Device for collecting solar energy

Device for gaining solar energy comprising reflection means with a reflector surface having at least one focal point, and comprising refraction means with an entry surface for entering sunlight and an exit surface facing the reflector surface of the reflection means, the refraction means being rotatably arranged around a first rotation axis, the reflection means being rotatably arranged around a second rotation axis, an entry area of said energy conversion means being provided at least near the at least one focal point of the reflector surface, and positioning means being provided for rotating the refraction means around the first rotation axis and for rotating the reflection means around the second rotation axis in dependence on a current position of the sun, characterized in that the reflection means, the refraction means, the positioning means and the conversion means extend from a integral unit with a common casing, the refraction means being rotatable around the first rotation axis with respect to a base part of the casing and provided with primary driving means capable of and set up to impose thereupon a rotation around the first axis with respect to the base part, the reflection means being arranged rotatably round the second rotation axis within the casing and provided with secondary driving means in order to impose thereupon a rotation around the second axis with respect to the base part, and in that the refraction means and the reflection means enclose an at least almost dustproof, though ventilating in terms of air and water vapour, closed off chamber between the exit surface of the refraction means and the reflector surface of the reflection means, the chamber comprising at least said entry area of said conversion means.