Light emitting diode light source module having uniform illumination

摘要

An LED light source module includes a base, an LED light source positioned on the base, an optical lens located on the light path of the LED light source and a diffusion plate positioned above the optical lens. An upper surface of the base is a light reflective surface. The optical lens defines a through hole aligned with the LED light source. A reflecting body is protruded from the diffusion plate toward the through hole of the optical lens. When the light emitted from the LED light source is projected to the reflecting surface of the light reflecting body through the through hole, the light is reflected by the reflecting surface to reach the upper surface of the base, and then is reflected by the upper surface of the base to reach the diffusion plate.

主权项

1. An LED (light emitting diode) light source module, comprising:
a base; an LED light source positioned on the base; an optical lens located at a light path of the LED light source; and a diffusion plate located above the optical lens; wherein an upper surface of the base is light reflective which reflects light impinging thereon, the optical lens defines a through hole aligned with the LED light source, a reflecting body is protruded from the diffusion plate toward the through hole of the optical lens, the reflecting body has a reflecting surface facing the through hole, light emitted from the LED light source and projected through the through hole is radiated to the reflecting surface of the reflecting body and is reflected thereby to reach the upper surface of the base, and then is reflected by the upper surface of the base to reach the diffusion plate.