
Development and manufacture of custom LED luminaires and special luminaires made from aluminium, sheet steel and stainless steel sheet in Horstmar.

Cohausz Leuchten GmbH
HorstmarNew on Amplifa
Luminaire manufacturer since 1948
Cohausz Leuchten GmbH is a family-run luminaire manufacturer based in Horstmar in the Münsterland region. Since 1948, lighting systems have been planned, designed and produced there. The portfolio includes made-to-measure LED luminaires: surface-mounted, recessed and pendant luminaires, wall luminaires, hall lighting, light line systems as well as special luminaires as contract manufacturing to customer specification. Production uses sheet steel, stainless steel sheet and profiled aluminium; corrosion resistance is achieved through powder and wet paint coating in a wide variety of colours. In addition to manufacturing, the company handles the complete electrical installation, the integration of control systems (RGB(W), tunable white/Human Centric Lighting, emergency lighting, sensor technology, Smart Building, Li-Fi) as well as the retrofitting of existing luminaire systems with made-to-measure LED luminaire inserts. Fields of application include residential areas, office and commercial buildings, retail spaces, exhibition areas, sports facilities and bed head luminaires for hospitals; customers are architects, lighting planners and building owners.
- Site
- Horstmar
- Processes
- Engineering/design & manufacture of LED luminaires (surface-mounted, recessed, pendant, wall, Metal & mirror reflector processing, Coating work (powder coating, wet paint), Profiling / sheet metal processing of aluminium sheets, Complete electrical installation (assembly/integration of control systems, sensors, RGB(W),, Planning, consulting & lighting design (3D-CAD, lighting simulation), Testing & final inspection, Renovation / substitution - retrofitting of existing luminaire systems with made-to-measure
- Materials
- Aluminium (profiled), Sheet steel, Stainless steel sheet, Powder coating, Wet paint coating
- Certificates
- Testing & final inspection
- Founded
- 1948
- Industries
- Office and commercial buildings, Retail spaces, Exhibition areas, Sports facilities, Residential areas, Hospital (bed head luminaires)
- 01
Consulting and lighting design (3D-CAD, lighting simulation)
- 02
Engineering/design
- 03
Sheet metal processing and profiling
- 04
Metal and mirror reflector processing
- 05
Coating (powder/wet paint)
- 06
Electrical installation and integration of control systems
- 07
Testing and final inspection
- 08
Direct shipping
Materials and processes
Aluminium (profiled)
Lightweight profiled aluminium sheet for custom luminaire housings and light lines.
Sheet steel
Sheet steel for robust luminaire bodies, among other things in hall lighting.
Stainless steel sheet
Corrosion-resistant stainless steel sheet for demanding environmental conditions.
Powder coating
Powder coating for corrosion resistance and colour design of luminaire surfaces.
Wet paint coating
Wet paint coating as a second coating type in a wide variety of colours.
Locations

Horstmar
DEHead office with planning, engineering/design, production and sales
- Lot size
- Prototype, small series, medium series
- Materials
- Aluminium, sheet steel, stainless steel sheet
- Electronic production machinery
- 3D-CAD drawing systems
- Lighting simulation software
Components












Inside the production








Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Engineering/design & manufacture of LED luminaires (surface-mounted, recessed, pendant, wallAssembly | – | – | – | – | Aluminium, Sheet steel, Stainless steel sheet |
| Metal & mirror reflector processingSurface | – | – | – | – | Aluminium, Sheet steel, Stainless steel sheet |
| Coating work (powder coating, wet paint)Surface | – | – | – | – | Steel, Stainless steel, Aluminium |
| Profiling / sheet metal processing of aluminium sheetsForming | – | – | – | – | Aluminium |
| Complete electrical installation (assembly/integration of control systems, sensors, RGB(W),Assembly | – | – | – | – | Steel, Stainless steel, Aluminium |
| Planning, consulting & lighting design (3D-CAD, lighting simulation)Engineering | – | – | – | – | – |
| Testing & final inspectionTesting | – | – | – | – | – |
| Renovation / substitution - retrofitting of existing luminaire systems with made-to-measureAssembly | – | – | – | – | Steel, Stainless steel, Aluminium |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Electronic production machinery | – | – | – | – | Horstmar |
| 3D-CAD drawing systems / lighting simulation software | – | – | – | – | Horstmar |
Additional services
Reference customers
Quality
Every luminaire at Cohausz undergoes testing and final inspection before direct shipping. The design is carried out with modern 3D-CAD drawing systems and lighting simulation software for perfectly fitting luminaire construction.
| Evidence | Horstmar |
|---|---|
| Testing & final inspection |
History
- 1948
Founding of the company Ludwig Cohausz in Horstmar; manufacture of radios, choke coils and light bars
- 1960
Manufacture of light lines and special solutions as OEM for companies such as Sylvania, Karstadt and Nino
- 1980
Mass production of "Saudi luminaires" for the Middle East (Kuwait, Bahrain, Qatar, Saudi Arabia)
- 1985
Bernard Cohausz joins in the second generation and revives the special luminaire business
- 1990
Specialisation in special luminaires; expansion of production area to approx. 5,000 m²
- 1991
Re-establishment of Ludwig Cohausz GmbH; integration of the Laer branch into the Horstmar location
- 2008
Renaming of Ludwig Cohausz GmbH to Cohausz Leuchten GmbH
- 2016
Sven and Holger Cohausz join in the third generation; founding of Cohausz Leuchten Vertrieb GmbH
- 2018
70th company anniversary