LED surface-mounted luminaire for walls or ceilings. Direct light distribution and indirect lighting corona or direct only light distribution. Tiered luminaire body made of aluminium profile with only 25mm visible frame. Surface natural anodised or white, graphite, black or champagne coated as well as polished aluminium. Further surface options see Lightnet-Surface-Collection or RAL of your choice. Microprismatic screen with optimized glare reduction especially for workplaces. Satin opal diffuser for general lighting with maximum transmittance and homogeneous lighting. Indirect light with innovative lens technology for wide-angle ceiling illumination. Driver integrated into luminaire housing, optionally switchable or dimmable (1-10V, DALI, Touch-Dim, Casambi). Colour temperature 2700K, 3000K, 3500K or 4000K. Binning initial ≤ MacAdam 3. Colour rendering CRI>80 or CRI>90. Sophisticated mounting system for easy installation and stable hold. On request: Integration of emergency lighting components, sensor technology.