LED ring light source used for visual inspection lighting

Abstract

The invention discloses an LED ring light source used for visual inspection lighting, and belongs to the field of machine visual inspection. The LED ring light source comprises a shell, an outer ring light-emitting disc, a middle ring light-emitting disc and an inner ring light-emitting disc; the shell is a cylinder with an opening in the top face, and a through hole is formed in the bottom face of the shell; the inner ring light-emitting disc is installed on the bottom face of the shell; the lower edge of the outer ring light-emitting disc is connected with the edge of the outer side of the inner ring light-emitting disc; and the edge of the outer side of the middle ring light-emitting disc is connected with the outer ring light-emitting disc, the edge of the inner side of the middle ring light-emitting disc is connected with the inner ring light-emitting disc, and an included angle alpha is formed between the middle ring light-emitting disc and the inner ring light-emitting disc. The LED ring light source is matched with a lifting mechanism to be freely lifted, and the flexible low-angle lighting effect can be provided; red, green, blue and white LEDs are arranged according to a certain manner, three-ring eight-zone control is formed, color mixing is carried out more flexibly by adjusting the different-color LEDs in different zones, and meanwhile, the using scope of the light source is enlarged.

Description

Technical field [0001] The invention relates to a machine vision ring light source, in particular to an LED ring light source for visual inspection lighting. Background technique [0002] The core of the machine vision system is image acquisition and processing. All information comes from the image, and the quality of the image itself is extremely critical to the entire visual system. The light source is an important factor to ensure the image quality of the image machine vision system, which directly affects the quality of the input data and at least 30% of the application effect. Nowadays in the image size measurement industry, the ring light source uses a fixed number of angles for lighting, and cannot meet the demand for more delicate changes in the lighting angle according to different products under test. It is often designed for specific projects to achieve lighting with special light sources, which has low utilization rate. , Poor flexibility and other drawbacks, can no...

AI Technical Summary

Problems solved by technology

Nowadays, in the image size measurement industry, the ring light source uses fixed angles for lighting, and cannot meet the needs of providing more delicate changes in lighting angles according to different products under test. Often, special light sources are designed for specific projects to achieve lighting, and the utilization rate is low. , poor flexibility and other disadvantages, cannot meet today's increasingly higher requirements for intelligence, efficiency and precision

[0003] In addition, the light sources on the market are often monochromatic light sources or a simple combination of RGB colors, and for some products with complex colors, it is often necessary to change the lighting of different color temperatures to better highlight the contrast of the characteristic part of the image.

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