LED (Light Emitting Diode) light source module

Abstract

An LED (Light Emitting Diode) light source module comprises a light guide film, an LED light source which is arranged facing the light guide film, an optical micro-structure which is formed in one side of the light guide film and a gel layer which is arranged on the optical micro-structure; the refractive index of the gel layer is smaller than the light guide film; a light emitting portion is further formed in the light guide film; light emitted from the LED light source enters the light guide film sequentially through the gel layer and the optical micro-structure and is separated from the light guide film from the light emitting portion. Compared with the prior art, light emitted from the LED light source enters the light guide film after being refracted through the gel layer, the refractive index of the gel layer is smaller than the light guide film, losses of light entering the light guide film are reduced, the light is uniformly scattered after entering the light guide film due to the fact that the gel layer is arranged on the optical micro-structure, the light leaves from the light guide film from the light emitting portion which is formed in the light guide film after being continuously reflected inside the light guide film, and accordingly the LED light source module is good in illumination effect and high in light utilization rate.

Description

Technical field [0001] The invention relates to the field of semiconductor lighting, in particular to a light-emitting diode light source module. Background technique [0002] Light Emitting Diode (LED) is an optoelectronic semiconductor element that can convert current into a specific wavelength range. Light-emitting diodes have the advantages of high brightness, low working voltage, low power consumption, easy matching with integrated circuits, simple driving, long life and other advantages, so they can be widely used as light sources in the lighting field. [0003] When light-emitting diodes are suitable for thin light source modules, they are usually used in conjunction with a light guide film (LGF). The light guide film is a transparent film with high refractive index and light transmittance, and its surface has different sparseness. Dense dot microstructure, so as to realize the conversion of point light sources into surface light sources. However, when the light emitted by...

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Problems solved by technology

However, when the light emitted by the light-emitting diode directly enters the light guide film, a certain amount of light loss will occur, resulting in a decrease in the light utilization rate of the light source module, and the concentrated light will cause uneven light output from the light source module as a whole, thereby affecting its lighting effects

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