On 5 Apr, 10:37, JA wrote:
I notice that on the Screwfix website some of the mains voltage GU10
halogen lamps are described as having a "dichroic reflector". Does
anyone know what "dichroic reflector" means in this context? I had
assumed the term dichroic just applies to lamps with the GZ10 style cap
which direct any heat towards the back of the lamp, as opposed to lamps
with the GU10 style caps which direct any heat towards the front of the
lamp. Now seeing GU10 halogen lamps described as having a dichroic
reflector has confused me somewhat.

It must be a misprint , GZ lamps with the chamfered corners are
dichroic, GU lamps are aluminsed, fittings are designed one way or
other , best not to mix.

Cheers
Adam