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Current State of UV LED Technology

By Mike Ulizio | March 21, 2016

Over the last decade, the ultraviolet (UV) LED market has grown substantially. Since 2008, there has been more than a fivefold increase in the number of companies manufacturing UV LEDs. Last year, we reviewed the current state of UV LED technology; a lot has changed since then, and UV LED adoption continues to accelerate. Much…

Chromaticity Basics: Factors, Calculation, and Application

By Mike Ulizio | January 11, 2016

Color is a universal language. At traffic lights around the world, drivers understand to stop on red and go on green. For many signaling applications, including those in the railroad and aerospace industry, operators are trained to recognize and respond to very specific colors.

The Clear Choice: How to Choose the Best Transparent Material

By Mike Ulizio | November 12, 2015

There are many transparent materials out there for you to consider when designing a lens for a lighting application. Take a look at the image above; these different transparent materials all look fairly similar don’t they? You may be asking yourself “What makes glasses and plastics so different?

How to Design with LEDs: Iterative Approach Yields Fully Optimized Lighting Systems

By Sharayah Follett | October 19, 2015

While the cost of light emitting diodes (LEDs) is decreasing, they are still relatively expensive and their adoption should be carefully considered before making the switch. Optimization of the optic and other system components can reduce the number of LEDs needed and reduce the overall cost of the LED lighting fixture. Solid state lighting (SSL)…

Mechanical Properties of Glass: Design to Survive Stress, Impact, and Abrasion

By Adam Willsey | September 28, 2015

When designing a lens for a harsh environment, you need to choose a material that is resistant to pressure, abrasion, and impact. Some applications, such as exterior aircraft lighting, can push a material to its limits. Exterior aircraft lenses are exposed to smog, dust, and other air pollutants at very high speeds; the resulting impacts…

Challenges of Determining LED Useful Life

By Sharayah Follett | September 14, 2015

The transition to light emitting diodes (LEDs) from conventional light sources brings several new challenges to lighting engineers and designers. LEDs are much different than incandescent bulbs, especially in terms of useful life. It’s easy to determine the useful life of an incandescent lamp; if the light goes out, its useful life is over. This…

Optical Properties of Glass: How Light and Glass Interact

By Mike Ulizio | August 24, 2015

This is the second article in a three-part series that reviews the thermal, optical, and mechanical properties of glass. We will define common glass properties and explain their application and importance in component design. We often hear from engineers who are evaluating the impact of a design change from one lens material to another. For…

Glass Thermal Properties and Their Role in Product Design

By Mike Ulizio | August 5, 2015

This is the first article in a three-part series that reviews the thermal, optical, and mechanical properties of glass. We will define common glass properties and explain their application and importance in component design. It is critical to have a thorough understanding of glass thermal properties when designing with a glass lens or filter. When exposed…

3 Common Glass Types: Properties and Applications

By Adam Willsey | July 14, 2015

Glass is an immensely versatile material; it is used every day in numerous applications, many that most of us are not even aware of. We use it to drink beverages, to store food, and as windows in our homes and automobiles but glass is also used in many unseen applications. For instance, glass components are…

Combat Color Variability: Basics of LED Binning

By Sharayah Follett | June 30, 2015

Light emitting diodes (LEDs) or solid state lighting is infiltrating many lighting markets. The rapid pace of adoption and technology innovation leaves many engineers and designers struggling to understand the basics of LED technology and how it differs from traditional light sources. Before adopting LEDs, it’s important to have a thorough understanding of their mechanics, differences, and…

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