NOVELTY - A reflective-type concentrating photovoltaic (CPV) solar energy module comprises a light weight housing tray, anti-reflection protective glass cover, support frames (82), primary solar collectors each having a reflective surface, heat-spreaders, printed circuit board (PCB) mounted on top of heat-spreaders, solar cells (84) mounted on top of PCB and electrically connected using copper traces on PCB, and secondary reflectors each having a highly reflective surface, positioned on bottom side of anti-reflection glass to receive sunlight reflected from primary reflectors.    USE - A reflective-type concentrating photovoltaic solar energy module.    ADVANTAGE - The CPV module is simple; improves solar conversion efficiency; lowers initial costs; reduces overall cost of generating electricity per kilowatt-hour; comprises reflective sun concentrating unit(s) arranged in a construction that is highly modular, easily assembled and lower in initial cost; and has increased efficiency by reducing heat in solar cells. The top layer of PCB includes copper traces which provide low loss cell-to-cell electrical interconnection, thus eliminating the need for interconnect wires.    DETAILED DESCRIPTION - A reflective-type CPV solar energy module comprises:    (1) light weight housing tray;    (2) anti-reflection protective glass cover;    (3) support frames (82);    (4) primary solar collectors each having a reflective surface, mounted inside the housing and supported in position by frames to reflect sunlight incident on its reflective surface;    (5) heat-spreaders;    (6) PCB mounted on top of heat-spreaders;    (7) solar cells (84) mounted on top of PCB and electrically connected using copper traces on PCB; and    (8) secondary reflectors each having a highly reflective surface, positioned on bottom side of anti-reflection glass to receive sunlight reflected from primary reflectors and to reflect sunlight onto solar cells that convert solar energy to electricity.    The PCB has copper traces which provide low loss cell-to-cell electrical interconnections. The solar cells are attached to PCB using solder or epoxy. INDEPENDENT CLAIMS are included for:    (1) an efficient passive cooling system for CPV solar energy modules; and    (2) a Cassegrain type reflective optics system for concentrating solar energy.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a single solar cell and a top view of an 18-cell module with water cooling option.    Frame (82)    Fresnel lens (83)    Solar cell (84)    Secondary concentrator (85)    Sun ray (154)