Product Spotlight: OL 770-DMS Display Measurement System

Calibration is the key to make use of light and energy. From scientific labs to aircraft illumination, understanding the power emitted by wavelength is important for work in education and a huge variety of industries. In few instances is this more true than with light displays; simply put, the usefulness of a display system can be measured only in the type and consistency of illumination emitted. For this reason, having a world-class spectroradiometer is paramount. Gooch and Housego has just that with the OL 770-DMS Display Measurement System.

Versatile, technical and intuitive to use, any manufacturer of display units needs the capabilities it features. Quality assurance is the engine by which technology companies run and are measured; to fall short here would often be to lose credibility. The OL 770 Display Measurement System has a wide variety of applicable uses due to its well-honed software and high-level technical abilities. Featuring wavelength accuracy at ±0.5 nm, 16-bit A/D resolution, and polarization error <1%, this spectroradiometer’s sensitivity and facility are nothing short of superb.

Beyond the technical highlights, the OL 770-DMS excels in its level of ease during day-to-day use. This sets it apart from other spectroradiometers in the field. Features such as the ability to automatically store tested data in an Excel™ format or the single-click interface presentation puts your lab’s capacity for information processing at the highest of levels. We’ve designed the system to allow the software it runs off of to work for you, as opposed to having to work to understand it. This means you can easily create customized reports and spreadsheets that are easy to use and are based on the needs of your spectrometric testing.

Included in this package are straight-forward fail/pass parameters that leave no confusion as to test results. Gooch and Housego’s technical prowess and cutting-edge abilities are well known and on full display with the OL 770-DMS. We achieved premier spectroradiometer sensitivity levels by creatively combining a CCD camera with direct viewing optics in our OL 610 CCD Imaging Telescope (one portion of the unit). This state-of-the-art piece of equipment was merged with a multi-channel spectroradiometer, and like magic, OL 770-DMS Display Measurement System was born. For more technical information and pricing, contact the leader in photonics at (800) 899-3171. We have the systems that can take your technical ability and precision to the next level.

Self-Assembling Perovskite Particles Pave the Way for LED Technology

LEDs in the 21st century have easily overtaken 20th century lighting forms, like fluorescent bulbs, in the realm of energy conservation and relative luminosity. The spread of LEDs worldwide is relentless and positive, as their benefits become increasingly well known. As this happens, older modes of lighting, be they household or industrial or commercial, are increasingly being phased out. However, LEDs clearly becoming the light fixture of the future is by no means a reason for the technology to slow down or rest on its laurels. With careful LED testing, we’ve seen that the full potential of light-emitting diodes has not nearly been reached.

A group of researchers from Princeton proved this to be an evident truth quite recently with their pioneering work on perovskite particles.

  • Traditional LED lights, for the most part, are powered by gallium nitride based in silicon with carefully-calibrated energy properties.
  • Perovskite particles are crystalline compounds that can be both super conductive or semiconductive, but their use is just recently being explored in regards to lighting.

The Princeton research team published results in January of this year in Nature Photonics stating that they developed a technique that pushed nano-perovskite particles to, more or less, self amass. This ability could lead to a more viable path forward for perovskite to be used easily in commercial LED settings in the future.

  • Barry Rand, part of the Andlinger Center for Energy and the Environment at Princeton, said about the work, “Our new technique allows these nanoparticles to self-assemble to create ultra-fine grained films, an advance in fabrication that makes perovskite LEDs look more like a viable alternative to existing technologies.”

The self-assembling particles are just one piece of a complex overall chemical structure that looks to refine and invigorate the stability and power capabilities of LED light panels. This could be especially useful as the solar sector continues to need better source materials for absorption and storage.

All of this innovation hinges on one important aspect: the ability for careful and detailed LED testing and calibration. Without the machines and technology to understand the wavelengths as well as their cumulative impact, further LED research would be difficult. But, we do have the calibration technology, and we do have the know-how. Gooch & Housego is at the forefront of this rare and technical scientific headwater. For more information on our products, contact us today at 407-422-3171 or toll-free at 800-899-3171.

