueous biomolecules. However, many samples require in vivo or in...
Raman Spectroscopy Detects Herbicides in Water
Raman Spectroscopy Detects Herbicides in Water ANN ARBOR, Mich. -- Researchers at the University of Michigan have employed Raman spectroscopy to measure two herbicides in water. The herbicides,...
Single-Mode Tunable Laser Backs up Optical Networks
KISTA, Sweden -- Researchers have designed a semiconductor laser tunable in the erbium range that could replace more than 40 conventional fixed-wavelength lasers in dense wavelength division...
Technique Lifts Shadows Surrounding Turbulence
LOS ANGELES -- A new imaging technique could lead to a better understanding of nonlinear relationships and fiber optic communication by studying fluids. Physicist Steve Putterman at the University of...
UV Spectroscopy Gauges Sea Salt
PADOVA, Italy -- Ultraviolet absorption measurements provide a precise gauge of sea water salinity, an important gauge of ecological health, according to marine researchers here. Measuring sea...
Laser Vision Aids Robotic Welders
PARIS -- Shipbuilding plants have sought welders with top-notch skills for years. Now, thanks to photonics, a new breed of welder -- the robotic kind -- could rival humans in expertise and...
IR Imaging Technology May Rival X-Ray
Doctors have relied on x-ray technology for more than a century to diagnose a range of ailments, from broken bones to tumors. Though it is still an indispensable tool, many physicians remain leery of...
light speed
No Bones About It: Lawrence Livermore National Lab Has a Mammoth Problem
For the second time in four months, scientists and government officials halted construction at Lawrence Livermore National Laboratory, site of the proposed National Ignition Facility. This time, crews trenching for electrical utilities at the site stumbled on the remains of a mammoth, a species extinct for at least 10,000 years. The hair-covered elephantlike mammals, marked by their long,...
ESC Buys out Applied Optronics
YOKNEAM, Israel Medical laser giant ESC Medical Systems Ltd. has subsumed a smaller laser company, Applied Optronics Corp. of South Plainfield, N.J. ESC officials expect that the acquisition...
Rockwell Eyes Digital Imaging Market
NEWPORT BEACH, Calif. -- Rockwell Semiconductor Systems has entered the battle for OEM digital imaging market share armed with five new sensors and a history of military and space imaging solutions....
Optical Materials Market Growth Predicted
The Business Communications Co., a market research firm based in Norwalk, Conn., has released a review of the optical materials and engineering industry, projecting an average annual growth rate of...
OSA and SPIE Seek Closer Ties
WASHINGTON -- Last month, the presidents of the two largest photonics societies asked their members what they thought about intersociety collaboration. So far, they report, the responses have been...
Coherent Grabs at Telecom Pie
SANTA CLARA, Calif. -- Hoping to grab part of the $2 billion suppliers' market to the optical communications industry, Coherent Inc. has entered into a joint venture with Fiber Optics Network...
Businesses That Play Together Stay Together
ANY COMPANY, USA -- Bowling and good business practices have more in common than the thrill of competition. In business, competition means that only the strong survive. While this is great for a...
Rule Changes Encourage Partnering
The US Department of Commerce's National Institute of Standards and Technology has amended rules that govern the Advanced Technology Program to encourage the partnering of large and small companies....
Zeiss Provides Satellite Optics
Optics manufacturer Carl Zeiss has secured a DM 18 million contract to build the optics for three Meteosat 2 satellites. The optics are under construction at the company's' Oberkochen, Germany,...
Accent on Applications
Multiplexed Sensors Monitor Bridge Structure, Materials
The Taylor Bridge, which spans the Assiniboine River west of Winnipeg, Man-itoba, Canada, is a "smart structure." The two-lane 165.1-m bridge is outfitted with 66 fiber optic sensors and leading-edge...
Camera Catches Invisible Fires
Anyone would agree that an undetected, uncontrolled fire is a menace that leaves disaster and destruction in its wake. When the fire happens to be invisible, as is the case with hydrogen fires,...
