Ideal nonfocusing concentrator with fin absorbers in dielectric rhombuses

Two ideal concentrators with fin absorbers in dielectric rhombuses are described. Expressions for the design,height, and mirror length are derived. The devices have a concentration factor (n/sin OM) that is clearly higher than the traditional air-filled ideal concentrators. They do not require more mirrors or space and, when such easily available dielectrics as glass and water are used, offer useful configurations for purposes such as the collection of solar energy.