High-brightness corner coaxial light source

Abstract

The invention relates to the technical field of visual imaging, and discloses a high-brightness corner coaxial light source which comprises a light-emitting assembly and a light-splitting lens. According to the high-brightness corner coaxial light source, vertical weak illumination is provided through transmission light of a light splitting part of the light-splitting lens, and strong supplementary lighting illumination is provided through a light-transmitting part, and continuous dead-angle-free illumination can be carried out on a detected object on an imaging surface, so that diffuse reflection light imaging is enhanced, mirror reflection light imaging is weakened, the halo phenomenon of a shot image is eliminated, stable shooting of surface details of the object is realized, and the angle change adaptability of the imaging surface relative to a light source is improved; the light-splitting lens is arranged to be of an entity-free light-transmitting part structure, so that the vertical space is further saved, the light path of light propagating among all parts is shortened, the light source irradiation effect is enhanced, and the use convenience and flexibility are improved; andilluminants are arranged into a plurality of rectangular annular illuminant groups of which the brightness is independently adjusted, so that the flexibility of adjusting the brightness area of the light-emitting component is enhanced.

Description

technical field [0001] The invention relates to the field of visual imaging technology, in particular to a high-brightness corner coaxial light source. Background technique [0002] The visual inspection system is a commonly used technology for automatic product inspection in the industry. It shoots the inspected object through lighting, camera devices, etc., and then analyzes the acquired image by software to obtain the barcode character of the inspected object. , cracks, packaging, surface layer, circuit welding and other defect information, these information is of great significance to the work of product sorting, technical improvement, etc., the use of visual inspection system can greatly improve the output and quality of products quality, and greatly save the cost of manual inspection. [0003] In the visual inspection system, visual imaging is performed first, and it is usually necessary to use a coaxial light source to supplement light on the inspected object to make...

AI Technical Summary

Problems solved by technology

[0005] 1. The space requirements in the vertical direction or corner direction of the object to be inspected are very large, and sufficient installation space is required, which will lead to a larger volume of the visual inspection system and a longer irradiation optical path;

[0006] 2. Lighting adopts a single spectroscopic reflection or spectroscopic transmission method, which will cause a serious decrease in the brightness of the light source and poor brightness uniformity within the irradiation range;

[0007] 3. Because of the large volume of the light source, it is not convenient to design a combined lighting mode with multiple angles and no dead angles. The angle of the irradiation light is small, and the adaptability to the angle change of the imaging surface is extremely poor;

[0008] 4. For the surface of the object to be photographed, the light source is irradiated vertically, resulting in too strong reflected light on the imaging surface, too weak diffuse reflected light, the image is prone to halo effect, and the surface details of the object are poorly reflected

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