
Project and custom luminaires from Tönisvorst as well as daylight systems, luminaire manufacturing Made in Germany since 1972

Interferenz Lichtsysteme GmbH
TönisvorstNew on Amplifa
About Interferenz
Interferenz Lichtsysteme GmbH was founded in 1972 by Alfred Korsch and has since been manufacturing project and custom luminaires for architectural applications at its site in Tönisvorst. The company specialises in the development and production of custom LED luminaires, including downlights, spotlights, wall lights, pendant luminaires, LED tubes and custom-made solutions for projects. Customer-specific lighting solutions are developed in the company's own lighting laboratory; historic luminaires are also retrofitted to LED technology. In addition to artificial lighting, the sister company Interferenz Daylight GmbH plans and distributes standardised daylight systems such as Solatube light tubes and heliostats. Aluminium (including anodised high-purity aluminium 99.96% for reflectors) as well as polycarbonate, acrylic glass and plastic are processed for housings and optics at the factory. Customers come from industries such as automotive, banking, telecommunications, retail, hotels, churches, insurance and Deutsche Bahn.
- Site
- Tönisvorst
- Processes
- Manufacturing of project and custom luminaires (LED) for architectural applications, Development of custom lighting solutions in the company's own lighting laboratory, Retrofitting historic luminaires to LED technology, Planning and implementation of daylight systems (Solatube light tubes, installation, Planning and distribution of standardised daylight products, Heliostat systems: development, drive mechanics, electronic control (tracking accuracy ±
- Materials
- Aluminium, High-purity aluminium 99.96% anodised, Polycarbonate (Frosted), Metallised aluminium (reflectors), Acrylic glass, Plastic (housings/reflectors), Crystal mirror glass, Metallised aluminium
- Certificates
- ENEC (DEKRA)
- Founded
- 1972
- Industries
- Architectural and lighting design, Retail, Hospitality, Banks and insurance, Automotive, Telecommunications
- 01
Development in the company's own lighting laboratory
- 02
Design and project planning
- 03
Manufacturing and assembly of luminaires
- 04
Installation service and on-site assembly at the customer
Materials and Processes
Aluminium
Heat sinks, housings and reflectors of the LED luminaires, painted to RAL or anodised.
High-purity aluminium 99.96% anodised
Highly reflective downlight reflectors.
Polycarbonate (Frosted)
Covers of the LED tubes.
Acrylic glass
Light-diffusing rods, discs and diffuser attachments.
Metallised aluminium
Plastic reflectors for Mini and Midi spots.
Crystal mirror glass
Indirect radiation and ceiling brightening in secondary luminaires.
Sites

Tönisvorst
DEDevelopment, manufacturing and distribution of project and custom luminaires (artificial lighting)
- Materials
- Aluminium, polycarbonate, acrylic glass, plastic, glass
- Lighting laboratory
Components and Products



Inside the production








Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacturing of project and custom luminaires (LED) for architectural applicationsAssembly | – | – | – | – | Aluminium, Polycarbonate, Acrylic glass, Plastic |
| Development of custom lighting solutions in the company's own lighting laboratoryEngineering | – | – | – | – | – |
| Retrofitting historic luminaires to LED technologyAssembly | – | – | – | – | – |
| Planning and implementation of daylight systems (Solatube light tubes, installationAssembly | – | – | – | – | Acrylic (prism dome) |
| Planning and distribution of standardised daylight productsEngineering | – | – | – | – | – |
| Heliostat systems: development, drive mechanics, electronic control (tracking accuracy ±Engineering | ± 0,2° | – | – | – | – |
Quality and Certification
The products are ENEC-certified; certification is carried out by DEKRA. Data sheets with lighting technology and material specifications document the technical standards of the luminaire programme.
| Evidence | Tönisvorst |
|---|---|
| ENEC (DEKRA) |
History
- 1972
Founded by Alfred Korsch; initially luminous ceiling systems for open-plan offices with integrated acoustics and climate technology
- 1997
Management taken over by Markus Korsch
- 2003
Implementation of a Cartier exhibition at the Moscow Kremlin Museum with warm-white LEDs
- 2008
148 SolaMaster systems with eight-metre tube lengths each in the Beijing Olympic Hall
- 2011
Installation of one of the world's largest OLED light objects in the stairwell of an administrative building in Berlin