Luminaire for illuminating a surface

A luminaire for illuminating a surface with two beams of light, the luminaire comprising:

• a first chamber housing a first lighting arrangement for generating first light having first light characteristics, the first chamber comprising a first light output window for outputting the first light from the first chamber out of the luminaire in the form of a first light beam;
• a second chamber housing a second lighting arrangement for generating second light having second, different light characteristics;
• an elongate optical component configured to perform beamshaping on light provided to the elongate optical component;
• an elongate component holder configured to hold the elongate optical component and forming at least part of the bounds of the first chamber and at least part of the bounds of the second chamber, wherein the elongate component holder is configured to:
• prevent or restrict the passage of no less than 90% of the first light from the first chamber to the elongate optical component;
• and
• permit the passage of the second light from the second chamber to the elongate optical component;
• and
• a third chamber, at least partially bounded by the elongate optical component and configured to receive beamshaped second light from the elongate optical component, the third chamber comprising a second light output window for outputting the beamshaped second light from the third chamber out of the luminaire in the form of a second light beam,
• wherein the elongate component holder comprises a translucent or transparent portion that defines at least part of the bounds of the second chamber and is configured to permit the passage of light from the second chamber to the elongate optical component.