An external diffuse light source structure

By designing an external diffuse light source structure and using a combination of diffuse reflection reflective surface and thermally conductive adhesive, the problem of uneven lighting on the annular concave bright surface was solved, achieving uniform lighting and effective detection, and extending the service life of the equipment.

CN224498307UActive Publication Date: 2026-07-14YUYAO LISHUAI MASCH VISION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YUYAO LISHUAI MASCH VISION TECH CO LTD
Filing Date
2025-09-28
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In existing technologies, when ordinary ring light sources illuminate a concave, bright surface, the uniformity is poor, obvious bright spots are easily produced, the effective detection area is small, and it is difficult to avoid missing defects.

Method used

Design an external diffuse light source structure, using a cylindrical frame and reflectors. The outer peripheral wall of the reflectors is provided with a diffuse reflective surface. The light source component includes a circular cylindrical LED array. The light source light is reflected after shining on the diffuse reflective surface. Combined with thermally conductive adhesive and a light-transmitting cover, uniform lighting and heat dissipation are achieved.

Benefits of technology

It achieves uniform illumination of the annular concave glossy surface, expands the detection range, avoids missing defects, and prevents the light source from overheating by using thermally conductive adhesive, thus extending the service life of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides an external diffuse light source structure, which comprises a cylindrical frame, a mounting cavity is formed in the cylindrical frame, a light source assembly is arranged in the mounting cavity, the light source assembly comprises a circular cylindrical LED array, the circular cylindrical LED array is mounted along an annular inner wall of the cylindrical frame, a light-reflecting piece coaxial with the cylindrical frame is arranged in the mounting cavity, a diffuse reflection light-reflecting surface is arranged on the outer peripheral wall of the light-reflecting piece, the diameter of the light-reflecting piece gradually decreases from the bottom wall of the mounting cavity to the direction of the light-emitting surface, and the light emitted by the light source assembly is reflected after irradiating on the diffuse reflection light-reflecting surface. The outer peripheral wall of the light-reflecting piece is arranged as a diffuse reflection light-reflecting surface, the diffuse reflection surface is uniformly projected, the annular concave light surface can be uniformly lighted, and light sources with different angles can be customized according to the concave angle of the measured object and the lightening requirement.
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