Transparent roof assembly for a vehicle roof

A transparent roof assembly for a vehicle roof, the roof assembly comprising

• a panel having a transparent area, the panel being configured to be arranged over an opening in the vehicle roof to allow visible light to pass in a first direction through the transparent area, the first direction extending between an interior of the vehicle and an exterior of the vehicle and substantially perpendicular to a surface of the panel;
• a light source arranged to provide light in the panel in a second direction, wherein the second direction is substantially perpendicular to the first direction;
• an out-coupling pattern arranged on the surface of the transparent area of the panel, the out-coupling pattern comprising dots of a light-redirecting material for out-coupling of light propagating in the panel, each dot having a dot surface area;
• wherein the dots each have a representative diameter of 150 microns or less, wherein the representative diameter of a dot corresponds to a diameter of a circle having a same surface area as the dot surface area of said dot;
• and
• wherein a total dot surface area of the dots of the out-coupling pattern equals a sum of the dot surface area of all dots arranged on the surface of the transparent area and wherein the total dot surface area is smaller than 10% of a total surface area of the transparent area.