Color Temperature Tuning Shows Potential for Alzheimer’s and Dementia Patients

The brain is a complex instrument. Our understanding of the effects of light on the chemistry of this intricate system is surprisingly thin. But, in recent years, both fields, brain science and lighting science, have seen rapid growth. Studies now reveal that light works on everything from PTSD sleep trauma to the moods people have in train stations. Add to this list a recent piece of research that showed the possibility that simply by being exposed to certain light colors and temperatures, the emotional effects of dementia and Alzheimer’s may be dialed back. This is only made possible through accurate LED calibration and ongoing research.

In method, the study was straightforward. Researchers installed lighting, as well as timers for certain color displays, in a senior center located in Sacramento, California. Here is the concept by the numbers:

  • Illumination was tuned carefully to 2700 kelvin (k).
  • Short-wave blue spectrum light was used for patient’s rooms in the morning.
  • Energy costs, just from switching to LEDs for the study, were seen to be reduced by some 68%.
  • Behaviors associated with the diseases (agitation, anxiety, etc.) were reduced by 41% over the course of the study.

This improvement in the mental health of the elderly patients was made possible through careful control of light levels. It is also something of a novel concept; until very recently, LED lighting was not so easily programmable for color changes. That has changed rapidly lately, and as study into the effect of LEDs on the mind continue to press on, the market and need for easily-programmable LED color lighting could grow.

Nurses and resident caregivers were allowed to control the lighting system based on what they were seeing at the moment, although the entire system ran off of a formal script. This light pattern script was devised to change both the intensity of the LED lights, as well as their color, based on time of day. Researchers have long known that melatonin and circadian rhythms were attuned by lighting patterns, but only recently has our ability to so specifically fine-tune the artificial lighting around us come of age.

This was a small study done by the Department of Energy (DOE), and the researchers pointed out that much larger-scale investigation on LED calibration and light wave brain interaction is needed. But, as with many studies of late, the small sample results have been so explosively positive that hope in the field of dementia and Alzheimer’s study is high that LED systems could prove to be a powerful medicine. For more information on LED calibration, contact the experts at Gooch & Housego at 407-422-3171 or toll free at 800-899-3171.

Insect Eye Technology Allows for Smaller Devices with Greater Precision

The visual ability of insect’s eyes, most renowned in the compound eye types found in advanced arthropods, has always perked the human curiosity. Tiny and multi-faceted, hyper-thin insect eyes have a range of motion and resolution in an impossibly compact size. For years, scientists have struggled with ways to replicate some form of this ability, and a microscopic two millimeter mosaic camera developed by the Fraunhofer Institute for Applied Optics and Precision Engineering IOF in Jena, Germany, may have come quite close. Tested to precision with spectroradiometers, the basic concept is a tiny flat camera whose lens actually contains 135 micro-instruments all recording visual data from alert unique angles.

Each one of the 135 facets takes in a very particularly piece of the surrounding environment, creating rotational optics that have been described as insect-like. The benefits of using such a technological system could be widespread: every place we use small cameras now (phones, medical instruments, cars, etc.) could be brought up to a stronger resolution and optical level.

As Andreas Brückner, a main project manager on the team that helped create this optical device technically put it: “With a camera thickness of only two millimeters, this technology, taken from nature’s model, will enable us to achieve a resolution of up to four megapixels,” he said recently. “This is clearly a higher resolution compared to cameras in industrial applications.”

Current smartphone cameras generally feature a lens size around five millimeters, and they have a lack of flexibility by basic design. Although the relative thickness may seem somewhat inconsequential, that difference is massive for designers who must tailor optical ability only to where it can be fit. By improving resolution and visual arrays, on a much thinner scale, the applications for camera technology in tiny products becomes boundless.

This flat camera, or FacetVision as it’s called, was shown off by the Fraunhofer Institute this past January at a trade show in Las Vegas. Its admirers were immediate. Further adapting this technology will require significantly attuned spectroradiometers as well highly sensitive photometric testing. This will be especially true the thinner developers can manage to make mosaic lenses; the limit has not really been tested yet. For more information on spectroradiometric instruments and products produced at the highest level by Gooch and Housego, email or contact Maureen Knowles at 407-422-3171 (Ext: 206).

