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Photonics Spectra - March 2003
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Issue Library
Features
Simulation Tools Assess Laser Communications System Performance
Bidirectional laser communications among ground and air- and spaceborne platforms holds promise of extremely high bandwidth data transfer in commercial and military applications. One challenge still to be met is optical-beam degradation from atmospheric wavefront distortion. Adaptive optics could help solve the problem, but identifying and understanding the parameters that define system...
Fiber Bragg Gratings Filter WDM Signals
Fiber Bragg gratings are versatile wavelength filters for multiplexing and demultiplexing wavelength division multiplexing (WDM) signals. They also can compensate for chromatic dispersion that can...
Multiwavelength Lasers Simplify WDM Networks and Applications
Mode-locked lasers are common tools for producing short pulses in the time domain, including telecommunications applications at multigigahertz repetition frequencies that require tunability in the...
Making Machines See
Today, machine vision is associated with industrial automation, where vision systems help with the manufacture and inspection of products. Innovations are making machine vision solutions smaller,...
Photonic Component Manufacturers Move Toward Automation
Laser diodes are everywhere. But as the semiconductor laser has evolved to yield a family of robust, reliable devices, manufacturing these devices confronts the existence of multiple proprietary...
Tracking Nanoposition Advances
What works in the microworld very often doesn’t work in nanopositioning applications such as nano-imprinting, scanning microscopy, microlithography and automated alignment. End users will often...
Modular Diode Lasers Stack Up as Quality Beam Tools
Diode lasers with total power ranging from several hundred watts to more than a kilowatt began to play an important role in materials processing applications in the mid-1990s. The German government...
Tech Pulse
Nanoholes Improve Single-Molecule Analysis
Researchers at Cornell University in Ithaca, N.Y., have developed a nanostructured sample holder that enables the analysis of single molecules at realistic concentrations. The device, which features arrays of tiny holes in a metal film, has potential for applications in single-molecule enzymology and in drug discovery. Subwavelength holes in an aluminum film enable researchers to observe the...
Liquid Enables Tunable Microlenses
Microlenses play an important role in numerous photonic applications, including imaging, optical data storage and telecommunications. A liquid device developed at Lucent Technologies Inc.'s Bell Lab...
Nanowires Form Electrically Driven Laser
A team of scientists at Harvard University in Cambridge, Mass., has developed an electrically driven laser based on freestanding semiconductor nanowires. The laser is relatively inexpensive to...
Fiber Laser Produces 4.1 kW
Fiber lasers are becoming competitive with traditional flashlamp- or diode-pumped solid-state lasers in applications such as remote sensing, medical surgery and materials processing. Researchers at...
Doped Glass Enables Tiny Bar Codes
The ability to label chemicals, biological samples, explosives and currency with invisible ID tags would lead to numerous security and safety applications. Now scientists at Corning Inc. in Corning,...
Optimal Pulse Control Deciphered
Ultrafast laser pulses can control reactive pathways in chemicals. In a proposed strategy known as adaptive optimal laser pulse control, an algorithm iteratively determines the combination of laser...
GaN-Free LEDs Offer UV Emission
Researchers at NTT Basic Research Laboratories and NEL TechnoSupport, both in Atsugi, Japan, have obtained 350-nm emission from a GaN-free, AlGaN single-quantum-well LED. They presented their work in...
Single-Active-Layer Organic LED Yields 16,000 cd/m2
By incorporating a 6-nm-thick layer of Teflon, a single-active-layer organic LED fabricated at Tsinghua University in Beijing displays a brightness of 16,000 cd/m2 and a luminous efficiency of 0.85...
Integrating Cylinder Improves Smoke Detector
At Gunma University in Kiryu, Japan, researchers have demonstrated that the use of an integrating cylinder as a light collector improves the sensitivity and linearity of optical smoke detectors. They...
Laser Helps Produce and Power Microtools
A team of scientists at Nagoya University in Japan has reported the fabrication of an optically driven microneedle and microtweezers that are suitable for use in aqueous environments. The team...
Tunneling Electrons Stimulate Individual Molecules
Using a scanning tunneling microscope, a research team at the University of California, Irvine, has induced photoemission in individual porphyrin molecules on an aluminum oxide film, yielding...
light speed
Photonics West Stays the Course
If trade shows are indeed barometers of an industry's health, this year's Photonics West indicates that the photonics industry is in a state of cautious optimism. When this will translate into increased capital spending, however, is the question still to be answered. Held in January in San Jose, Calif., the conference and exhibition sponsored by SPIE actually dipped a bit in attendance from...
