STATIONARY SOLAR RADIATION CONCENTRATOR Russian patent published in 2020 - IPC F24S23/30 F24S23/70 F21V8/00 

FIELD: power engineering.

SUBSTANCE: invention relates to solar power engineering and to the field of household lighting and heating devices, and namely to devices for lighting and heating of cold and damp rooms with low temperature and low natural illumination: basements, corridors, vestibules, bathrooms and bathrooms, mines, underground car parks and garages, metro stations, and so forth. Stationary solar radiation concentrator comprises a converging radial Fresnel lens and a receiving gradient focus. In the concentrator in front of the focus of the narrowing lens there is a guiding bent in the form of a hemisphere reflector, on the inner surface of which there are reflecting annular micro prisms, and the input end of the gradient focon has the shape of a convex microlens and is located in the focus of the entire optical system, between the Fresnel lens and the reflector. Fixed solar radiation concentrator is based on successive narrowing and direction of light flux on the focon at first with a narrowing Fresnel lens, and then expanding reflector bent in the form of a hemisphere, with application on its surface of circular fragments conjugated prisms with a triangular cross-section. Final narrowing of the light flux is performed by a gradient focon which is located in the focus of the entire optical system. Reflector performs two functions simultaneously - expands the convergent light flux and directs this narrow flow to the input end of the gradient focon, which smoothly changes into the optical fiber, through which light is transported to the illuminated room.

EFFECT: such design makes it possible to create a flat sealed concentrator, with a minimum number of parts, which, without using mechanical servo systems, performs optical guidance to the Sun.

1 cl, 3 dwg