Abstract: A solar collector which is a deep chamber defined by side walls which are segments of mathematically definable curves, that are almost, but not quite, identical. A bottom wall is parabolic. The chamber will accept the rays of the sun from morning to evening and the annular space of the chamber will direct the rays at all times in a concentrated beam to a collection point where a transducer will convert the heat energy into a useful form.The collection point houses a transducer which is captured by separate segments of the side walls brought together and assembled into a unit with the transducer, thereby providing improved thermodynamic properties and facilitating the fabrication and erection of the device.