Pitch-Tracking System Provides Rare Insight
NBC's all-star commentator lineup of Joe Morgan, Bob Costas and Bob Uecker had an advantage when calling each game of the 1997 World Series between the Florida Marlins and the Cleveland Indians....
Modular Detectors Advance Protein Crystallography
The change of a single atom on a protein that regulates the molecular reading of our genetic code can trigger the onset of cancer. To learn how these and other molecular processes work, scientists...
Presstime Bulletin
Ball Aerospace and COM DEV Launch Start-Up
COM DEV International, based in Cambridge, Ontario, Canada, and Ball Aerospace & Technologies Corp. in Boulder, Colo., have formed Laser Communications International to capitalize on the...
Corning and FiberCore Embroiled in Patent Dispute
Corning Incorporated has filed a lawsuit against FiberCore Inc., claiming the company violated one of its optical fiber patents. Corning filed suit in the US District Court in Worcester, Mass., on...
Hubble Telescope Reveals Jupiter's Auroras
Scientists have known that Jupiter, like Earth, has auroras at its poles. Now, new instruments aboard the Hubble Space Telescope and a specially designed filter have enabled University of Michigan...
US Government Opens Advanced Technology Program
President Clinton and Commerce Secretary William M. Daley have announced the opening of the first round of competition for the US Department of Commerce's annual Advanced Technology Program. The...
R&D Increases Anticipated in 1998
After years of stagnation, funding for R&D in the US may increase this year, according to Battelle, a technology research organization in Columbus, Ohio, and R&D Magazine. They predict...
Avionics Looks to Photonics to Watch Turbulent Skies
When commercial flights run into turbulence, the result is usually nothing more than spilled drinks and jostled nerves. However, as the recent incident on United Airlines Flight 826 revealed,...
Products
FIBER OPTIC COMPONENTS
Fiber Optic Center Inc. is now offering a line of precision fiber optic components from UK-based Europlus. Products include connector adapters, board mount device receptacles, adapter safety covers for lasers, adapter caps for test sets, dust caps with chains, bare fiber adapters, laser and pigtail housings, splice holder clips, waterproof bulkhead housings, connector boots and fiber organizers....
Fiber Optic Center Inc.
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FIBER OPTIC SWITCH
DiCon Fiberoptics Inc. has released single-mode 1 3 2 and 2 3 2 fiber optic switches that change state in 10 ms with less than 0.8-dB insertion loss on all paths. Prism switches are designed for...
DiCon Fiberoptics Inc.
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IMAGE ACQUISITION
Synoptics Ltd. has improved its frame grabber boards and added a new 32-bit version of the Acquis image acquisition software to create more versatile image acquisition systems for the PC. The 32-bit...
Synoptics Ltd.
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CAMERA SOFTWARE
Euresys s.a. has developed the EasyCam application software, which works directly with the EureCard Domino Maxi and Domino Mini to customize camera interfaces. It also works with monochrome cameras...
Euresys SA
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PCI FRAME GRABBERS
The Matrox Imaging Products Group has unveiled a family of high-performance PCI frame grabbers intended for lower-cost vision applications. Fully programmable, the Meteor-II series is designed to...
Matrox Imaging
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MINI CCD CAMERA
Toshiba America Information Systems Inc. has upgraded its Model IK-M43A miniature CCD camera to fit standard C-mount lenses without the use of an adapter. Applications include microscopy, machine...
CANON MEDICAL COMPONENTS U.S.A., Video Sensing Devices
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PCI INTERFACE
The PIXCI-D PCI Interface from EPIX Inc. is designed to be used with Hitachi KP-F100 and KP-F110 10-bit digital cameras. The PIXCI-D image transfer board receives 10-bit pixel data from the digital...
EPIX Inc.
