Lens and lighting device
By using a symmetrical lens design, light is directed from the cylindrical sidewall to the light-emitting part through a reflector, solving the problem of uneven illumination on the light-emitting plate and achieving a better visual experience and a thinner lamp design.
CN117889404BActive Publication Date: 2026-07-24QINGDAO YEELINK INFORMATION TECH
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO YEELINK INFORMATION TECH
- Filing Date
- 2022-07-18
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
In existing technologies, direct-lit optical path systems with multiple light sources and lenses result in uneven illuminance on the light-emitting plate, leading to a poor visual experience for users, and the lamps are also relatively thick.
Method used
The lens with a symmetrical structure includes a lens body, a light-entry section, a light-exit section, and a reflective section. The reflective section directs light from the cylindrical sidewall to the light-exit section, achieving a redistribution and uniform distribution of light and reducing the illuminance value in the central area.
Benefits of technology
It improves the uniformity of illumination on the light-emitting plate, enhances the user's visual experience, and reduces the thickness of the lamp.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117889404B_ABST
Abstract
The application provides a lens and a lighting device, wherein the lens is of a symmetrical structure and has a central symmetry plane A0, and the lens comprises: a lens body; a light inlet portion arranged on a first surface of the lens body and comprising a mounting recess recessed to the inside of the lens body and accommodating a light source, the mounting recess comprising a bottom wall and a cylindrical side wall connected at the edge of the bottom wall; a light outlet portion arranged on a second surface of the lens, the second surface being parallel to the first surface, wherein the bottom wall comprises an outer ring portion and a central portion inside the outer ring portion, the outer ring portion is arranged protruding towards the direction of the light inlet portion, and the central portion is arranged protruding towards the direction of the light outlet portion; and a reflecting portion arranged on the side surface of the lens body and between the first surface and the second surface. The technical scheme of the application effectively solves the problem in the related art that the light path through the lens passes through the middle area of the light outlet plate centrally, so that the illumination on the light outlet plate is uneven.
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