Digital Systems

Highlighting architectural details – framed by complete daylight simulation to create an outstanding lighting atmosphere

A dynamic color lighting installation with Human Centric Lighting (HCL) character has been implemented and integrated into an existing KNX system via DALI Professional in the historic building of the “Allgemeine Sparkasse” savings bank in Linz, Austria.

The head office building of “Allgemeine Sparkasse Oberösterreich” (General Savings Bank Upper Austria) in Linz was completed in 1892. The innovative all-new lighting design created within the scope of a re-interpretation of the stairways and foyer leading to the executive offices perfectly highlights all the amazing details of these interior rooms which are well worth a visit. The ten large pendant luminaires suspended under a skylight in the foyer are the most striking detail of this meticulously thought-out lighting concept. In order to enable optimal light color dynamics as well as the simulation of natural daylight cycles, they are controlled by DALI Professional integrated into a KNX system via a KNX interface.


Category: Human Centric Lighting, Office
Subcategory: Conference rooms, Architainment lighting, Luminous ceiling/decorative backlighting
Location: Linz, Austria
Technology/Services: Light engines and LED modules, Light management systems
Year: 2018

Making use of the versatile benefits of light to expose and highlight the special architectural character and details of interior rooms: This was the basic idea the architects had in mind when renovating representative rooms of “Allgemeine Sparkasse” in Linz. At the historic head office, the stairways and adjacent foyer leading to the executive offices were reinterpreted.

Completed in 1892, the monumental representative building of the banking institution founded in 1849, now renamed “Allgemeine Sparkasse Oberösterreich”, reflects the special architectural features of strict historicism. The plans for this magnificent building were originally designed by architect Ignaz Scheck in 1857. A delightful medley of details adorns the stairways and especially the executive foyer which can now be admired in all their splendor thanks to state-of-the-art lighting. In addition to its actual purpose, the foyer is an attractive venue for receptions and small celebrations.

Eyecatcher: Pendant luminaires with idealized daylight cycles
The implementation of a close-to-HCL approach with a simulated optimal daylight cycle in the ten large pendant luminaires in the executive foyer was a special challenge: The architects’ idea was that the pendant luminaires should provide a lighting atmosphere that complements or replaces the daylight provided by the sky-light above. The pendant luminaires are equipped with light sources with varying color temperatures from warm white (2,700 K) to cool white (6,500 K), enabling the simulation of an optimal daylight cycle.

Furthermore, the round arches above a cornice are specially highlighted thanks to OPTOTRONIC power supplies, and the pillar reliefs on the wall are illuminated in perfect light. Additional, optionally switchable spotlights are directed downwards from the cornice in order to add a stunning lighting effect for special events. In one of the stairways the bust of Austrian Emperor Franz Joseph I is permanently illuminated by a spotlight.

Close cooperation – also in technology
The DALI Professional components integrated into an existing KNX system enable the precise control of the dynamic color application. The real-time clock of DALI Professional is simply ideal for implementing daylight cycles in the twinkling of an eye . The entire lighting system can be operated via the KNX interface and the corresponding app on a smartphone or tablet.

The project was planned and executed by local companies to a large extent: Based on the overall concept designed by the two Linz-based architects Eva-Maria Bauer and Gerhard Stahl, the light design was detailed by the light planner Christian Nopp from the “Das Licht” light design company in Leonding and implemented by Ransmayr Elektrotechnik, Linz. OSRAM was in charge of the programming and commissioning of eight lighting scenarios.

Project partners:

ArchitectsEva-Maria Bauer, Gerhard Stahl
Light planningChristian Nopp,
InstallationRansmayr Elektrotechnik,