Radiation collector and method of manufacture thereof

A non-imaging radiation collecting and concentrating device comprising:

• an entrance aperture for receiving incoming radiation, an exit aperture located opposite to said entrance aperture for outputting concentrated radiation, and one or more concaved reflectors arranged between said entrance and exit apertures, said one or more concaved reflectors defining an acceptance angle of the device relative to an optical axis thereof and configured such that optical focuses thereof are located between an edge of said exit aperture and said optical axis, thereby substantially preventing escape of the incoming radiation received in the entrance aperture within said acceptance angle and providing substantial uniform radiation collection at the exit aperture of the device;
• wherein a distance between the optical focus of each of the one or more concaved reflectors and an edge of the exit aperture is such that the radiation concentrated by said one or more concave reflectors is focused to the exit aperture without hitting another concaved reflector of the device;
• wherein the distance between the optical focus of each of the one or more concaved reflectors and the opposite edge of the exit aperture is about 0.05 to 0.27 of a dimension of the exit aperture.