LIGHT-EMITTING DIODE WITH OPTICAL ELEMENT Russian patent published in 2014 - IPC H01L33/58 

FIELD: physics, optics.

SUBSTANCE: invention relates to lighting engineering and specifically to LED-based semiconductor light sources. The LED has at least one light-emitting crystal with an ultra-narrow beam pattern, which is placed in a housing made of optically transparent material, the light-outputting surface of which is spherical, wherein the size of the sphere and the height of the optical element are linked by a certain relationship which depends on the angle of divergence of radiation flux of the LED, the height of the optical element, the radius of the sphere of the optical element, the angular dimension of the beam pattern of the light flux of the emitting crystal and the refraction index of the material of the optical element.

EFFECT: invention enables to make a LED which enables to form the required beam pattern of light flux.

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