The design and development of Karizma Luce lighting fixtures
How we approach lighting product development
At Karizma Luce, we treat luminaire development as a structured and collaborative process. It involves deliberate steps across multiple disciplines — optical, mechanical, electronic, and thermal. From concept to final product, each phase aims to deliver performance, reliability, and visual clarity.
From concept to beam control — industrial and optical design
We begin with industrial design. This phase defines the geometry, ceiling integration, and how the luminaire should behave in architectural space. Every visual decision supports technical intent. At the same time, we explore the optical design. We select reflector or lens systems depending on the desired beam shape and application. Beam angles, cut-off control, and glare management are all defined at this stage to ensure comfort and precision.
Thermal, electronic and mechanical design
After the optical path is defined, we evaluate heat transfer through thermal design. Using simulation, we predict how the fixture cools over time and adjust volume and material accordingly. This keeps stable performance throughout the product’s lifespan. Alongside this, we handle the electronic design. We choose LED modules and drivers based on output, efficiency, dimming compatibility, and lifetime expectations. All parts are then integrated during the mechanical design process, which defines the internal structure, fixing points, tolerances, and wiring.
Testing performance through prototyping
Once digital design files are ready, we move into prototyping. We create early units using CNC machining and 3D printing. These allow us to test optics, cooling, handling, and ease of installation. For Dea Fauna S duo — a rectangular surface-mounted luminaire with two adjustable heads — mechanical testing was especially important. We assessed how the total fixture weight interacts with the magnetic mounting system. We checked the movement of each head and how the hinges behave over time. Every adjustment had to feel precise and hold its position without effort.
Tooling, documentation, and compliance
After confirming performance, we prepare the tooling design for die-cast, extruded, or machined parts, depending on the specific project requirements. Once we produce the first tooling samples, we evaluate surface finish, tolerances, and mechanical fit. Next comes the pre-production batch, which allows us to finalise all technical documentation. At this point, we also complete all necessary materials, including internal assembly manuals for production, installation manuals, technical datasheets, and .ldt files for simulation tools such as DIALux or RELUX.
At this point, we also handle CE declarations and relevant certifications, whether in-house or through external testing laboratories. That way, each luminaire meets market-specific requirements with confidence.
Sustainable packaging and careful release
Even the packaging we design with intention, using sustainable, recyclable materials where possible and minimising unnecessary volume. The goal is to protect the product during transport while minimising the footprint, but not to overdesign it. Because what matters is inside.
When the product is ready, tested, certified, documented, and aligned across all components, it moves into serial production. Only then does it join our portfolio and become available to you.
Dea Fauna S duo, like all Karizma Luce luminaires, is designed and assembled in the Netherlands. We take that responsibility seriously. Nothing is rushed. Every decision is intentional. With the aim of giving you the highest quality and reliable luminaire made by Karizma Luce.
If you’d like to know more about how we work, visit our Our Home or Our Story pages.
