| 摘要 |
Disclosed is an efficient integrated LED photoelectric engine module, comprising a heat-radiator (1), a front cover (2), and a reflection cup (4). The heat-radiator (1) is provided with an inwardly recessed accommodation region (11), and a COB area light source (6) is fixed at the centre of the accommodation region (11) by means of a gland (5). A lens (7) covers the surface of the gland (5) corresponding to the COB area light source (6), and the lens (7) is fixed to the gland (5) by means of a spacing ring (41) on a bottom of the reflection cup (4). The lens (7) comprises a hemispherical base portion (71) and a cylindrical top cap portion (72), the base portion (71) being provided at the centre with a light-transmitting round hole (73), the top cap portion (72) being provided at the centre with an inverted cone-shaped countersink (74), and the countersink (74) being covered with a light reflecting layer (76) by electroplating. The lens (7) has a two-layer structure, and the light-transmitting round hole (73) and inverted cone-shaped countersink (74) provided thereon form a secondary optical structure, so that a point light source can be converted into an area light source, and after multiple reflections and refractions, the emergent light from the LED lens (7) is uniform and free of glare. |