With Winter Blackout Fears Looming, LEDs are a Solution

Winter storm season is in full swing; the ice and snow is looming with each passing front and arctic blast. From Europe to the Americas, power grids are pushed to the edges of their limits. The National Grid, Great Britain’s main electric conduit, reported that it would be in a “tight but manageable” situation over the coming months; the gap between demand and the ability to generate power potentially fell within 1.1%. Many factors contribute to the strain of a nation’s power grid, particularly in the winter, but one that has come up in England is the progression from coal to solar. While this is a positive trend, locally-generated solar has obvious issues with the cloudy winter skies and shorter days. A solution to this pressure seems clear to some: installation of more LEDs made possible only by the use of better photometric standards.

One study by an industry analyst showed that if home lighting were completely switched to LED throughout the U.K., peak energy demands would be reduced by 2.7 gigawatts. This is roughly equivalent to 2.7 billion watts, with one billion watts being a very common supply size for one large, modern city. Beyond just being good environmental policy, by switching over more fully to LED lighting, energy costs will lower along with demand. The stability and health of overall national power grids, a concern worldwide as infrastructure ages, would be boosted.

Many cities and states are switching over to LEDs within their municipalities, from streetlights to the glow of public parks. The same study cited above showed that a total swap (in England) for public LEDs could save a further 0.5 gigawatts. The applications beyond public utilities and in-home lighting are even more enormous. Generally, some of the biggest users of power are large, commercial public and private buildings; moving to LED lighting in looming office structures would be a positive for both a company’s bottom line as well as the nation’s power grid.

In order to properly establish the right variety of overall LED setups for a world increasingly in need of them, proper photometric standards will be vital. Obviously, not all lights serve the same purpose, and LEDs can be retrofitted in such a wide assortment of ways that saving power with equal luminance should become rather detailed. Our electric planet should be fine-tuned to the needs of the 21st century, making for a cheaper, brighter, and more environmentally friendly system. For more information on our experience and LED products, contact us today at 407-422-3171 or toll-free at 800-899-3171.

Four Emerging Uses of LEDs

New uses in the field of LEDs seem to be popping up not yearly, but weekly. With the rapid growth in our technical ability to create this source, and with our ever-expanding LED calibration techniques, the industries and places where LEDs can and will be making a difference are incredible. It’s no longer just a different light bulb in your reading lamp, but a different disease that may soon be wiped out. LEDs are so revolutionary and versatile in their abilities that many of the ways they can be used just aren’t common knowledge. Below are four emerging and fascinating ways in which LEDs may be put to use in the future.

Better Tasting Milk

As bottles sit under harsh fluorescent lighting in grocery stores, some people have always felt that the conditions sour the taste. That intuition is beginning to be backed up by science; a recent study by researchers at Virginia Tech showed that LED lights interact with riboflavin more favorably than fluorescent lighting. This leads to better tasting milk. Plus, more widespread use of LEDs in grocery stores is a net positive for energy rates.

Lowering Suicide Rates

This incredible aspect of LED lighting has been used in Japanese bullet train stations for almost a decade now, and there is data to back it up. Using soothing, blue LED lights, the Journal of Affective Disorder found an 83% decrease in suicide attempts in comparable stations. Exactly why this seems to work is the source of debate and theory. But the fact that it does, for whatever reason, is powerful.

Mosquito and Malaria Protection

This one is pretty simple; mosquitoes (and many prey insects) aren’t actually attracted to the light that lamps put off, but the heat. Enter LEDs. With basically zero heat, it is believed that if LED lights are used in massive levels in the developing world, mosquito attraction will drop in urban areas. And with it, the rates of malaria are in decline. There is still some attraction based on lighting in general, many researchers have pointed out, but this could be better handled by flexible LEDs positioned correctly.

Better Agriculture

As the world population grows and land for widespread agricultural use becomes more scarce, there is hope for low-energy, high-yield crop growth: vertical farming. Using LED lighting and highly detailed calibration, companies are using stacked farming techniques inside abandoned or unused urban structures to grow crops. Additionally, finely calibrated LEDs can actually result in more stress-free livestock. With vastly lower energy and water use, this food of the future is seen by some as a technique that could be a billion dollar industry quite soon.

These are but a few of the many ways LEDs are improving and evolving our world. Gooch & Housego has the world-class instruments and LED calibration techniques to move in step with every advance in LED technology. For more information on our experience and products, contact us today at 407-422-3171 or toll-free at 800-899-3171.

