“ETERNA” is a modular recessed lighting fixture designed for suspended ceilings. The philosophy of the design is to create an innovative, comfortable and healthy lighting fixture that offers endless creativity and sustainability for users. Eterna’s innovative form is beyond the limits of traditional two-dimensional modular lighting structures. It creates a new vision in modular lighting category with its three-dimensional organic form inspired from nature and brings a new dynamism, ambience and aestheic value in various architectural places. The design language explored in Eterna is the fusion of streaming surfaces as the reclining forms of deserts and waves. The main conceptual terms of the design are fluidity and continuity which best describe the appearence of Eterna. Its unique and innovative form enables it to be combined with each other in both axes endlessly. So, it enables the users to create fluid and continuous surfaces on ceilings with desired amounts and shapes. Also, Eterna is an environmentally friendly, energy efficent and sustainable lighting fixture with its innovative lighting technology. "Circadian Lighting System" is an innovative technology providing the most comfortable and healty light control in accordance with people biorhythm depending on the light intensity and color throughout the day. So, with the benefit of latest LED technology, totally homogeneous light distribution and natural light views are provided for users.