Focused solar energy collector

A solar energy collector comprising:

• an elongated solar energy converter,
• a base member on which the solar energy converter is mounted, and
• a domed fresnel lens with said lens including
• a hemispherical shell
• which is made from a transparent material, and
• is mounted on the base member over the solar energy converter
• with a diametrical line across the circular base of the shell being in register with the long axis of the solar energy converter, and
• fresnel lens prism elements on the inner surface of the shell which
• are each parallel to a plane which passes through the pole of the shell and the long axis of the solar energy converter and
• which are adapted to focus parallel ray solar radiation which passes through the shell on either side of the plane into a line focus on the solar energy converter irrespective of the position of the sun relatively to the lens shell while the sun is situated in the plane.