Computed Tomography Questioned for Lung Cancer Screening
A new study from Johns Hopkins School of Medicine in Baltimore is questioning the value of computed tomography scans for lung cancer screening. Published in the Jan. 15 issue of the Journal of the...
Coherent Acquires Positive Light
Coherent Inc. of Santa Clara, Calif., remains in acquisition mode with the announcement that it has signed a definitive purchase agreement to acquire Positive Light Inc., a Los Gatos, Calif.-based...
Canada Supports Development of All-Photonic Network
The Natural Sciences and Engineering Research Council of Canada has awarded McGill University of Montreal and its project partners a five-year, $7 million grant to develop a next-generation...
Agilent Acquires Assets of CMOS Imaging Developer
Agilent Technologies Inc. of Palo Alto, Calif., has purchased the intellectual property and certain other assets of CMOS imaging technology developer Pixel Devices International Inc. of Sunnyvale,...
Companies Collaborate on MEMS Technology
Fairchild Semiconductor of South Portland, Maine, will supply OMM of San Diego with MEMS wafers for optical networking applications. The wafers are expected to provide higher yield and to lower the...
Molex Purchases Optical Shuffle Technology
Molex Inc. of Lisle, Ill., has acquired certain assets of Schott Optovance of Southbridge, Mass., including its Optical Shuffle and LightDealer products. The Optical Shuffle is a tool for...
Alliance Seeks to Automate Optical Component Manufacturing
Unitek Miyachi Corp. of Monrovia, and Phasebridge Inc. of Pasadena, both in California, have signed an agreement to commercialize photonics assembly technology. Phasebridge will license elements of...
CyOptics Acquires Manufacturing Plant
InP device supplier CyOptics Inc. of Waltham, Mass., has purchased the optical component packaging capabilities of Cenix Inc. of Irvine, Calif. The acquisition includes the equipment, inventory and...
UK University Wins Grant for Optoelectronics Research
The Engineering and Physical Science Research Council of the United Kingdom has awarded a four-year, $600,000 grant to the Opto-electronics Group of the University of Wales, Bangor, to support its...
Research into Helmet-Mounted Systems Continues
Universal Display Corp. of Ewing, N.J., has received a two-year, $729,996 Small Business Innovation Research Phase II contract from the US Army to advance its conformable and transparent display...
Accent on Applications
Diode Laser Removes and Seals Grout
To ease the removal and sealing of industrial grout for ceramic tile, Jonathan Lawrence of the School of Mechanical and Production Engineering at Nanyang Technological University and his colleagues...
MIT Investigates Photonic Uniforms
Unmanned air vehicles such as the Predator and Global Hawk enable soldiers to engage an enemy from a safe distance. However, as impressive as these technologies may be, it still takes ground troops...
Fiber Sensor Detects Lithium
With its ability to readily accept and discharge electron carriers, lithium is one of the most common species of elements in rechargeable power cells. When it comes in contact with water, however, it...
Optical Gels Come of Age
Optical gels were originally designed to improve return loss in mechanical splices of single-mode fiber, but they also have proved to be effective at index matching for a variety of optical...
Presstime Bulletin
Hot Electron Transfer Solar Cells Show Promise
Results of a study published in the Feb. 6 issue of Nature suggest the feasibility of photovoltaic cells based on a new device structure that captures energetic electrons generated by photon absorption in photoreceptive dyes and that transfers them through an ultrathin metal film into an inexpensive polycrystalline semiconductor. Although the initial devices, demonstrated by Eric W. McFarland and...
Single-TEC Lasers Display Low Drift
Japanese researchers at Yokohama R&D Laboratories in Kanagawa and Fitel Photonics Laboratories in Chiba report in an upcoming issue of IEEE Photonics Technology Letters highly stable laser...
Teleportation Opens Door to Repeaters
A quantum teleportation experiment at Universität Wien in Vienna, Austria, has confirmed the feasibility of procedures that involve freely propagating qubits and quantum repeaters. The results of the...
