Vertical integration will scupper compatibility

Dear Sir,

I can see the appeal of vertical integration for large manufacturers. Not only do they get the order for the whole job, it reduces costs and technical development can be co-ordinated a lot more easily. There might even be some bene t to the user inasmuch as if anything goes wrong, there is just one manufacturer to call.

However, we all know that real savings in energy will only come from intelligent switching and dimming by using technologies such as daylight controls, movement sensors and illuminance detectors.

My worry is that the vertically integrated manufacturers will have no incentive to make their control systems compatible with others. A facilities manager might want a particular control system for the lighting so it can be integrated with the building management system. Similarly, the designer might want a particular driver or ballast for its technical characteristics or build quality.

Vertical integration will make life dif cult for small and medium sized manufacturers because their equipment will need to integrate with proprietary systems.

Do we really want every single piece of lighting equipment in a building to be supplied by just one manufacturer?

Alan Tulla
Alan Tulla Lighting

Tulips or people?

Dear Editor,
I just flew into Amsterdam airport at 5am and noticed an amazing number of small, bright sodium light patches on the clouds at relatively low level. It struck me that these are above the fields of poly-tunnels where flowers are grown. Apart from the light pollution aspect, is this really a sensible use of energy?

Light for every age

Dear Editor,
One of the few good things to emerge from the new Con-Dem government in recent weeks is the announcement that it intends to ban compulsory retirement at 60 or 65. As an ‘oldie’ already in this category, I welcome this – even though I can’t sack myself. But has anyone really come to terms with the implications for office lighting design of this move, which will inevitably push up the average age of our already ageing workforce?