Freelance engineering office for lighting design & planningLighting knowledge
12 expert articles with verified standard values and sources – clear for building owners, precise for planners.
For private clients
Residential lighting design: how to plan rooms in lighting zones
Ambient, task and accent light: how to plan the lighting of a home room by room – with practical tips from a lighting designer.
Colour temperature, colour rendering, glare: what really matters when buying luminaires
Kelvin, Ra/CRI and UGR explained: which values on the packaging and data sheet really matter when buying luminaires.
Garden lighting without light pollution
Planning insect-friendly garden lighting: colour temperature, shielding, switching times and consideration for neighbours – with legal background and official recommendations.
For architects & planners
Lighting calculation and visualisation: avoiding design errors before construction
Why a lighting calculation with DIALux evo or Relux before construction saves money, what results it delivers and how it fits into the HOAI work stages.
Daylight in buildings according to EN 17037
EN 17037 explained: daylight provision with the levels minimum, medium and high, view out, exposure to sunlight and glare protection – and what this means for design.
Developing custom luminaires: from idea to prototype
How a custom luminaire is created: specification, optical design, thermal management, prototype, measurement and conformity according to IEC 60598 and CE marking.
For businesses
Warehouse and industrial hall lighting: planning an LED retrofit properly
LED retrofit in halls and warehouses: requirements of EN 12464-1:2021, maintenance factor, vertical illuminance in racking, controls and funding.
Sports lighting: requirements for halls, pitches and riding arenas
Sports lighting according to EN 12193: lighting classes I–III, values for football and equestrian sports, glare, light spill and design tips.
Lighting car parks and outdoor workplaces safely
Car park lighting according to EN 12464-2: 5, 10 or 20 lx depending on traffic volume, uniformity, facial recognition, glare and environmental aspects.
For municipalities
Street lighting according to EN 13201: lighting classes explained
The M, C and P lighting classes of EN 13201 explained simply: what they apply to, how they are selected according to DIN 13201-1 and which parts the standard has.
Renovating street lighting: process, costs, funding
Retrofitting street lighting to LED: six-step process, cost factors and funding under the German Kommunalrichtlinie (as of November 2026, application deadline 31.12.2027).
Lighting pedestrian crossings correctly
Lighting of pedestrian crossings according to DIN 67523 and R-FGÜ 2001: 30 lx vertical at 1 m height, at least 4 lx in the assessment area, colour temperature and luminaire arrangement.
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