LEDs Expected to Lead Future of Sterilization

It’s amazing the things that light and energy can do. Often, advancements in civilization and technology are driven by processes from which most of us never give a second thought to. Sterilization, down to the microbacterial level, is one of those pieces of progress rarely discussed in history classes and looked at by futurists, but undoubtedly, our ability to clean medical tools and drinking water is a very powerful source behind humanity’s ability to prosper. In decades past, this highly-important but unsung process was completed with the use of mercury lamps, which produced proper waves of ultraviolet radiation in order to get the job done in most industrial settings. But as we enter a new technological era, one marked by our increasing ability in LED photometric standards, we may be embarking on a revolution in sterilization with uses that we can’t yet even imagine.

LEDs used for the disinfection of tools, lab equipment, medical gear, and even drinking water comprise an industry some expect to soon explode. One analyst group recently pegged the possible market share at $610 million by 2021. There are some hurdles for the LED sterilization marketplace to overcome before becoming a reality, however. For one, mercury lamps work. As a deeply ingrained sterilization technology, they have the current advantage of both familiarity and our experience in using them.

Mercury lamps also have significant drawbacks. They are expensive, bulky, and only useful to professionals on a large scale. Additionally, mercury lamps are inefficient and require special disposal. Because the lamps contain mercury, they can’t simply be put into a dumpster or trash compactor because they could potentially break and release mercury into the environment. Both the EPA and local governments set strict disposal guidelines.

But what if you could use the effective ultraviolet light sterilization process without the dangers of mercury involved? In steps LED technology. At present, the only thing holding LEDs back from fully taking over the industry itself is the technology. Mercury lamps are incredibly powerful emitters of short wave ultraviolet light, and at our current place in time, LEDs have yet to be able to scale up to their power. However, innovations in photometric standards and careful calibration techniques appear to be quickly shortening that gap in power: LED light is exceptionally versatile, and we are still uncovering techniques for deploying the light spectrum it gives off. Configured correctly, LED arrays will likely match the brute wattage of industrial lamps in the very near future, and at a fraction of the cost and size. One day, a rural family could purify water from a well with an LED configuration that fits into a device the size of a soda bottle. This is the dream and the hope for the future of LED light sterilization technology.

Alternative LEDs Purify Water & Sterilize Equipment

As innovative LED technologies continue to appear, new uses for said technologies emerge in the same step. Using funding from the U.S. Army Research Office and the National Science Foundation, researchers at the Ohio State University recently unlocked a novel technique for growing LEDs on thin metal foils. Called unique deep-ultraviolet (DUV) LEDs, the applications of such expertise is still being uncovered. One potential way that DUV-LEDs could help the world is through sterilization of medical equipment and purification of drinking water, particularly in the developing world. Phenomenally sharp LED calibration would be key here, as would the ability to amplify the DUVs to a level beyond what researchers have done so far, but the building blocks are in place.

In modern times, UV lamps have been the primary light source used for detecting pathogens in water as well as on equipment that must be pristine. But these UV lamps, although generally effective in detection and destruction of pathogens, have significant drawbacks: they are large and cumbersome, not easily deployed in remote locations. The UV lamps also have a chance for mercury contamination, a fear that has grown in recent years. Because of this, DUV-LED lamps are looked at as a possible alternative with a big future.

The key will be modification to get DUV-LED technology up to the power that UV lamps, which are currently used to purify water, are at. Before the Ohio State University study, the only way known to make DUV-LEDs was extremely costly and used exceedingly pure single-crystal semiconductors. This was not a system that would have successful commercial applications at a widespread level. Researchers found, however, that by using molecular beam epitaxy (MBE), and placing them on tiny metal foils, they could create DUV-LEDs at a size of about 200 nanometers: almost comparable to the crystal semiconductor technique, but at a fraction of the price.

If the process can evolve to where the DUV-LEDs are comparable to UV lamps, the results could be revolutionary. Researchers involved in the project seemed confident they can get there in the future. Once DUV-LEDs can be brought up to power, their lightweight size and low cost could make deploying them around the world to purify water the leading way to provide clean drinking water. Advancements like these are at the forefront of technology and will require extensive consistent LED calibration. Gooch & Housego is a leader in the field with 40 years of experience and looks forward to the next advance.

