Väntrum och ångest har en stark koppling med varandra. Majoriteten av Sveriges befolkning besöker ett väntrum som patient minst en gång per år. I dagsläget planeras belysningen i första hand för vårdpersonalens behov och förutsättningar. På grund av detta blir ljusmiljön och väntrumsupplevelsen för patienter kan bli lidande. För att kunna skapa tillfredställande väntrumsmiljöer undersöktes det om det finns någon koppling mellan ångest och ljusnivå. I studien undersöktes även ljusupplevelsen och inverkan av fönster med utsikt på patienters ångest.  Studien undersökte påverkan av låg och hög belysningsstyrka samt påverkan av fönster på ångest. Dessutom undersöktes hur olika rumsutformning och belysningslösning påverkar upplevelsen av ljusmiljön och miljöns inverkan på måendet. Med hjälp av en förstudie kunde ett experiment utformas där fyra olika ljusscener testades. För att undersöka om fönster och utsikt har en påverkan, har två typrum skapats: ett med fönster och ett utan fönster.  Deltagarna i studien bestod av 16 kvinnor och 8 män med en blandning av studenter och yrkesverksamma som fick svara på 5 enkäter. Enkäter utvecklades från väl validerade metoder för att få svar från deltagarna angående hur de har mått de senaste två veckorna. Även hur deltagarna kände och upplevde ljusscenerna under experimentet, detta för att kunna besvara studiens frågeställningar.  Resultatet visade inga signifikanta skillnader gällande belysningsstyrkans eller fönsters påverkan på ångest. Men resultatet visade också att det fanns signifikanta skillnader i ljusupplevelsen när det kommer till ljushet, trygghet, ljusfärg samt bländning. Slutsatsen av studien är att belysningen kan påverka ljusupplevelsen och måendet. Men mer forskning behövs när det kommer till belysningsstyrkans samt fönster och utsikts påverkan på ångest. / Waiting rooms and anxiety have a strong connection with each other. Most of the Sweden's population visit a waiting room as patient at least once a year. At present, the lighting is primarily planned for the health professionals´ needs and conditions. Because of this, the lighting environment and the waiting room experience for patients suffers. To be able to create satisfying waiting room environments, this study wants to examine whether there is a connection between anxiety and light level. Also, it studies how the light will be experienced and if windows with views affects patient’s anxiety.  The study examined the influence of low and high illuminance and the influence of windows on anxiety. In addition, it was investigated how different room shapes and lighting solution affect the experience of the light environment and the environmental impact on the mood. With the help of a prestudy, an experiment could be designed where four different light scenes were tested. To investigate whether windows and views have an impact, two types of test rooms have been created: one with windows and one without windows. The participants in the study consisted of 16 women and 8 men with a mixture of students and professionals who had to answer 5 questionnaires. The questionnaires were developed from well-validated methods to get answers from the participants regarding how they have felt the last two weeks. Also, how the participants felt and experienced the light scenes during the experiment, in order to be able to answer the questions of the study.  The result showed no significant differences regarding the effect of illuminance or window on anxiety. The result showed however that there were significant differences in the light experience when it comes to brightness, safety, colour of the light and glare. The conclusion of the study is that the lighting can affect the light experience and the mood. But more research is needed when it comes to illuminance and windows and views impact on anxiety.

An analysis of existing showrooms showed that absence of atmosphere makes it hard for clients to imagine effects in a context, and that lack of guidance by the light makes the experience of the showroom overwhelming or static. Also, clients often prioritize luminaires' design over light effect, even in architectural lighting where design should be negligible. This thesis investigates whether it is possible by prioritizing light effect, to optimize the showroom experience and to direct clients' focus on the light, while minimizing the influence of design on the impression and eventually choice of luminaire. In order to achieve these goals, three main concepts are suggested – guiding light, contrasting atmospheres and sequence of presenting light effects first and luminaires afterwards. These enable good communication about light which is essential for clients to focus on the atmosphere created by the light, rather than price and design. Experiments were conducted in the basement of a Croatian company's office, where the exhibits were not the luminaires, but their light. Visitors' priorities before and after going through the installation changed significantly, which might mean that the light effect made an impact and influenced examinees to base their choice of luminaire more on light effect, than design. It is concluded that the used concepts contributed to putting more focus on the light itself. Instead of focusing solely on light experience or product, a balance between the two was achieved by prioritizing and showing the light effect first, and only afterwards joining it with the product, thus offering visitors a more complete experience of the luminaire.