Lab Experiment Probes Photon Charge
Researchers at Brookhaven National Laboratory in Upton, N.Y., have devised a new apparatus for measuring the upper limit on the charge of the photon. The approach, which was described in the Jan. 1...
Dual-Wavelength Pumping Tested
A team from Universidade Federal de Pernambuco in Recife, Brazil, CETUC-PUC Rio in Rio de Janeiro, Brazil, and Acreo AB in Stockholm, Sweden, presented its findings on a dual-wavelength pumping...
Products
ALL-FIBER INTERFEROMETER
Martin, Froeschner & Associates has announced an all-fiber Doppler velocity interferometer system for any reflector. It has no mirrors, lenses, etalons or free-space beams, and it can detect Doppler shifts in light reflected from moving surfaces and the velocity of the surface to absolute accuracies of 0.1% with subnanosecond resolution. The system includes a high-purity laser illuminating...
Martin, Froeschner & Associates
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RANGEFINDER RECEIVER
Analog Modules Inc. has unveiled a hybrid eye-safe laser rangefinder receiver optimized for ultrahigh sensitivity at 1550 nm. The Model 758A can operate from 1.0 to 1.6 µm and processes pulse...
Analog Modules Inc.
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METHANE DETECTOR
Designed for use in semiconductor manufacturing and online process control, the MTO-1000-CH4 methane detector offered by Tiger Optics LLC prevents photomask damage by detecting fugitive hydrocarbons...
Tiger Optics LLC
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SILICON PHOTODIODES
Hamamatsu Corp. has introduced silicon photodiodes that cover the 190- to 1100-nm spectral response range for spectrophotometry and optical measurement applications. The S8745 and S8746 have active...
Hamamatsu Corporation
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INTEGRATED PHOTODETECTOR
A line of high-speed integrated tap photodetectors with in-line signal acquisition has been unveiled by Santec Corp. The HS-IPD allows real-time BER monitoring without interrupting or degrading the...
Santec USA Corp.
MEMS METROLOGY
Veeco Metrology Group has added dynamic MEMS measurement capability to its Wyko NT1100 optical profiler. This option allows three-dimensional characterization of microdevices as they actuate for...
Veeco Instruments Inc.
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PHOTODIODE ARRAY
Advanced Photonix Inc.'s 100-element linear photodiode array features a mask that blocks any light outside the pixels for improved spatial fidelity and resolution. The device is directly hybridized...
Advanced Photonix
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TELECOM TESTING
Exfo Electro-Optical Engineering Inc. has introduced an instrument for commissioning and lighting channels in DWDM networks. The FTB-9310 channel selector allows network operators to select and...
EXFO Inc.
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FIBER INSPECTION
Designed for optical component manufacturers, the VF-20 fiber inspection system from Arden Photonics Ltd. checks the quality and end angle of cleaved or polished optical fibers. It is based on the...
Arden Photonics Ltd.
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IMAGE PROCESSORS
A line of real-time digital image processors designed to improve video quality has been launched by National Semiconductor Corp. Suitable for use in digital still cameras, the LM9704 supports 8 fps...
National Semiconductor
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VISION SOFTWARE
More vision tools have been added to Cognex Corp.'s VisionPro+ PC-based machine vision tools. Geometric measurement tools can be used to gauge parts and to measure the distance between circles,...
Cognex Corp.
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DIGITAL CAMERA
A digital FireWire camera capable of producing 1280 x 1024 images at 30 fps has been released by Point Grey Research. The Scorpion features Symagery Microsystems' VCA1281M progressive-scan CMOS...
Teledyne FLIR Integrated Imaging Solutions
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DIGITAL CAMERAS
Miniature machine vision Camera Link cameras are available from illunis LLC for applications including high-speed wire bonding. The MMV-330 incorporates the Kodak KAI-330, which provides 120 full fps...
illunis LLC
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OPTICAL RECEIVERS
Laser Diode Inc. offers PINFET optical receivers for sensor systems and telecommunications applications. The LDPF and LDPW series detectors have low-profile packages with industry-standard pin-outs...
OSI Laser Diode Inc.
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IMAGING SOFTWARE
Epix Inc. provides Linux support for its PIXCI imaging boards. The XCLib library for Linux 2.4.8 and later kernels supports Intel platforms and enables users to customize machine vision, motion...
EPIX Inc.
