Optics
Lens
An optical element for → directing light. The radius, the shape of the curvature, and the structure of the lens determine its optical behavior. In projection spotlights, lens…
GlossaryOptics
Filter
Optical elements with selective transmission. Filters only transmit part of the incident radiation, to produce either colored light or by filtering out invisible radiation such…
GlossaryOptics
Darklight technique
A special lighting technology in which the viewer is not dazzled by reflection of the light source as long as the lamp lies within the shielding area of the → reflector or lens.…
Glossary
Diffuser
Optical element for dispersing the rays of light in order to give a soft light beam. Fitted to the luminaire, the diffuser reduces the lamp luminance and can reduce glare.
GlossaryOptics
Anti-dazzle screen
Glossary
Honeycomb anti-dazzle screen
A shielding element with a hexagonal cell structure that uniformly limits light emission in all directions. Honeycombs reduce direct and reflected glare particularly effectively…
Glossary
Fibre optics
Optical instrument used to guide light along any route, even around curved paths. The light is channelled along the light guide system, a solid rod or tubular conductor made of…
GlossaryOptics
Projection
Projection is the transfer of an image by means of an optic onto a projection surface. In architectural lighting, the light from a point light source, usually an LED, is directed…
GlossaryOptics