Simulation
This selection of projects provides insight into the use of simulations for monuments, religious and administrative buildings and sales rooms.
Chiesa Dives in Misericordia
Simulation

The lighting design of the Chiesa Dives in Misericordia in 1998 constitutes a milestone in that this is the first time that virtual luminaires from ERCO were used for light simulation. This made it possible to show, check and analyse concept variants at an early planning stage. Approximately 160 virtual luminaires were used in the model of the church. The individual images from the Lightscape program were combined with interactive modules, which were accessible to all designers via the Internet and allowed them to evaluate the various light scenes.
Planning
The lighting concept uses direct, directional light to zone the sanctuary area and to accentuate the main focal points such as pulpit and crucifix. To do this, spotlights were fixed to the steel construction of the skylight. The other component of the concept consists of the uniform illumination of the interior of the arched concrete shell with spotlights and floodlights fitted above the skylights.
Architect:
Richard Meier, New York
Lighting design:
Fisher Marantz Stone, New York
Place:
Rome
Brandenburg Gate
Simulation
The Brandenburg Gate, the symbol of Berlin, has been restored and given a lighting makeover. The lighting designers intensively used light simulations throughout the entire planning process. Trial lighting was not possible as the building was covered throughout the design phase through to the unveiling. Virtual luminaires with their photometric light distribution enabled both qualitative conclusions and quantitative analyses. The results were used to determine the arrangement and alignment of the luminaires. The intensive use of simulations for the competitive tender was a crucial factor in the success of the project.
Planning
The columns are accentuated by in-ground lens wallwashers. The wall surfaces of the passages are illuminated by floodlights with an asymmetrical light distribution. In the main, the spotlights for the Quadriga monument on top of the gate were discreetly positioned on adjacent buildings.
Architect:
Carl Gotthard Langhans (1732-1808)
Lighting Design:
Kardorff Ingenieure, Berlin
Place:
Berlin
Ara Pacis
Simulation
For the simulations of the Ara Pacis, an ancient altar of peace, the designers used the photo texture method. The whole of the temple was photographed and the photos assigned to the individual structural parts. The DIALux program was then used to provide an exceptionally realistic impression. One of the focal points of the simulation was the analysis of the ideal angle of incidence for the relief, to check the formation of shadows resulting from the protruding frieze, and to integrate the luminaires perfectly within the architecture. An external view at night was created using the photo texture of the Travertin wall panels. The model was also used for daylight simulations. The building was embedded into the environment in an image processing program. The accessible areas in the building were documented with their illuminance levels and in the form of Isolux curves.
Planning
Visitors enter the building through a closed atrium, before the hall with the altar opens up before them, bathed in daylight. Spotlights installed in the niches of the concrete grid ceiling illuminate the reliefs on the temple. The luminaires fitted with daylight conversion filters correspond harmoniously with the light colour of the daylight. The warm light colour of the halogen light, on the other hand, optimally emphasises the colour of the Travertine wall panels.
Architect:
Richard Meier, New York
Lighting design:
Fisher Marantz Stone, New York
Place:
Rome
Scottish Parliament
Simulation
The Scottish Parliament with its asymmetrically vaulted ceilings, its visible roof supporting structure and its seating arrangement for the Parliament has a complex geometry that complicated the lighting design. This situation required the use of light simulations to ensure compliance with the specifications relating to the direction of light and the illuminance for television broadcasts. Due to the fact that the varying distances between luminaire and area to be illuminated resulted in substantial brightness contrasts, the illuminance was calculated on the basis of the faces at the conference table and increased, where necessary, by additional luminaires. The Autodesk 3ds Max program enabled the use of virtual luminaires with 3D geometries and photometric data records, which also allowed the designers to check the size of the luminaires in the room.
For the execution phase, a separate application was developed to translate the 3D data on the 900 luminaires of the simulation into 2D drawings and provide the luminous flux, position, alignment and view of each luminaire.
Ground plan
3D model
Study for Luminaire arrangement
Analysis of illuminance
Application for the analysis of illuminance
Test Rendering
Planning
In the plenary chamber, the high illuminance level required for TV broadcasts is achieved using 200 spotlights with Vario-lenses for 150W HIT-CE with 4200K, which also ensure visual comfort for the parliamentarians. The Vario-lenses enable the lighting designer to adjust the beam angles individually to suit the different distances to the illuminated areas.
Architects:
EMBT Enric Miralles, Benedetta Tagliabue, Barcelona; RMJM, Edinburgh
Lighting design:
Office for Visual Interaction (OVI), New York
Place:
Edinburgh
Simulation
Pierre-Félix Breton, Montreal
www.pfbreton.com
BMW Mini dealership
Simulation
The simulations for the dealership were used, on the one hand, to review the lighting concept and, on the other, for a realistic presentation of the design to the client. The scope of the simulations included the calculation of illuminance and luminance levels for the vehicles, walls and workspaces to analyse critical luminance contrasts and to evaluate the avoidance of glare. In contrast to the exclusive use of technical drawings with ground plan and section, the visualisations gave those involved in the planning process a better spatial picture of the lighting solution.
Planning
The glare-free general lighting of the showroom is provided by pendant downlights for 150W HIT-CE metal halide lamps. Additional spotlights on suspended light structures emphasise the presentation areas. A row of uplights accentuates the shape of the building and illuminates the cantilevered aluminium roof structure.
Architect:
Scaramuzza / Rubelli
Lighting designer:
Piero Comparotto, Arkilux, Verona
Place:
Brescia
Film: tune the light
Simulation

The simulation of dynamic, coloured light is extremely complex as seen when moving through a space. In a film, the individual images can differ both in light and perspective. To ensure maximum flexibility in the design, the luminaire groups were calculated separately without setting the final light colour. The video processing program was then used to put together the films of the different luminaire groups and to combine the dynamic colour settings. In this way, the colours could be adjusted without requiring new calculations for the film.
Planning
In the function room, the individual tables are accentuated by narrow-beam spotlights to give them the impression of them being islands. Floodlights with variable light colours alter the atmosphere through colour changes, while the projection of gobos creates eye-catching patterns of light.
Simulation:
Aksel Karcher, Berlin
www.akselkarcher.com