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THERMAL CAMERA
Edmund Industrial Optics has released a long-wave thermal camera for industrial and security applications. The heat-sensing device is sensitive from 8 to 14 µm and has a dynamic range of 66 dB....
Edmund Optics Inc.
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CMOS AREA-SCAN CAMERA
Basler Vision Components has added the A504k to its A500 series CMOS area-scan cameras. The device provides up to 500 fps at 1280 x 1024-pixel resolution. Its area-of-interest function enables faster...
Basler AG
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RECIRCULATING CHILLERS
Lytron Inc. has improved the temperature stability of its Kodiak recirculating chillers to a typical ±0.05 °C. The temperature stabilization time also was reduced fivefold, and the response...
Boyd Corp.
POWER SUPPLY
HiTek Power has developed a power supply for YAG lasers and other intense pulsed-light systems. The SM10 10-W simmer module gets its power from a 24-VDC supply, making it well-suited for medical...
LHV Power Corp.
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OPTICAL OSCILLATORS
Photonics Industries International Inc. has announced the DS series diode-pumped optical parametric oscillators. Based on the company's intracavity frequency conversion technology, the oscillators...
Photonics Industries International Inc.
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WAVEFORM GENERATOR
The Model 632 true arbitrary waveform generator is available from Berkeley Nucleonics Corp. The company says the 31.5-MHz device, which has fully synchronized outputs, eliminates phase shifts and...
Berkeley Nucleonics Corporation
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VISION SOFTWARE
National Instruments has released software for developing machine vision applications such as in-line parts inspection and quality control monitoring. Vision Builder for Automated Inspection...
National Instruments Corp.
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Ti:SAPPHIRE LASER
The Model CPA-2061 amplified Ti:sapphire laser system from Clark-MXR Inc. includes a telecom diode-pumped fiber oscillator, a pulse stretcher, a regenerative amplifier, a kilohertz Nd:YAG pump laser,...
Clark-MXR Inc.
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ENERGY MEASUREMENT
Ophir Optronics Inc. has introduced a pyroelectric head with a high-damage-threshold coating for 193-nm radiation. The PE50HD, designed for energy measurement of excimer lasers, is calibrated for 157...
MKS Ophir, Light & Measurement
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LASER DRIVER
A dual-mode laser driver that has high current stability, power efficiency and low noise is available from Analog Technologies Inc. The device, for driving high-current diode lasers, can be used to...
Analog Technologies Inc.
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LASER ABLATION SYSTEM
The LSX-500 laser ablation system is designed for direct analysis of solid samples using ICP-AES and ICP-MS. This 266-nm system from Cetac Technologies can ablate high-purity fused silica, calcite...
Teledyne CETAC Technologies
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INDUSTRIAL LASER MARKING
Laser marking systems in either CO2 or Nd:YAG configurations have been introduced by thinklaser. They operate at 1064 nm and produce 35 to 100 W. Besides metals, the Nd:YAG processes coated metals,...
Thinklaser Ltd.
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MICROVIA DRILLING
The Model 5430 UV laser microvia drill system from Electro Scientific Industries Inc. is suitable for high-volume integrated circuit packaging. It incorporates high-power diode-pumped lasers with...
ESI - Electro Scientific Industries
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LED RINGLIGHT
The Clar LED low-angle ringlight has been released by StockerYale Inc. It uses chip-on-board technology to provide low-angle diffuse lighting. Measuring 96 x 39 mm, the illuminator is suitable for...
ProPhotonix Ltd.
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INFRARED LEDs
A line of discrete IR LEDs for high-power, high-speed emission in wireless connectivity, imaging systems and analysis equipment has been unveiled by Ledtronics Inc. The devices use semiconductor...
LEDtronics Inc.
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LED BACKLIGHTS
The BL series of backlights from Spectrum Illumination LLC are designed for applications that require high output and even illumination over a large area. The backlights range from 2 x 4 in. to 12 x...
Spectrum Illumination
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OPTICAL SOFTWARE
Photon Engineering LLC has released version 2.1 of Fred optical engineering software for simulating the propagation of light. The software offers real-time photorealistic rendering and model editing...
Photon Engineering LLC
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ASPHERIC LENSES
SwissOptic AG manufactures customized optical components such as aspheric lenses, off-axis aspheric lenses and free-form optical surfaces with its robot-supported Advanced Lens Polishing System....
