| 摘要 |
FIELD: physics. ^ SUBSTANCE: illuminator has a primary radiation source, a heat-removing base, a radiation converter and a reflector. The primary radiation source consists of one or more light-emitting diodes. Said light-emitting diodes are mounted on the surface of heat-removing base. The converter is in form of a layer of conversion material which converts primary radiation incident on its surface from light-emitting diodes into secondary radiation. The surface of the reflector reflects radiation incident on it. The radiation converter lies between the source of primary radiation and the reflector near said surface of the reflector. The reflector and converter lie at a distance from the primary radiation source. The heat-removing base has a hole for outlet of radiation. Said surface of the converter, which is illuminated with light-emitting diodes, and the surface of the reflector have a concave shape whose concave side face said hole and light-emitting diodes. The light-emitting diodes lie near the perimetre of the hole. ^ EFFECT: ensuring maximum efficiency of the light-emitting diode source of white light with a remote converter, ensuring high colour uniformity and rendering, as well as a wide angular solution of the emitted light flux with small shape factor of the illuminator. ^ 11 cl, 12 dwg |
