NOVELTY - The solar collector has a first reflective coating (301), which is applied to top inner surface (307) or bottom outer surface (305) of bottom trough-shaped structural element. A second reflective coating (302,303) is applied to top outer surface (308) or bottom inner surface (304) of a bulge in top plate. A photovoltaic cell or cells is positioned immediately outside gap in first reflective coating, such that the rays that forms concentrated beam of parallel rays pass through gap strike photovoltaic cell or cells.    USE - Solar collector constructed out of transparent material e.g., monolithic solar collector, used for residential, commercial, and industrial sites.    ADVANTAGE - Provides high light concentration factor which enables a significant cost savings for the photovoltaic cells used in a solar panel. Enables simple one-axis tracking of sun in order to keep the concentrated sunlight focused on photovoltaic cells. Achieves high levels of robustness and low maintenance costs. Applying the coatings to the outer surface is easier during manufacture. Reflective coating is protected from corrosion and degradation as in the case of glass mirrors. Optical quality is improved, manufacturing is simplified and cost is reduced. Solar collector is built of one solid continuous structure of transparent material. Eliminates reflections and refractions from the interior surfaces of transparent material. Reduces the loss of light flux due to any reflections that are not focused on the transparent gap in the concave mirror. Calculation of the positions and contours of the reflecting surfaces are simplified.    DESCRIPTION OF DRAWING(S) - The drawing shows the perspective view of solar collector, in which upper inner convex surface is constructed from a separate transparent member with a reflective coating applied to outer convex surface which is merged with a second transparent member containing the concave reflecting surface.    First reflective coating (301)    Second reflective coatings (302,303)    Bottom inner surface (304)    Bottom outer surface (305)    Top inner surface (307)    Top outer surface (308)