SwissOptic AG
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LASER OPTICS
CaF2 optics for use in excimer lasers in the semiconductor industry are available from Berliner Glas. The company produces the optics in sizes up to 4 in. and says that their superior microsurface...
Berliner Glas GmbH
VIBRATION CONTROL
Kinetic Systems Inc. has released the Model 2212, a portable vibration control system with flatness of ±0.004 in. over 24 x 24 in. The vibration-free platform is designed to enhance the...
Kinetic Systems Inc.
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LINEAR STAGES
The SDS series linear translation stages from Newport Corp. have low profiles for OEM integration into semiconductor equipment. The stainless steel devices have profiled bearing ways that provide...
MKS/Newport
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ROTARY STAGES
Aerotech Inc.'s ADRT series direct-drive rotary stage provides angular positioning and velocity control. They are suitable for applications such as high-speed laser machining and precision wafer...
Aerotech Inc.
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LASER-SCAN MICROSCOPES
A new version of the LSM 5 confocal laser-scanning microscope has been released by Carl Zeiss Jena GmbH. It offers quantitative data with collocalization coefficients and correlation parameters,...
Carl Zeiss Microscopy LLC
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RAMAN MICROSPECTROSCOPY
Symphotic TII Corp. has introduced the Nanofinder Raman confocal microspectroscopy system developed by Tokyo Instruments Inc. Designed for low-level signal detection, the system offers 200-nm lateral...
Symphotic TII Corp.
MASK SYSTEM
Corning Tropel Corp.'s UltraFlat 200 mask system measures the flatness of polished photomasks, coated or uncoated. The system uses near-normal-incidence interferometry and proprietary phase-shifting...
Corning Tropel Corp.
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THERMAL ANALYSIS
The ThermaCAM S60 IR system from Flir Systems was developed to identify faulty components and thermal anomalies in devices and processes so as to prevent critical failures or damage. The device...
FLIR Systems
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WAFER INSPECTION
An automated inspection system for 200- and 300-mm wafers has been released by Rudolph Technologies Inc. The WaferView provides macrodefect inspection of wafer surfaces at throughputs of >100...
Rudolph Technologies Inc.
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IMAGE ANALYSIS
The IA32 image analysis system from Leco Corp. can determine nodularity, coating thickness, grain size, porosity, particle size and fiber length. It includes Windows-based software, and single-sample...
LECO Corp.
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LASER DIODE TESTING
The OMH-6780B and 6790B power/wave heads measure up to 10 W with wavelength accuracy ±0.2 nm. ILX Lightwave Corp. has designed these devices for use with its OMM-6810B optical multimeter...
Newport - ILX Lightwave, Photonics
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dBCheck Power Meter
Coherent Inc. offers the industry's widest selection of test and measurement capabilities, including standard instruments, detectors and custom systems. We offer products for power and energy...
Coherent Inc.
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High-Performance Solid-State Lasers
Edmund Industrial Optics has added a new line to its popular solid-state lasers. These high-performance solid-state lasers feature an extremely stable and quiet laser output in a compact,...
Edmund Optics Inc.
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OMH-6780/6790 Power/Wavelength Measurement
New power/wave heads from ILX Lightwave simultaneously measure power up to 10 W and wavelength within 0.2 nm for pump laser diodes. The OMH-6780B or -6790B power/wave heads with our OMM-6810B optical...
Newport - ILX Lightwave, Photonics
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DPSS 473-nm Microchip Blue Laser
Laser users have long awaited a compact blue laser that could replace bulky, inefficient, high-maintenance and high-priced gas lasers. Lee Laser's new Model LMC-473-30 Microchip Blue Laser is a...
Lee Laser Inc. (See Coherent Inc.)
Custom Lasers and Custom Wavelengths
When it comes to designing and manufacturing tunable lasers for your application, turn to the world's leading supplier of tunable lasers for test and measurement -- New Focus. Let our...
Newport - New Focus
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Laser Measurement Catalog
Ophir Optronics' new four-color laser measurement catalog has been updated for 2003. It includes new detectors for radiometric and photopic measurements, as well as new, improved pyroelectric...
MKS Ophir, Light & Measurement
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Infrared Viewing Devices
The IRV1, IRV2 (shown) and IRVC are three new models of infrared viewing devices from Power Technology Inc. These competitively priced units are suitable for a variety of applications requiring the...
Power Technology Inc.
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