Product Spotlight: OL 770-NVS Night Vision Display Test & Measurement System

Even in darkness, Gooch & Housego has learned how to help bring the light. With the OL 770-NVS Night Vision Display Test & Measurement System, light measurement instrumentation can be brought to a whole new level. This terrific piece of technology is backed by 40 years of experience in making instruments that define quality and precision. And when thinking of night vision, precision is an absolute key: goggles and other systems that rely on this technology must be well-suited to work with in-field systems. Display screens, particularly when concerning military operations, must work under strict guidelines when operating at night to avoid obvious potential dangers to personnel. In aeronautics, these guidelines are commonly referred to as MIL-STD-3009 requirements; the OL 770-NVS is designed specifically to test for operational ability under this banner, as well as a wide-range of other night-field software.

User-friendly and compact, the OL 770-NVS is equipment suited just as equally for the field depot as the lab. With its emphasis on aerospace light emission testing, the OL 770-NVS is a spectroradiometer that draws few comparisons in quality elsewhere on the market. Its uses are wide-ranging in aeronautics beyond MIL-STD-3009 (and the obsolete MIL-L-85762A) measurements: NVIS compatibility testing, SAE AS8037 and AS25050 requirement levels, and a host of possible applications with regards to exterior plane lighting.

As an affordable device in the 380-1100 nm wavelength range, this portable unit (weighing a mere 5.5 pounds, even with all its applications) is easily plugged into Windows 7. User-friendly and intuitive design is meant to make it easy on testers with experience ranging from limited to professional: the ability to see pass/fail status for all possible testing applications can be viewed simultaneously. The unit is also compatible with Windows XP/2000 OS.

When dealing with night vision technologies, particularly in regards to aircraft, confidence in instrumentation and testing results is at a premium. Small errors make big problems. When choosing companies to purchase sophisticated instrumentation from, selecting experience and quality is always the correct decision. Gooch & Housego is an innovator and industry leader with a long track record in light measurement instrumentation. For more information on purchasing, or additional details on our systems at large, e-mail, or contact Maureen Knowles at 407-422-3171 (Ext: 206).

Could LEDs Help Fight Zika and Malaria?

Everyone knows the old parable about the moth that flew too close to the flame. But was the moth attracted to the flame because of the light that it gives off, or the heat it gives off? Oddly, the answer to that question might be crucial to the future of mosquito management in a world where illnesses like malaria have always been an issue, and the emergent Zika virus has heightened concerns only further. Remarkably, the riddle may indeed have been solved. Recent research by scientists at the University of Bristol show that it is heat that is the primary reason insects are attracted to light. Because of this finding, some academics are pointing to LED lighting as a key tool in fighting mosquitoes in the developing world. It is reasoned that careful photometric standards in LEDs could lead to a drastic reduction in mosquitoes around homes and structures.

Quite simply, LEDs put off significantly less heat than their counterparts such as filament and fluorescent. In fact, carefully calibrated LED lights can functionally give off no heat at all. In studies done by the University of Bristol, LEDs proved to be the least attractive to insects (and mosquitoes) for this very reason. Filament bulbs attract biting insects because the heat they give off mimics the heat found in humans and animals: food sources for mosquitoes. By cutting this out of the equation, we should theoretically be able to reduce mosquitoes gathering near people.

The ability for LEDs to lower transmission rates on illnesses such as Zika and malaria is completely unknown: we just don’t have the necessary research and widespread testing that can show this. However, the science is in great agreement on the general principle of light/heat attraction in regards to insects. In addition to the heat factor, insects appeared to respond less favorably to the short wavelengths put off by LED lighting. This part of the research hints at a possibility to design future LEDs to be calibrated with wavelengths known to dissuade mosquitoes.

To do so, and perhaps to help in the ongoing fight with mosquito-borne illnesses across the world, strict photometric standards in LEDs will need to be adhered to. Only with sophisticated light measurement technology and calibration techniques is this possible. These are tools at the heart of Gooch & Housego; we have the knowledge and we have the experience. For more information on our technology, contact us at 1-(800) 899-3171.