NOVELTY - A photovoltaic collector consists of a frame with axles serving for 1-axis tracking the photovoltaic collector after the sun motion; glazing of frame comprising an array of single-curvature lenses; flat heat sink comprising an upper plate (104) and lower plate which are sealed at their edges; and array of photovoltaic cells (623) which are installed on upper plate of flat heat sink in focal lines of single-curvature lenses. The lower plate is provided with an array of dimples directed inwards. Inner surfaces of upper and lower plates are covered with capillary coatings.    USE - A photovoltaic collector.    ADVANTAGE - The photovoltaic collector with refractive concentrators allow achieving further diminishment of proportion of solar cell cost in general cost of entire solar photovoltaic power system. The solar power system has high reliability, low cost of 1 kW of electrical power generated by the system, and low operating and maintenance expenditures.    DETAILED DESCRIPTION - A photovoltaic collector consists of:    (1) frame with axles serving for 1-axis tracking the photovoltaic collector after the sun motion;    (2) glazing of frame comprising an array of single-curvature lenses;    (3) flat heat sink which is functioning on the principle of a heat pipe and is installed in the frame, and comprising an upper plate (104) and lower plate which are sealed at their edges; where lower plate is provided with an array of dimples directed inwards, inner surfaces of upper and lower plates are covered with a capillary coatings, and internal space between upper and lower plates is filled with a liquid medium and its vapors; and    (4) array of photovoltaic cells (623) which are installed on upper plate of flat heat sink in focal lines of single-curvature lenses.    A mineral material is glass or asbestos cement.    DESCRIPTION OF DRAWING(S) - The drawing shows a top view of upper plate in the case of application of a glazing plate with single curvature Fresnel lenses.    Upper plate (104)    Mineral rigid sheet (621)    Opening (622)    Photovoltaic cell (623)    Metal sheet (624)