INJECTION NON-COHERENT LIGHT SOURCE Russian patent published in 1999 - IPC

FIELD: optoelectronic equipment, in particular, diode sources with high efficiency, power and brightness, narrow beam pattern to be used in information displaying devices, such as indicator lamps, cross lights, color displays, screen and projection TV sets, fiber-optical equipment for communication and information transmission, medical devices, pumping of solid-state lasers and amplifiers, white light emitting diodes instead of incandescent lamps and luminescent lamps. SUBSTANCE: device has heterogeneous structure which design involves respective content, height and number of layers and sub-layers, as well as design of light output, which is made from materials with given refraction indices and respective inclination angles of optical planes. This results in possibility to generate directed spontaneous light and to output it through output region. EFFECT: increased output efficiency, energy and light power of output light, increased range of output directions, more narrow beam pattern, facilitated use in multiple beam emitters, emission arrays and matrices, in particular, with autonomous control of each beam, simplified manufacturing. 37 cl, 22 dwg, 1 tbl