Color-switchable light source and preparation method thereof

Abstract

The invention discloses a color-switchable light source and a preparation method thereof. The color-switchable light source comprises a light source used for emitting light beams; and a light filtering device located on the propagation path of the light beams. The light source comprises a first color light source and a second color light source, the first color light source is used for emitting first color light, and the second color light source is used for emitting second color light. The light filtering device comprises a first light filtering area and a second light filtering area, the first light filtering area is used for the first color light to pass through, and the second light filtering area is used for the second color light to pass through. The first color light and the second color light are complementary color light. According to the color-switchable light source and the preparation method thereof provided by the invention, based on the complementary color principle, the first color light emitted by the color-switchable light source can only be emitted from the first light filtering area, and the second color light can only be emitted from the second light filtering area, so that the color-switchable light source with sharp boundary of the light-emitting area, uniform brightness and continuous light-emitting surface is realized.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of machine vision, and in particular to a color-switchable light source and a preparation method thereof. Background technique [0002] At present, in the technical fields such as machine vision industry and lighting, multi-region and multi-color switching light sources are often required. Although the existing light sources realize multiple regions to emit light of different colors individually, some current multi-color light sources have two disadvantages: 1. The boundary transition of each light-emitting area is blurred, that is, the brightness of the boundary part of each light-emitting area is continuously decreasing and uneven. Under this kind of lighting, the acquired pictures increase the difficulty of algorithm processing; 2. In order to make the boundary sharp, in Physical barriers are directly added to the boundaries of each light-emitting area to make the transition of e...

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Problems solved by technology

[0002] At present, in the technical fields such as machine vision industry and lighting, multi-region and multi-color switching light sources are often required. Although the existing light sources realize multiple regions to emit light of different colors individually, some current multi-color light sources have two disadvantages: 1. The boundary transition of each light-emitting area is blurred, that is, the brightness of the boundary part of each light-emitting area is continuously decreasing and uneven. Under this kind of lighting, the acquired picture increases the difficulty of algorithm processing; 2. In order to make the boundary sharp, in Physical barriers are directly added to the boundaries of each light-emitting area to make the transition of each light-emitting area sharp. However, because the physical barrier does not emit light, the boundaries of each area are discontinuous, resulting in no illumination in the corresponding transition areas between multiple light-emitting areas. Therefore Appears as black in the image, this situation will also lead to greatly reduced the effect of the captured picture

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