Lumiphous™ (Phosphor-Glass Composite)


Glass technology expands uses and possibilities
for LEDs and laser sources

Today, use of LEDs as a light source is on the increase as people catch on to its energy-saving properties. Indeed, the white LED looks set to become the go-to light source for the next generation of light fixtures. Its diverse range of uses includes household and retail lighting, automobile headlights, flashlights and more. But did you know that our phosphor-glass composite is playing a role in realm of LEDs?
Read on to Related Information about Lumiphous phosphor-glass composite.

Ground-breaking advances from glass materials

A phosphor is a substance that turns external energy into light. Its more familiar applications are in fluorescent lights and TVs. In LEDs, phosphor is used to alter the color of light.

White LED made with conventional resin-phosphor mix

Today’s typical white LEDs use a phosphor-dispersing resin mixed with silicon or some other resin as a wavelength-converting material that casts powdered yellow phosphor onto the area around a blue LED chip.
This composition has allowed for low-cost manufacturing of white LEDs, but there is a downside: they are vulnerable to heat and water and struggle to disperse phosphor evenly within the resin.

Visualization of an LED using Lumiphous phosphor-glass composite

We have harnessed glass’s unique properties to develop a new wavelength-converting material to replace resin: Lumiphous phosphor-glass composite.
By developing a glass material that scatters phosphor uniformly and that is resistant to heat and water, we have created a material that generates light with near-perfect chromaticity.

※Source: LED glossary from “Tech-On!” published by Nikkei Business Publications, Inc., with modifications to the title and elsewhere

Features of Lumiphous phosphor-glass composite

Excellent heat-resistance for high-power LEDs

Lumiphous phosphor-glass composite can withstand heat of over 300°C.
They are also suited to high-power LEDs that generate great amounts of heat, meaning they can help further popularize this radical lighting technology.

Reliable water-resistance will surely lead a greater range of applications

Since glass blocks water and keeps the phosphor inside secure, Lumiphous phosphor-glass composite is ideal for use with LEDs requiring powerful water-resistance, such as for outdoor lighting, in showers, or at indoor pools or other sports facilities.

Lumiphous Wheel phosphor-glass composite: ideal for projectors

By rotating the Lumiphous Wheel—a combination of green and blue phosphor-glass composite—you can extract three colors from a single blue light source: red, blue and green. Consequently, the Lumiphous Wheel is perfect for use in projectors using high-power LEDs or lasers as light sources.

Harnessing glass’s characteristics helps conserve energy

Energy conservation will continue to be an important issue in the future. Accordingly, we believe that energy-efficient LEDs will play an even greater role in providing illumination, and that high-power LEDs are on the way. Furthermore, we are likely to see progress in uses and applications involving laser light sources. Glass is resistant to heat and water and can take various shapes, and we believe this material is full of potential in the realm of lighting.
By popularizing Lumiphous phosphor-glass composite and developing new glass materials that are also compatible with OLEDs, we are helping to grow and add new functionality to the lighting sector, and is contributing to a more energy-efficient society.

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