How we work:
The DIANA-ID
From "Swabian tinkerer" to agile family business: Everything about our values, our goals and our principles.
What we can do:
The LED Experience
From concept to finished product: The entire development process of our LED lighting solutions is Made in Germany
Our history:
Innovation meets Experience
DIANA was founded in 1979 and has been fully committed to LED technology since the turn of the millennium. Countless innovations in industrial lighting have been developed by us.
Successful Projects:
Our Success Stories
We are proud of this: together with our customers, we find outstanding solutions to even the greatest challenges!
Our amber LED cleanroom lights eliminate critical UV wavelengths and protect photosensitive processes in wafer production. Precise wavelength control at 590 nm for ISO 5+ cleanrooms and lithography equipment.
In semiconductor production, precise lighting is not just about visibility – it's mission-critical. During photolithography, photosensitive resists (photoresists) are applied to wafers that can unintentionally cure or lose their structurability with even the slightest UV exposure. Conventional lighting contains UV components that jeopardize these processes.
Yellow light for semiconductor manufacturing solves this problem through targeted spectral filtering. Photolithography lighting operates in a tightly defined wavelength range around 590 nm – the so-called amber spectrum. This range provides sufficient brightness for precise workflows while containing no critical UV components below 500 nm that could damage photosensitive materials.
Especially in ISO Class 5 to 7 cleanrooms, where wafers are processed, transported, or inspected, UV-safe lighting is essential. DIANA cleanroom yellow light meets these requirements through precise spectral control, homogeneous illumination, and full cleanroom compatibility. Benefit from decades of experience from real semiconductor and cleanroom projects: Our practical knowledge from hundreds of realized applications flows directly into the development of every luminaire – whether standard solution or custom integration.
Our amber LED cleanroom lights are specifically designed for companies and institutions working in highly sensitive production and research environments. DIANA lighting for semiconductor production is deployed wherever photosensitive processes and cleanroom standards intersect.
Typical Application Areas:
All DIANA yellow light systems are designed for integration into existing machine environments and meet the highest cleanroom requirements. Whether standard solution or custom adaptation – our luminaires ensure your process quality without compromise.
Ideal for use in RABS and isolators, they offer a slim design and high light output. The use of stainless steel 1.4404 (V4A) ensures maximum hygiene and corrosion resistance.
With minimal installation depth and a flat design, they fit seamlessly into ceilings or walls and ensure consistent illumination without protruding elements. This minimizes dirt accumulation and makes cleaning easier.
The compact design and robust housing of our surface-mounted lights enable trouble-free and reliable use under extreme conditions. In addition, the uncomplicated installation keeps the installation costs very low.
These versatile, cost-effective luminaires are particularly space-saving and are ideal for less demanding applications. Thanks to their modular design, volumes of different sizes can be illuminated in white or color.
When standard solutions are not enough, DIANA develops customized LED solutions that are precisely tailored to your specific requirements. Whether special dimensions, specific materials or special lighting requirements - our experts will find the right solution.
DIANA is your experienced expert for LED yellow light cleanroom luminaires. Cleanroom luminaires based on LED technology have been an integral part of our comprehensive product range for the pharmaceutical and semiconductor manufacturing industries since 2003.
Let our experts advise you on which luminaire is best suited to your application.
DIANA yellow light fixtures combine precise spectral control with robust cleanroom technology. All systems are designed for use in highly sensitive manufacturing environments:
True LED Technology Instead of Filter Covers:
Unlike many competitor solutions, DIANA does not use yellow filter covers that block UV components. Such filters degrade over time and require regular inspections (often every 6 months) with measuring devices – maintenance effort that creates risks and increases operating costs.
Instead, DIANA uses specially developed LEDs that directly emit only the desired amber spectrum – no filters, no degradation, no maintenance intervals. This guarantees long-term stable wavelengths and eliminates the risk of undetected UV transmission.
Normal LED light – even warm white – always contains UV and blue components in the spectrum below 500 nm. These wavelengths activate photosensitive materials like photoresists and can unintentionally influence lithography processes.
Yellow light completely filters out these critical ranges and delivers exclusively long-wave, safe light around 590 nm. This ensures sufficient visibility without endangering photoreactive processes.
In the semiconductor industry, a wavelength range of 585–595 nm has become established as the standard, with a peak typically at 590 nm. This range offers the optimal balance between sufficient brightness for work and inspection processes and reliable filtering of all UV and short-wave blue components that could impair photoresists or other light-sensitive materials.
Photoresist reacts sensitively to wavelengths below approximately 500 nm – particularly UV and blue light components. Lighting that does not disturb photoresist must completely eliminate these spectral ranges.
DIANA yellow light systems are precisely calibrated to this requirement range and ensure through strict wavelength control that no harmful radiation components reach the cleanroom.
Yes, absolutely. While yellow light is primarily used in photolithography, it is also suitable for other applications where UV exposure must be avoided – such as in coating processes, surface treatment, or research environments with light-sensitive chemicals.
Additionally, DIANA yellow light fixtures meet all general cleanroom lighting requirements: particle-free operation, easy cleaning, long lifetime, and flicker-free performance.
Modern semiconductor processes involve extremely sensitive photoreactive materials. Even minimal UV exposure can cause production scrap, quality issues, or process instability.
UV-safe lighting is therefore not an optional feature but a production-critical requirement. It protects your investment in materials, machines, and processes – and ensures consistent high product quality.
We are happy to assist you with any additional questions. Simply send us your inquiry through the contact form.