Combined lens capable of mixing light evenly and adjusting light intensity angles and based on multiple colors of red green blue and white (RGBW)

Abstract

The invention discloses a combined lens capable of mixing light evenly and adjusting light intensity angles and based on multiple colors of red green blue and white (RGBW). The combined lens comprises a lamp body and a colorful light source arranged at the bottom of the lamp body. The lamp body comprises a condensing lens group and a dimming lens group. The distance between the condensing lens group and the dimming lens group is adjustable. The condensing lens group comprises a total internal reflection lens and an astigmatism compound eye array. The dimming lens group comprises a condensation compound eye array composed of a plurality of concave lenses and can conduct distributed and even processing on light from the total internal reflection lens. Due to the fact that the distance between the astigmatism compound eye array and the condensation compound eye array is adjustable, even light mixing of the light source is achieved, and by adjusting the distance between the astigmatism compound eye array and the condensation compound eye array, dimming from narrow angles to wide angles of a lamp is achieved. For a multi-lamp-bead RGBW light source, under the condition that each light-emitting diode (LED) lamp bead controls current independently, almost all colors of internal commission on illumination (CIE) color coordinates can be obtained after light is mixed.

Description

technical field [0001] The invention relates to a secondary LED lens applied to RGBW multi-color light mixing, in particular to an adjustable light intensity angle combination lens based on RGBW / RGB multi-color LED uniform light mixing. Background technique [0002] In LED packaging and lighting products, the lens changes and optimizes the LED light field distribution, enhances the use efficiency and luminous efficiency of light, and plays a vital role in improving lighting performance. LED lenses are divided into primary lenses and secondary lenses. The primary lens is directly encapsulated (or glued) on the LED chip holder, and becomes a whole with the LED. Generally use PMMA, PC, optical glass, silica gel and other materials. The secondary lens and LED are two independent objects, but they are inseparable in application. The secondary lens can refocus the light emitting angle of the LED light source into any desired angle between 5° and 160°. The distribution of the li...

AI Technical Summary

Problems solved by technology

However, for multi-bead RGBW light sources, uniform light mixing cannot be achieved

In addition, although the efficiency has been improved by setting a reflective cup with a large diameter, the structure takes up a lot of space, and it is still impossible to achieve uniform light mixing.

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