Subscribe to our weekly newsletters
Subscribe to newsletter


Editor's Note: Osram provide:-

LED lights LED lights
LED lightingLED lighting
Slim lightingSlim lighting
Architectural lightsArchitectural lights

Request Information

Include Article



Request Information
Terms of use


Request Facilities / Interiors product information

Request Architectural product information External

Request Architectural product information Internal

Request Mechanical HVAC product information

Request Electrical product information


OSRAM’S Retrofit Lamps Used In Historic Lanterns – LEDs Provide Energy-Saving Period-Style Street Lighting In Regensburg

OSRAM Opto Semiconductors and Siemens have demonstrated that energy-saving LEDs can provide authentic period-style lighting to illuminate a historic centre. The companies have developed a retrofit solution which meets the requirements of a modern lighting system while preserving the atmosphere of a world heritage site. High-power Golden DRAGON® Plus LEDs have been discreetly installed in the luminaires prescribed by the Office for the Preservation of Historical Monuments. These LEDs target the precise spot they are intended to illuminate, thus avoiding light pollution.

Regensburg has narrow alleys and many winding streets in a multitude of different lengths and widths. The intricately structured town needs luminaires which enhance its historical ambience. To ensure consistently attractive lighting, the different colours of the buildings had to be taken into account and the colour temperature and colour rendering index adjusted accordingly. It was essential that the light provided from these historical lanterns did not dazzle in residential areas, nor spoil the romantic atmosphere of candle-lit restaurants.

OSRAM has come up with an option that truly fits the bill with its prototype retrofit lamp that features Golden DRAGON® Plus LEDs. The light is fully directed to the exact place it is intended to illuminate whether it be directly onto the street of onto a building façade when it is used to highlight architectural features. Additionally, the desired level of luminance and the light distribution can be precisely adjusted by adapting the number of LEDs, the optical devices and the dimming level.

The LEDs have a colour temperature of 3500 K and a colour rendering index of 80. A common optical device combines the light from the individual LEDs into a single beam and accurately directs it towards the desired target. As part of this project, the alleyways known as “Blaue Liliengasse” and "Untere Bachgasse" were fitted with new luminaires and some of the LEDs were directed towards building façades. This demonstrates that the lighting can be precisely tailored to the architecture.

"The LED solution offered by OSRAM and Siemens is ideal: this modern lighting solution can be perfectly integrated in the historical centre and offers other advantages, too, such as energy savings, no light pollution and optimum façade illumination," said Alfons Swaczyna, Head Construction Manager and Director of the Civil Engineering Office of the municipality of Regensburg. He spoke of plans to convert most of the luminaires in the town centre to the new technology.

The prototype luminaire permits the replacement of ordinary 90 W mercury vapour lamps with LEDs. The luminaire design is based on a cylinder. Manufactured by the Regensburg branch of Siemens, the prototype can be fitted with different numbers of LEDs on either side as required in order to produce the desired lighting effect. Up to now, there was an uneven distribution of light, but now a homogenous illumination of around 3 Lux has been achieved.

"We have achieved the same luminance while cutting energy consumption from 90 W to just 42 W and additionally integrating façade illumination for historical buildings," said a contented Dr. Martin Moeck, Project Manager for Application Concepts at OSRAM Opto Semiconductors, "And there has also been a marked reduction in the direct glare."


3M Branding advertising Electronic whiteboards Commercial applications News 141209

Grohe LED light strips LED rope light Integrated lights News 141209

Saint-Gobain Sustainable energy Sustainable building Carbon home Solar energy News 141209

Terrys Fabrics Custom Curtain fabric suppliers Window treatments curtains News 141209

Osram Energy saving lighting Energy efficient Light energy saving News 141209

Zip Heaters Water heaters Hot water system Hot water boiler News 151209

Harlequin Sprung dance floor Dance floor Dance studio flooring News 151209

DHF Door furniture Door hardware Front doors Doors manufacturer News 151209

Advanced Hygienic Contracting Hygienic wall cladding Bathroom wall cladding Ceiling cladding News 151209

Polypipe Rainwater drainage Plastic drainage pipeWater heater systems News 151209

Cembrit Roof slates Slate tiles Roof slate Natural slate News 151209

Knauf Drywall Thermal insulation board Floor insulation Gypsum News 151209

Dimplex Heat pumps The building regulations Air heat pumps News 161209

Armstrongs Suspended ceiling systems Acoustic ceiling panels Accoustic ceilings News 161209

Steadmans Roofing products Roofing service Roofing cladding Insulated panel News 171209

Weatherite Heat pumps Air handling unit Heating air conditioning News 171209

AVK/SEG Power generator Power generator manufacturer Industrial power generator News 171209

Flowcrete Floor screed Resin flooring Concrete screed News 171209

Dorma Doors internal Doors external Doors french Residential doors News 171209

Reigens Artificial light Lighting exterior Commercial lights Fixture lighting News 171209

Mitsubishi Heat pumps Air conditioning units Heating air conditioning News 171209

Hunter Plastics Plastic guttering Guttering systems Plastic gutter Rainwater gutter News 211209

Crown Wall paint Exterior paint Paint supplies House paint News 211209

Tileplans Industrial flooring Garage floor covering Garage floor cover News 211209

Coolmation Industrial cooling systems Industrial water chiller Pump chiller News 211209

Ardex Epoxy floor Floor screeds Tile adhesives Polyurethane resin News 211209

Leaderflush Shapland Doors internal Wooden interior doors Contemporary interior doors News 211209

Dow Floor insulation Insulation materials Thermal insulation Soundproofing insulation News 211209

Velux Roof windows Skylight windows Window blinds Velux windows News 211209

Dorma Doors internal Doors external Residential doors Affordable doors News 221209

Schueco Structural glazing Curtain walling Structural glass Glass curtain News 221209

SAS International Acoustic-ceiling-Acoustic panels Suspended ceiling Ceiling solutions News 221209

Aico Fire detection Fire protection Fire alarm Fire systems News 221209

Armstrong Acoustic ceiling Suspended ceilings Acoustic panels Ceiling panels News 221209

Redland Roof tiles Tile roofing Slate roofing Roofing systems News 221209

Mitsubishi Heat pumps Central air conditioning Air conditioning units News 221209

KNX Lighting controls Lighting software Intelligent building Automation controls News 221209

Osram LED lights LED lighting Slim lighting Architectural lights News 221209

Dulux Trade paint Paint decorating Colour paints Buy paint News 221209



Arundel Jones Associates Ltd Registered in England and Wales No. 07334149
Hill Farm, Linton Hill, Maidstone, Kent ME 17 4AL
Tel : 01622 745333 email
copyright all rights reserved

News Categories : LED lights
LED lighting Slim lighting
Architectural lights