Light source module, lighting system and lamp

Abstract

The light source module comprises a first light-emitting unit, a second light-emitting unit, a third light-emitting unit and a fourth light-emitting unit which are electrically independent of one another, the fourth light-emitting unit has a high Kmel value, and light emitted by the light-emitting units is mixed to form white light. The lighting system comprises the light source module and a driving circuit. The driving circuit can control the four light emitting units in the light source module in a distributed mode, so that the color temperature coverage range of white light obtained through light mixing is wide and ranges from 1600 K to 16000 K, and different Kmel values can be achieved under the same color temperature. By optimizing the light color of the monochromatic light-emitting unit, the white light color point distribution track of the light source module at each color temperature can be ensured to follow black body radiation rays, and the light source module has higher color rendering property and color reproducibility.

Description

technical field [0001] The invention relates to a light source module, a lighting system and a lamp. Background technique [0002] Human life is inseparable from lighting. The most basic element of lighting is the light source. Especially with the development of lighting technology, common lighting sources have already changed from early incandescent lamps and fluorescent lamps to LEDs, which are more widely used recently. People's pursuit of lighting quality has never stopped. In the past, lighting products paid more attention to indicators such as light color, illuminance, and color rendering. With the improvement of life quality, people pay more and more attention to the relationship between lighting and health. [0003] It is traditionally believed that there are two kinds of photoreceptor cells in the retina of our eyes, one kind of photoreceptor can distinguish light and dark, and the other can distinguish color. Scientists now believe that there is a third type of ph...

AI Technical Summary

Problems solved by technology

However, the disadvantage is that the distribution of the mixed light color point of the CIE 1931 chromaticity diagram is far from the existing color point standard (ANSI or ERP), which leads to a large color deviation of the lighting equipment, and its white light color is significantly different from the standard. difference

However, if it is necessary to improve the color tolerance level of lighting equipment, a technical solution can be adopted to reduce the relative color temperature gap between two kinds of white LEDs with different color temperatures, but this will lead to the problem of a narrower range of dimmable color adjustments.

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