NOVELTY - The collector panel comprises a collector cell array having collector cells (5) distanced from each other, and a paraboloid reflector array (3) of equally shaped and equally oriented paraboloid reflectors (4) arranged to reflect and concentrate radiation onto corresponding collector cells, where a focal point of the respective paraboloid reflectors is located on the corresponding collector cells. The collector panel further comprises a planar radiation permeable panel covering the collector cell array and the paraboloid reflector array, and first paraboloid reflector sub-arrays.    USE - The panel is useful for collecting energy (claimed), where the panel is a solar panel.    ADVANTAGE - The planar collector panel can be manufactured in a simple, an efficient and an economical manner.    DETAILED DESCRIPTION - The collector panel comprises a collector cell array having collector cells (5) distanced from each other, and a paraboloid reflector array (3) of equally shaped and equally oriented paraboloid reflectors (4) arranged to reflect and concentrate radiation onto corresponding collector cells, where a focal point of the respective paraboloid reflectors is located on the corresponding collector cells. The collector panel further comprises a planar radiation permeable panel covering the collector cell array and the paraboloid reflector array, first paraboloid reflector sub-arrays with first paraboloid reflectors in a first orientation, second paraboloid reflector sub-arrays with second paraboloid reflectors in a second orientation, first and second collector cell sub-arrays, and thermal and electrical networks (7, 6) mounted on a single frame. The paraboloid reflector array and the collector cell array are oriented so that a first virtual plane intersects the paraboloid reflectors and a second virtual plane intersects the collector cells. The first and second virtual planes are parallel to the planar radiation permeable panel. Each paraboloid reflector is defined by an off axis section of a paraboloid surface, and each section is defined by a rectangle projection onto the paraboloid surface, which has a projection direction parallel to a central axis of the paraboloid, at a distance equal to the height of the rectangle from the central axis. The collector cells comprise photovoltaic cells, and have a largest dimension of less than 15 mm. The paraboloid reflectors have a same orientation. The first and second paraboloid reflectors have inclined orientations with respect to each other, and the first and second collector cell sub-arrays are arranged near respective edges of the first and second paraboloid reflector sub-arrays. Each paraboloid reflector has a length and width of smaller than 20 cm. The paraboloid reflectors comprise polymer containing and paraboloid shaped material and a reflective coating over the polymer containing material. INDEPENDENT CLAIMS are included for:    (1) a method for collecting energy; and    (2) a radiation reflection panel for concentrating radiation onto collector cells.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic side view of a collector panel.    Paraboloid reflector array (3)    Paraboloid reflectors (4)    Collector cells (5)    Electrical network (6)    Thermal network. (7)