LED lamp bead internal edge light absorption type source light control high light efficiency illumination control method

By setting a coaxial closed-loop light-absorbing unit at the light source of the LED chip, stray light is directly absorbed, solving the problem of stray light being difficult to eliminate in LED lighting, achieving high luminous efficiency and high purity lighting effects, simplifying the optical structure and reducing costs.

CN122161242APending Publication Date: 2026-06-05CENTRAL CORE LIGHTING TECHNOLOGY (GUANGDONG) CO LTD
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Patent Information

Application Number
CN202610473822.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-11
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In existing LED lighting technologies, stray light generated at the edge of the chip is difficult to eliminate effectively, leading to problems such as glare, ghosting, and blurry edges. Furthermore, traditional light control modes are complex, costly, and have low luminous efficiency, making it difficult to achieve a comprehensive improvement in both luminous efficiency and purity.

Method used

A coaxial closed-loop edge light-absorbing unit is set at the light source of the LED chip to directly absorb stray light, prevent stray light from entering the main optical path, simplify the optical structure, reduce light efficiency loss, and achieve high-precision, coaxial optical path purification.

Benefits of technology

Significantly reduces stray light interference, improves luminous efficacy by 5%–15%, increases illuminance by 10%–40%, and provides excellent light spot quality. It is suitable for various lighting scenarios, reducing costs and assembly complexity.

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Abstract

The invention discloses an LED lamp bead internal edge light absorption type source light control high-luminous-efficiency illumination control method, belongs to the technical field of LED optics, and is particularly suitable for LED lamp beads. Aiming at the traditional technical prejudice of'first pollution and then treatment 'in the industry, a coaxial continuous closed edge light absorption unit is directly arranged at the edge of a light-emitting surface of an LED chip, only stray light at the edge of the chip is absorbed, and a central main light path is not shielded; the light absorption units are tightly attached to the chip, the distance is smaller than or equal to 0.005 mm, the coaxiality error is smaller than or equal to 0.05 mm, the shading rate is larger than or equal to 95%, and stray light interference is directly eliminated at a light emitting source. The LED lamp bead subverts a traditional later correction idea, and compared with a traditional LED lamp bead with the same specification and without a light absorption unit, the LED lamp bead has the advantages that the light spot purity is remarkably improved, the lighting effect is remarkably improved by 5%-15%, the center illumination is remarkably improved by 10%-40%, glare is reduced, the structure is simple, the universality is high, and the LED lamp bead is suitable for various high-light-quality lighting lamps.
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