068
AUDITORIUM LIGHTING / SHELDONIAN THEATRE, OXFORD, UK
Carefully located, linear fluorescent luminaires by Optelma utilise an asymmetric optic. Concealed within the window sills, these cannot be seen from normal viewing positions and provide wonderful washes of light to the window reveals and vaulted ceilings in the Upper and Lower Galleries. This allows users to enjoy the volume of the space as originally intended. The lighting mimics daylight and throws light across the painted ceiling so that it can be appreciated at night. The effect is captivating and has greatly improved the building’s street presence and public perception, with passers-by stopping to take photographs. Located at the balcony edge of the Upper Gallery, a Concord three-circuit track system has been introduced. This provides a flexible lighting system to accommodate various types of spotlight. Large dimmable 300W tungsten halogen Ivela 7 spotlights are employed specifically for the performances these can be removed as and when required. The Evolution control system by Mode Lighting features simple scene setting. Working with the Custodian of the Sheldonian, various scenes for performances were agreed. This gives the theatre staff more control and ensures each event has an appropriate ambience. In terms of maintenance the new scheme represents a significant improvement.
Fluorescent luminaires are used predominantly instead of GLS lamps, with tungsten now only used for a few hours in the evening when performances are scheduled. The new design has also resulted in an energy saving of 50 per cent - a total of 5.14kW compared to 10.38kW under the old scheme. This reduction in energy use has been achieved while also providing improved illuminance levels and a far better lit environment that, with its uncluttered design, is closer to how the Sheldonian would have appeared when first built. David Holt, Oxford University Estates Department, is delighted with the result: “Hoare Lea Lighting’s design complements Wren’s architecture beautifully and has helped to successfully restore the appearance of the Auditorium to Sir Christopher Wren’s original design by providing uninterrupted views around the space and of the ceiling paintings. The delicate lighting also enhances the external appearance of the building by subtly highlighting some of the external stone features and adding to the building’s street presence. Furthermore, the scheme is highly functional and its simple pre-programmed controls allow events to be lit easily, achieving numerous atmospheric effects.”
www.hoarelealighting.com
The Optelma window sill lighting throws light across the original painted ceiling (top) and improves the building’s street presence and captures the attention of passers-by (above).
PROJECT DETAILS
Sheldonian Theatre, Oxford, UK Client: Oxford University Estates Department Lighting Design: Hoare Lea Team: Simon Dove, Craig Perkins, Juan Ferrari
LIGHTING SPECIFIED
Optelma Quad 45/Quad 60/Quad 100 linear fluorescent, Concord TeQ Spotlight/Lytespan 3 three circuit track, Philip Payne Mini Cylinder emergency, Mode Lighting Evolution control system, Ivela 7 halogen spotlights (supplied by M & S Lighting)
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