| 摘要 |
FIELD: physics.SUBSTANCE: LED lamp comprises a LED module made either in the form of a COB (chip-on-board) module, comprising compound-sealed LED chips mounted on a printed-circuit board and having electrical connection with the printed-circuit board, or in the form of a printed-circuit board having surface-mounted lumped LEDs, having electrical connection with the printed-circuit board. The LED module is placed over a heatsink, inside of which there is a voltage converter, electrically connected to the LED module and the lamp base. The optical system of the LED module is based on a truncated toric lens matrix attached to the printed-circuit board and having an undercut in which a compound-sealed LED chip or lumped LEDs are placed. The lens matrix can have additional structurally integrated optical elements in the form of a light-refracting sector of the lower part of the toric lens, as well as in the form of an element in the undercut region, which provides total internal reflection of incident lateral LED radiation. The material of the lens matrix can contain a light-scattering material (dispersant). The design of the LED lamp enables to generate a wide-angle beam pattern.EFFECT: improved optical characteristics and high efficiency of illumination owing to creation of an optimum heat removal system and improved protection from negative environmental factors.21 cl, 12 dwg |
