Iku recessed luminaires bring high-performance, ceiling-integrated lighting to environments subject to weather exposure or special architectural demands—such as covered entrance zones, transit underpasses, and outdoor passageways. Designed to blend seamlessly with other products in the extensive Iku family, these recessed downlights and wallwashers support lighting concepts that unify interior and exterior spaces with visual consistency. Their integrated form factor enables clean, architecturally precise installations, while the control gear, permanently connected via cable, simplifies the installation process. For advanced lighting control and connectivity, options like DALI and Casambi Bluetooth interfaces allow for flexible, digital integration. When equipped with Tunable White technology, Iku recessed luminaires support Human Centric Lighting (HCL) strategies that address the balance of activity, atmosphere, and architecture—the “three A’s”—equally and effectively. With their high visual comfort, they also reduce unnecessary emissions into the night-time environment, helping to mitigate light pollution.
Engineered for lighting flexibility and performance, Iku recessed luminaires offer four distinct light distributions tailored for a variety of outdoor and semi-enclosed architectural applications. Lens wallwashers deliver even, asymmetrical vertical illumination across building façades. Downlights with wide or extra-wide beams provide rotationally symmetrical general lighting, while oval flood distributions offer axially symmetrical light output ideal for corridors and linear traffic areas. These lighting patterns are foundational to ERCO’s AAA concept: enhancing the visibility of architecture, supporting user activity with adequate brightness, and shaping atmospheric experiences through carefully calibrated light.
The optical system at the core of Iku recessed luminaires ensures efficient and elegant light emission. Featuring precision Fresnel lenses made of optical polymer, these fixtures generate a uniformly bright light opening with exceptional visual comfort. Mid-power LEDs are used for downlight configurations, while high-power LEDs equip wallwashers, all available in warm white (3000K), neutral white (4000K), or tunable white (2700–6500K). A collimating lens further refines the downlight’s output for focused efficiency. Variants are available upon request, including LED options in 2700K, 3000K, 3500K, or 4000K with CRI 92, and wallwashers offering 3000K CRI 97 or other CRI 92 combinations.
Construction details reflect durability and precision. The cover ring is crafted from corrosion-resistant cast aluminum with a no-rinse surface treatment, double powder coating in silver, and paired with non-reflective safety glass. The anti-glare cone, available in silver-coated or black, can also be custom-finished in matte gold, silver, champagne, or copper upon request. The main housing is also powder-coated aluminum and designed for 2- or 3-point contact with screw fastening, supporting ceiling thicknesses from 1 to 30mm. Control gear options include switchable, DALI dimmable, and Casambi Bluetooth versions, allowing seamless integration into modern lighting networks.
Iku recessed downlights deliver up to 120lm/W, offering an economical lighting solution for both new builds and renovations. Their superior efficacy allows for wider luminaire spacing without compromising uniformity or brightness. For general ambient lighting, luminaires can be spaced up to 1.5 times their mounting height from the working plane. For linear applications, such as covered traffic routes, the same spacing rules apply to ensure continuous illumination along corridors or platforms. In wallwashing applications, luminaires should be mounted at a distance from the wall equal to one-third of the room height, with horizontal spacing up to 1.3 times the wall offset. This efficient spacing approach not only enhances light quality but also reduces installation density, power consumption, and associated costs.
Tunable white technology further expands the creative and functional range of Iku recessed luminaires. By dynamically adjusting color temperature from warm to cool tones, lighting schemes can adapt to seasonal conditions, time of day, or specific scenographic requirements. This makes Iku particularly suitable for environments where ambiance and wellbeing are key considerations, such as public transit areas, covered walkways, or semi-exterior lounges.
In line with ERCO’s commitment to sustainable and responsible lighting, Iku recessed fixtures utilize lens-based optics to sharply control light distribution. This reduces unwanted stray light and skyglow, helping to comply with ecological lighting guidelines such as “Dark Sky.” By focusing light only where needed, these luminaires minimize disruption to human circadian rhythms and wildlife while maximizing energy use efficiency.
Ultimately, Iku recessed luminaires combine aesthetic subtlety, optical precision, and robust engineering to deliver lighting solutions that are equally at home in demanding outdoor spaces and refined architectural environments. With advanced control interfaces, durable construction, and versatile light distributions, they form a key element in modern, efficient, and environmentally conscious lighting design.
https://www.erco.com/en/products/outdoor/recessed-luminaires/iku-8015/
