One impression I often have in the theatre is that the atmosphere above the stage can look less than beautiful, even when the floor is carefully composed. The set, performers, and stage floor may be clearly shaped, while the air remains cluttered with separate beams and competing angles. Point light sources such as Fresnels and profiles are highly effective when precision is needed, but they do not always produce a coherent atmospheric image when used to fill space.
This is where linear lighting offers a different scenographic value. Scenographer Josef Svoboda’s use of linear light remains instructive because it shows that atmosphere can be structured as deliberately as floor light or scenic composition. (One example, "I vespri siciliani" in Opéra Garnier of Paris, 1974) A continuous source does not assert itself in the same way as multiple visible point sources. It is less likely to break the space into fragments. Instead, it can settle into the scenery and allow the whole environment to read as a more unified image.
Older strip lights already pointed in this direction, but their use was often limited by a lack of flexibility. They could provide continuity, but not always the level of control needed in more complex stage environments. That limitation began to ease with the arrival of intelligent strip lights such as the GLP Impression X4 Bar. These intelligent fixtures preserved the inherent continuity of the strip light while giving designers much greater control over focus through zoom, making continuous light in space far more usable, rather than producing a better strip light. The change affects both the light source type and its spatial distribution. A row of point sources creates distinct beams and gaps in haze, whereas a linear light source produces a more continuous, unbroken layer.
This approach also plays out on stage, where continuous linear light is used with clear scenographic intention. In Tobias Rylander’s work for The 1975, it helped define the roof and walls of the environment so that light functioned as part of the architecture itself.
In theatre, An Inspector Calls shows a related use, where linear light revealed falling rain while keeping the floor free from spill. In both cases, the priority shifts from basic illumination to spatial organization, ensuring the atmosphere functions as a deliberate scenic element.
In practice, this difference becomes especially clear in scenes that depend on a calm and coherent atmosphere. Imagine a peaceful town scene. If the back light is built with several profile fixtures and additional specials for props are placed unevenly across the overhead grid, the air above the stage is likely to become visually congested. Even if the floor looks fine and well organized, the air may appear fragmented with separate beams and overlapping angles competing for attention. If the same scene is lit with strip lights filling the back light position more completely, and with linear light sources in the toplight position for the props, the targets can still be picked out clearly while the air reads in a much more organized way. The air becomes less cluttered and more continuous, allowing it to support the scenic image rather than interrupt it.
Neither approach is inherently superior. Point light sources remain essential when the design depends on precision, separation, and directional emphasis. But when the aim is to create atmosphere as a coherent part of the scene, linear light offers a different way of organizing space, shaping how the air itself is seen.
Jason Ahn is a lighting designer and associate designer based in London, began his career at Woodroffe Bassett Design and has worked at some of the UK's most iconic venues, including the National Theatre and Barbican Centre, and in theatres in the West End. He trained at Rose Bruford College and Seoul Institute of the Arts.
Ahn's work in lighting design and the arts is informed by his research in neuroesthetics [neuroaesthetics in the UK] which explores how the brain recognizes, processes, and responds to artistic experiences. This theory is presented in his book, Neuroaesthetic Stage Lighting Design: What Makes Good Light, published by Routledge in 2025. Jason Ahn [email protected]
Photo credit: Stage with linear light (Generated by Nano Banana AI)