Phototherapy pavilion

The pavilion is a large-scale phototherapy device for the treatment and support of psychological states and stabilisation of circadian rhythms. It is a standalone cube-shaped structure with a side of approximately 2.5 metres, which can be placed in a hall, waiting room in a mental health centre or similar institution providing inpatient and outpatient care. Inside there is a space offering comfortable seating for up to 6 people.

The whole structure is designed as a pleasant modern solution using a combination of soft upholstered surfaces in light colours and natural wooden surfaces. The entire ceiling and half of one of the side walls are fitted with LED light sources with diffusers so that the entire area is illuminated and its low, balanced brightness creates the feeling of an open sky space. The two side walls of the pavilion are free, equipped with curtains, create a private space and, at the same time, promote an even distribution of light.

The effectiveness of the Spectrasol phototherapy pavilion is ensured by the combination of high luminance, uniquely effective spectral composition and multidirectional, uniform light distribution in space. For good acceptance of the therapy by the patient, visual comfort during phototherapy is ensured, which depends on the size of the illuminating surface, its location in the field of vision and the brightness ratios it creates.

The high therapeutic effectiveness is made possible by the use of the unique Spectrasol Therapeutic light spectral composition technology (protected by Patent No. 308363) with a high representation of wavelengths in the photosensitivity range of the ipRGC cells, which act on the circadian system. At the same time, the spectral distribution is favourable to users’ eyes by limiting harmful blue wavelengths below 450 nm and encompassing red wavelengths of around 670 nm.

Spectrasol’s unique spectral power distribution and key areas of emitted therapeutic light

Compared to commonly available phototherapy facilities, the pavilion offers a spatial solution with a large light source that covers more than 40% of the field of view. The dominant light flow is directed from above. The large emitting area allows for the light to be pleasantly diffused in the space without the glare of high brightness on the surface.
The power of the light source can be continuously regulated according to the therapy needs. The basic setting offers two levels. At higher power, the so-called therapeutic mode, the illuminated area reaches the average surface brightness of the summer sky. At lower power, in the so-called civil mode, the brightness of the area corresponds to the overcast sky. The achieved luminance converted to the melanopic photosensitivity of ipRGC cells (melanopic EDI) corresponds to the values required in the Czech and international phototherapy standards.

When applying the device, it is possible to use the detailed certified methodology of the National Institute of Mental Health of the Czech Republic, which is available here.

Technical data

* on the pupil of a seated person

The development and application methodology of the device were developed in cooperation with CTU UCEEB and the National Institute of Mental Health under project No. FW02020025 funded with the support of the Czech Technology Agency and the Ministry of Industry and Trade of the Czech Republic as part of the TREND programme