Lighting encyclopaedia

Koľko lumenov potrebujete do obývačky, kuchyne či spálne? Pochopte rozdiel medzi lumenmi, luxmi a wattmi a vypočítajte orientačnú potrebu svetla podľa m².

CRI (Ra) describes how faithfully a light source renders colours compared to a reference. For demanding interiors, consider CRI 90+ and check R9 separately; this is design advice, not a universal standard requirement.

CRI describes average fidelity for test colours. We explain what Ra 80, 90 and 95+ can tell you and what needs checking separately on materials.

CCT in kelvins describes the colour appearance of white light. For a warmer atmosphere, consider 2700–3000 K or 2200 K; the overall impression also depends on intensity, materials and other lighting properties.

Neviete, či vybrať svetlo 2700 K, 3000 K alebo 4000 K? Praktické porovnanie farby svetla pre obývačku, kuchyňu, kúpeľňu, spálňu aj pracovňu.

The kitchen is the hardest room to light. Here are five mistakes we keep solving for clients — and how to avoid them at the design stage.

A bathroom is not a utility room. Vertical light at the mirror, IP-rated fittings in the shower zone and a warm scene at the bath define the premium experience.

A bedroom needs soft ambient, precise reading light and a Warm Dim evening mode. Downlights directly above the bed never belong.

A wardrobe is where outfit decisions happen. High CRI, vertical light and integrated linear strips in the shelves are the minimum.

Koľko luxov má mať kancelária? Prečo 500 lx nestačí — UGR, rovnomernosť, CRI, farebná teplota a Human Centric Lighting v praxi.

How to check the exact variant, control gear and DALI controls: a checklist before ordering, DT8(Tc), scene testing and consultation preparation.

DALI is not merely a „smart switch“. It is a digital bus that changes how a space responds to the time of day, to scenes and to the user.

Good dimming is more than a slider. Driver, curve and method together decide whether the light truly breathes or pulses.

The control platform affects comfort, support and expansion options. Each platform has its own functions and project requirements.

Biodynamic lighting mimics the daily course of natural light — in both intensity and spectrum. It is not just an automated warm-to-cool colour shift.

Combine lighting tasks and choose an exact variant: mounting, dimensions, light source, control and a practical datasheet checklist.

Review layering, CCT, drivers and scenes before electrical design. This is a design checklist, rather than a project statistic.

Koľko lumenov potrebujete do obývačky, kuchyne či spálne? Pochopte rozdiel medzi lumenmi, luxmi a wattmi a vypočítajte orientačnú potrebu svetla podľa m².

The kitchen is the hardest room to light. Here are five mistakes we keep solving for clients — and how to avoid them at the design stage.

UGR indicates discomfort glare under specific conditions. It depends on luminaires, room geometry, reflectances and observer position; it does not describe all aspects of visual comfort.