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VIDEO SOFTWARE
Video Savant 3.0, the latest offering from Io Industries, acquires real-time video clips and stores them to memory or disk. An interface is also provided for viewing video clips. Real-time standard...
IO Industries Inc.
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AUTOFOCUS MICROSCOPE
Sony Electronics Inc.'s Factory Automation Div. has developed the optics unit and controller for the SAF-302 high-speed autofocusing microscope. The instrument has autofocusing speeds from 0.2 to 0.7...
Sony Electronics Inc., Visual Imaging Products Group
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CHEMICAL ADDITIVES
A new line of fluorescing chemical additives from UV Process Supply Inc. can be used in nondestructive testing, marking, tracing and inspection when mixed with inks, paints and coatings. The...
UV Process Supply Inc.
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GRAPHICAL INSTRUMENTATION SOFTWARE
National Instruments has released Version 5.0 of its LabVIEW graphical instrumentation software. Enhancements to the system include instrument wizards, ActiveX container, automation servers,...
National Instruments Corp.
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TEMPERATURE TRANSDUCER
Everest Interscience Inc. introduces its Model 3000.3GH Infrared Temperature Transducer, which provides precision temperature readings from 222 to +2000 °F and a response time of 100 ms. Lower...
Everest Interscience Inc.
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URETHANE SYSTEM
Master Bond Inc. has developed an optically clear, room-temperature curing, two-component urethane elastomer for bonding, sealing, coating, potting and encapsulation applications. The EP30D-14 has a...
Master Bond Inc.
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DIODE LASER SYSTEM
Renishaw plc has introduced its 780-nm diode laser system, which was designed specifically for low-fluorescence Raman spectroscopy. Features include true single-mode operation, >20-mW...
Renishaw PLC, Spectroscopy Products Div.
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COMPACT NEUTRAL DENSITY FILTER WHEEL
Newport Corp. is offering a six- and 12-position filter wheel that was designed for 1-in. neutral density filters and other optical components. It provides toolless filter wheel change and optical...
MKS/Newport
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OPTICAL RECEIVERS
The PR-X series of optical receivers from Femto is being distributed by Laser Components GmbH. These plug-and-play devices are compatible with common optomechanical systems and are equipped with...
Laser Components Germany GmbH
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SAPPHIRE OPTICS
Meller Optics Inc. is providing a variety of custom-fabricated sapphire optics, including front-surface lenses and domes, carrier discs, UV cell windows, and lenses for Er:YAG and ruby laser systems....
Meller Optics Inc.
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ZOOM LENSES
The pcZOOM family of computer-controlled, motorized zoom lenses affords complete computer control of a machine vision camera's field of view. Offered by Graftek Imaging Inc., the lenses are suitable...
Graftek Imaging Inc.
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HANDLING SYSTEM
Ocean Optics Inc. is offering the FIAlab-1000 MiniSipper, a low-cost handling system intended for rapid, quantitative analysis of solutions. It can be coupled with the company's miniature fiber optic...
Ocean Optics - Part of Ocean Insight
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PHOTON COUNTING
The Time Harp 100 single-photon counting board from PicoQuant GmbH is a complete system for time-resolved measurements on a single PC card. The solid-state design cuts costs, improves reliability and...
PicoQuant GmbH
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POLARIZATION MICROSCOPY
The LC-PolScope from Cambridge Research & Instrumentation Inc. is a quantitative imaging system for microscopes that measures and displays the birefringent structure in transparent objects. It...
PerkinElmer
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UV SIMULATOR
The Model 601 Multiport UV Simulator from Solar Light Co. incorporates six independent outputs, allowing for simultaneous dosing and monitoring at adjustable intensity levels. Applications include...
Solar Light Co. LLC
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VACUUM GATE VALVE
The Throttlemaster vacuum gate valve from Kurt J. Lesker Co. controls a vacuum gate to any position with an accuracy of ±0.002 in. The user positions the gate manually during process development from...
Kurt J. Lesker Co.
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