Unparalled Intelligent Optics Design for the Future

Posted Jun 25, 2020 by Repro-light Consortium

Bartenbach, an award winning lighting design and research consultancy, has announced the successful engineering of two unparalleled optic designs. Driven by the scope of the Repro-light project, “To successfully initiate transformation in the European LED lighting industry, by creating the ‘Luminaire of the Future’.” Bartenbach was tasked to deliver a novel optical system, and has now thus presented two new “LED Light Tile Optics (LLT)”.

The concept comprises a modular system allowing unlimited configuration, and light distributions within the fixture. At only 8.3mm thick the LLT can easily be integrated in the light exit plane of many fixtures. Through using total internal reflection, light emitted by the LED is dispersed evenly over the whole tile and precisely radiated following a desired light intensity distribution. Therefore, high luminance outside the radiation field and multi-shadowing are avoided.

The patented design of the reflectively coated micro-facets ensures targeted, even distribution of light. Each facet is therefore calculated individually for total optimized light control. Depending on the chosen design of the facets, almost any desired light distribution can be achieved without the need to change the visual appearance of the tile. This unique light point composition across the facets, creates a consistent luminous surface with no multi-shadowing and also with no color shadowing when using two different colored LEDs, since they are perfectly mixed within the tile.

All LLTs with varying light intensity distributions are designed for the same LED position and share the same outer dimensions. Therefore, the same fixture can be used in different applications, by simply replacing an LLT to give an alternative desired light distribution. Tiles with different distributions can be mixed within one luminaire, for example, to generate ambient light and task light from the same luminaire.

Specifically for the Repro-light project, two types of tiles were created: a special batwing-distribution for task light, avoiding reflective-glare, and a wall wash distribution to generate large area ambient light. The downlight with batwing distribution can be both symmetrical and asymmetrical, i.e. the left part of the luminaire shines to the right and vice versa. Additionally, as light is distributed from the right and left optics there is no reduction of light directly underneath. When utilized together they harmoniously accomplish the following: reduced reflective glare, color mixing, elimination of multi shadowing, and are fully flushed.

In terms of application there are no limits: office, general illumination, hospitality, gastronomy, residential, outdoor and also within the Personal Table Light, which is engineered and designed by Bartenbach. The variation possibilities are also endless: singlepoint, multipoint (linear/panels), single function, multifunction, recessed, semi recessed, surface mounted, suspended, freestanding and table mounted.