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Veeco Instruments Wins Circle of Excellence Award
Responding to the needs of microelectromechanical systems (MEMS) manufacturers for an effective and dynamic measurement technique, Veeco Instruments Inc. of Tucson, Ariz., has developed the Wyko Dynamic MEMS measurement system to control the fabrication process and to ensure device quality. The system comprises an optical profiler -- a white light interferometer -- an additional strobed LED illumination source, drive/synchronization electronics and proprietary analysis software to enable...
Photonics Spectra, January 2004
Violet Diode Lasers See Broadened Application Base
The recent availability of GaN-based laser diodes, nurtured by a strong and flourishing LED market, has opened up a host of new applications. The optical storage market, essentially the raison d’être for this technology, is leading the way with a...
Photonics Spectra, January 2004
Visx Wins Circle of Excellence Award
The CustomVue laser wavefront system is an ophthalmic laser surgery device that combines new photonics technologies to provide personalized laser vision correction for both nearsightedness and astigmatism, tailoring a unique correction for every...
Photonics Spectra, January 2004
In Search of the Optimal Objective for 157 nm
In the never-ending quest for the optimal objective for microlithography wavelengths, engineers have worked on ways to improve the aberration and birefringence correction of 0.85-NA Newtonian objectives used in microlithographic resist development....
Photonics Spectra, December 2003
Lasers Target Chip Fabrication
In semiconductor manufacturing, the drive to pack more functionality into ever-smaller spaces will ultimately fuel more aggressive chip designs, necessitating use of new low-k dielectric materials, wafer-level packaging, increasingly complex device...
Photonics Spectra, December 2003
Machine Vision Bolsters Quality Control
Machine vision technology has long played a key role in pharmaceutical manufacturing, particularly at the packaging stage. But now, as the Food and Drug Administration (FDA) bar-code regulation raises packaging standards, drug manufacturers are...
Photonics Spectra, December 2003
Mass Spectrometry Helps Drug Manufacturers Meet New Demands
Quality control in drug manufacturing has always been important: After all, if something goes wrong, lives could be on the line. Accordingly, new emphasis is being placed on pharmaceutical quality control, especially in light of a pending regulation...
Photonics Spectra, December 2003
MEMS Are on the Move in Europe
Nanotechnology may be the latest buzzword, but its predecessor — microtechnology — has yet to reach its full potential. Although much hype is being made of the idea of nanomachines, researchers around the world are still trying to make micromachines...
Photonics Spectra, December 2003
Micromachining Medical Devices: Finding the Right Remedy
Emerging challenges in micromachining include the need to process materials at faster speeds, in a wider range of materials and with greater precision and repeatability, and to micromachine features of increasingly smaller dimensions with...
Photonics Spectra, December 2003
Photonics in the Pharmaceutical Industry
By some estimates, as many as 7000 hospital patients die every year when health workers mistakenly administer the wrong drugs. In response, the Food and Drug Administration (FDA) has set forth a proposed regulation that would require drugmakers to...
Photonics Spectra, December 2003
Process Understanding Promotes Successful Machine Vision
With the advent of graphical programming software, the need to write and debug countless lines of text-based code is no longer an issue in even the most complex multicamera environments. In the pharmaceutical industry, this advanced software can...
Photonics Spectra, December 2003
Pulsed Xenon Lights Help in Drug Tracking
On a pharmaceutical production line, it’s not enough to inspect random samples of material. In response to stringent health and safety standards, such as those being proposed by the Food and Drug Administration, drug companies are seeking to examine...
Photonics Spectra, December 2003
Space-Efficient Symbols Help in Drug Tracking
The benefits that bar coding can bring to the medication administration process are widely recognized. Bar codes provide the most efficient method of identifying the drug, the patient, and the appropriate time and method of administration. But with...
Photonics Spectra, December 2003
CCDs Promise 85 Percent Peak Quantum Efficiency
Although the line between the functionality of CMOS and CCD imaging sensors has blurred for many applications, there are still times when one is a more optimum solution. Consider, for example, higher-performance scientific, astronomical and medical...
Photonics Spectra, November 2003
CMOS Sensors Expand Their Universe
What a difference a year -- or two -- makes with imaging technology. First-generation cell-phone cameras, for example, primarily used CCD sensors, but the cost benefits of CMOS technology, as well as increasing consumer demand for smaller handheld...
Photonics Spectra, November 2003
CMOS Technology Addresses Security Imaging Issues
With increasing global demand for stringent security precautions, the need for high-performance, reliable and cost-effective cameras in both the public and private sectors is on the rise. High-definition video is the new benchmark for video quality,...
Photonics Spectra, November 2003
Deposition Equipment Fine-Tunes Optical Coatings
Over the past few years, the need to pack more telecommunications channels into a given swath of optical spectrum has forced manufacturers to offer deposition equipment that produces less costly and more uniform optical coatings. Although the pace...
Photonics Spectra, November 2003
Diagnostic Laser Beam Measurement
Measurement of spatial beam intensity distribution — a beam profile — and of beam propagation characteristics is an integral part of today’s many high-precision, laser-based applications where beam quality is critical. The basic definitions and...
Photonics Spectra, November 2003
Direct Image Sensor Tackles Color Concerns
When an application demands high-quality color imaging, CCD sensors once were the only alternative, but this is no longer the case for certain applications. Foveon Inc. in Santa Clara, Calif., believes that the key to boosting color imaging...
Photonics Spectra, November 2003
Fiber Optic Connectors: Meeting Polishing Demands
Optical fiber is a good vehicle for high-speed data transmission as long as light transmission is efficient — even across connector assemblies. This translates to a need to polish connector end faces to optimize performance. Increasingly, with the...
Photonics Spectra, November 2003
Holographic Volume Bragg Gratings Stabilize Laser Diode Performance
High-power multimode laser diodes, emitting >1 W per diode, and laser diode arrays, emitting tens or even hundreds of watts, have many important applications, such as medicine, materials processing and pumping solid-state lasers. The market for...
Photonics Spectra, November 2003
Large-Pixel Architectures Aid Radiographic Imaging
Much of the effort in CMOS image sensor development to date has focused on circuit architectures and on fabrication processes for small devices. Typical applications in this category include cell-phone camera modules, Web cameras and video camera...
Photonics Spectra, November 2003
Picking Wheat from Chaff
A missile launches from a remote silo, streaks upward through the clouds, then shoots above the atmosphere. There is no chance to stop the re-entry vehicle from hitting its target unless it can first be identified — picked out from the natural Earth...
Photonics Spectra, November 2003
Sensors Support Low-Light Imaging
One key to customer acceptance of CMOS imagers in the mobile market space is low-light performance. This is often specified in terms of the lowest light level at which the sensor produces an image with a minimally "acceptable" signal-to-noise ratio....
Photonics Spectra, November 2003
Custom Optics Meet the Challenges of 2-D Symbol Applications
The rising popularity of two-dimensional symbols for bar-code applications has increased the need for imager-based bar-code readers. In the past, the only solution for reading these symbols was complex vision systems designed for much more...
Photonics Spectra, October 2003
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