Info
Info
News Article

Soraa LEDs Illuminate Caves In Germany

Colours of Saalfred Fairy Grottoes' mineral formations revealed by artist's approach to lighting design

Soraa, a maker of GaN-on-GaN LED technology, has announced that its LED lamps have been installed to illuminate the natural beauty of the mineral formations found in the Saalfred Fairy Grottoes in Thueringen, Germany.

Through Soraa LEDs and an artist's approach to lighting design, thousands of visitors can now see the subtleties in the incredible colours in stalagmites in the underground caverns, according to the company.

Centuries ago miners searched for gold and silver in the Thueringian Slate Mountains in Saalfeld. After the discovery of alum shale, mineral indispensable for the processing of alum and vitriol, the area was excavated and large underground caves were created. Left untouched after they were closed, the mines slowly filled with colourful stalagmites and stalactites. In 1914, the present day fairy grottoes were opened to the public as an exhibition mine.

While the natural mineral formations were impressive, lighting the dark, subterranean spaces of the caves presented challenges. Previous lighting was inefficient, created an industrial feel and produced flat, monotone colours, failing to show the full, true beauty of the grottoes.

Lighting artist Rolf Zavelberg chose Soraa GU10 LED lamps to illuminate the space to reveal the unseen in the grottoes.

"Our approach is poetry in light, searching for hidden beauty that can be amplified by light and shadow. We want visitors to be in awe of nature's beauty and creative forces in the Saalfred Fairy Grottoes. There is an artistry in the caves that is only perfectly illuminated with Soraa LEDS," said Zavelberg, founder of Cologne-based light artistry firm Aktivraum. "There are thousands of variations in single colours that can be seen now."

The different colour temperatures and optics from Soraa's LED lamps enabled Saalfeld Feengrotten to produce a very detailed and sophisticated lighting production that does not alter the character of the grottoes, but enhances the rock formations.

"The lighting is beautiful. The real colours in the caves are much more striking and the subtler tones can be seen for the first time," said Yvonne Wagner, director of the Feengrotten GmbH.

According to Soraa, the caves at Saalfeld Feengrotten are illuminated with perfect rendering of colours and whiteness because of Soraa's Violet-Emission 3-Phosphor (VP) LED technology. Using every colour in the rainbow, especially deep red emission, Soraa's lamps render warm tones beautifully and accurately, and achieve a colour-rendering index (CRI) of 95 and deep red (R9) rendering of 95.

And unlike blue-based white LEDs without any violet emission, the company's lamps have violet emissions to properly excite fluorescing brightening agents, including paper and natural objects.

Soraa's LED technology allows its LEDs to operate at currents that are more than five times higher than LEDs built on other materials. This means a lot of light comes from a very small source, resulting in a narrow beam that can be controlled to crisply illuminate any area with a single shadow. 



AngelTech Live III: Join us on 12 April 2021!

AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST) and will feature online versions of the market-leading physical events: CS International and PIC International PLUS a brand new Silicon Semiconductor International Track!

Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.

2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.

We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.

We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.

Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.

Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.

So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.

REGISTER FOR FREE

VIEW SESSIONS

Info
×
Search the news archive

To close this popup you can press escape or click the close icon.
×
Logo
×
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
 
X
Info
X
Info
{taasPodcastNotification}
Live Event